Sample records for depth initial flow

  1. Steady periodic waves bifurcating for fixed-depth rotational flows

    E-Print Network [OSTI]

    consider steady periodic water waves for rotational flows with a specified fixed-depth over a flat bed. We the existence of steady periodic water waves for rotational flows with a specified fixed depth over a flat bedSteady periodic waves bifurcating for fixed-depth rotational flows David Henry School

  2. Fluctuating initial conditions and fluctuations in elliptic and triangular flow

    E-Print Network [OSTI]

    A. K. Chaudhuri

    2012-02-24T23:59:59.000Z

    In heavy ion collisions, event-by-event fluctuations in participating nucleon positions can lead to triangular flow. With fluctuating initial conditions, flow coefficients will also fluctuate. In a hydrodynamic model, we study the fluctuations in elliptic and triangular flow, due to fluctuating initial conditions. Both elliptic and triangular flow fluctuates strongly, triangular flow more strongly than the elliptic flow. Strong fluctuations greatly reduce the sensitivity of elliptic and triangular flow to viscosity.

  3. Quantitative Depth Recovery from Time-Varying Optical Flow in a Kalman Filter

    E-Print Network [OSTI]

    Barron, John

    Quantitative Depth Recovery from Time-Varying Optical Flow in a Kalman Filter Framework John Barron Julich, 52425 Julich, Germany h.spies@fz-juelich.de Abstract. We present a Kalman lter framework, Depth from Optical Flow, Kalman Filter, 3D Camera Motion, Quantitative Error Analysis 1 Introduction We

  4. Fluctuating initial conditions and fluctuations in elliptic and triangular flow

    E-Print Network [OSTI]

    Chaudhuri, A K

    2011-01-01T23:59:59.000Z

    In heavy ion collisions, event-by-event fluctuations in participating nucleon positions can lead to triangular flow. In a hydrodynamic model with fluctuating initial conditions, we study the fluctuations in elliptic and triangular flow. Both elliptic and triangular flow fluctuates strongly. Strong fluctuations greatly reduces the sensitivity of elliptic and triangular flow on viscosity.

  5. Heat Flow At Standard Depth | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are8COaBulkTransmissionSitingProcess.pdfGetec AG|Information OpenEIHas BeenLegalHeard County,Grain FuelsDepth Jump

  6. Letter Report: Borehole Flow and Horizontal Hydraulic Conductivity with Depth at Well ER-12-3

    SciTech Connect (OSTI)

    P. Oberlander; C. Russell

    2005-09-01T23:59:59.000Z

    Borehole flow and fluid temperature during pumping were measured at well ER-12-3 at the Nevada Test Site in Nye County, Nevada. This well was constructed to characterize the carbonate aquifer. The well is cased from land surface to the total depth at 1,487 m (4,880 ft) below ground surface (bgs). Slotted screen is placed in an upper screened section from 1,095 to 1,160 m bgs (3,591 to 3,805 ft bgs) and in the lower screened section from 1,278 to 1,474 m bgs (4,191 to 4,834 ft bgs). Borehole flow velocity (LT-1) with depth was measured with an impeller flowmeter from the top of the screened section to the maximum accessible depth while the well was pumped and under ambient conditions. A complicating factor to data interpretation is that the well was not filter packed and there is significant upward and downward vertical flow in the open annulus under ambient and pumping conditions. The open annulus and large vertical flow velocities in the well casing result in the measured borehole flow rates being potentially highly nonrepresentative of conditions in the aquifer. Hydraulic conductivities calculated under these conditions would require unsupportable assumptions and would be subject to very large uncertainties. Borehole hydraulic conductivities are not presented under these conditions.

  7. Letter Report: Borehole Flow and Horizontal Hydraulic Conductivity with Depth at Well ER-12-4

    SciTech Connect (OSTI)

    Phil L. Oberlander; Charles E. Russell

    2005-12-31T23:59:59.000Z

    Borehole flow and fluid temperature during pumping were measured at well ER-12-4 at the Nevada Test Site in Nye County, Nevada. This well was constructed to characterize the carbonate aquifer. The well is cased from land surface to the total depth at 1,132 m (3,713 ft bgs) below ground surface (bgs). The screened section of the well consists of alternating sections of slotted well screen and blank casing from 948 to 1,132 m bgs (3,111 to 3,713 ft bgs). Borehole flow velocity (LT-1) with depth was measured with an impeller flowmeter from the top of the screened section to the maximum accessible depth while the well was pumped and under ambient conditions. A complicating factor to data interpretation is that the well was not filter packed and there is upward and downward vertical flow in the open annulus under ambient and pumping conditions. The open annulus in the well casing likely causes the calculated borehole flow rates being highly nonrepresentative of inflow from the formation. Hydraulic conductivities calculated under these conditions would require unsupportable assumptions and would be subject to very large uncertainties. Borehole hydraulic conductivities are not presented under these conditions.

  8. Influence of shear viscosity on the correlation between the triangular flow and initial spatial triangularity

    E-Print Network [OSTI]

    A. K. Chaudhuri

    2011-12-06T23:59:59.000Z

    In a hydrodynamic model, with fluctuating initial conditions, the correlation between triangular flow and initial spatial triangularity is studied. The triangular flow, even in ideal fluid, is only weakly correlated with the initial triangularity. The correlation is largely reduced in viscous fluid. Elliptic flow on the other hand appears to be strongly correlated with initial eccentricity. Weak correlation between triangular flow and initial triangularity indicate that a part of triangular flow is unrelated to initial triangularity. Triangularity acquired during the fluid evolution also contributes to the triangular flow.

  9. Influence of shear viscosity on the correlation between the triangular flow and initial spatial triangularity

    E-Print Network [OSTI]

    Chaudhuri, A K

    2011-01-01T23:59:59.000Z

    In a hydrodynamic model, with fluctuating initial conditions, the correlation between triangular flow and initial spatial triangularity is studied. The triangular flow, even in ideal fluid, is only weakly correlated with the initial triangularity. The correlation is largely reduced in viscous fluid. Elliptic flow on the other hand appears to be strongly correlated with initial eccentricity. Weak correlation between triangular flow and initial triangularity indicate that a part of triangular flow is unrelated to initial triangularity. Triangularity acquired during the fluid evolution also contributes to the triangular flow.

  10. Numerical simulation of the flow over a coastal structure in depth-limited conditions

    E-Print Network [OSTI]

    Ginting, Victor Eralingga

    1998-01-01T23:59:59.000Z

    of detailed measurements of irregular wave transformation in front of the structure in depth-limited conditions. The second data set consists of several test runs to study the irregular wave reflection and runup on the coastal structure in depth...

  11. ICFT- An Initial Closed-Loop Flow Test of the Fenton Hill Phase...

    Open Energy Info (EERE)

    ICFT- An Initial Closed-Loop Flow Test of the Fenton Hill Phase II HDR Reservoir Jump to: navigation, search OpenEI Reference LibraryAdd to library Report: ICFT- An Initial...

  12. Organized Oscillations of Initially-Turbulent Flow Past a Cavity

    SciTech Connect (OSTI)

    J.C. Lin; D. Rockwell

    2002-09-17T23:59:59.000Z

    Flow past an open cavity is known to give rise to self-sustained oscillations in a wide variety of configurations, including slotted-wall, wind and water tunnels, slotted flumes, bellows-type pipe geometries, high-head gates and gate slots, aircraft components and internal piping systems. These cavity-type oscillations are the origin of coherent and broadband sources of noise and, if the structure is sufficiently flexible, flow-induced vibration as well. Moreover, depending upon the state of the cavity oscillation, substantial alterations of the mean drag may be induced. In the following, the state of knowledge of flow past cavities, based primarily on laminar inflow conditions, is described within a framework based on the flow physics. Then, the major unresolved issues for this class of flows will be delineated. Self-excited cavity oscillations have generic features, which are assessed in detail in the reviews of Rockwell and Naudascher, Rockwell, Howe and Rockwell. These features, which are illustrated in the schematic of Figure 1, are: (i) interaction of a vorticity concentration(s) with the downstream corner, (ii) upstream influence from this corner interaction to the sensitive region of the shear layer formed from the upstream corner of the cavity; (iii) conversion of the upstream influence arriving at this location to a fluctuation in the separating shear layer; and (iv) amplification of this fluctuation in the shear layer as it develops in the streamwise direction. In view of the fact that inflow shear-layer in the present investigation is fully turbulent, item (iv) is of particular interest. It is generally recognized, at least for laminar conditions at separation from the leading-corner of the cavity, that the disturbance growth in the shear layer can be described using concepts of linearized, inviscid stability theory, as shown by Rockwell, Sarohia, and Knisely and Rockwell. As demonstrated by Knisely and Rockwell, on the basis of experiments interpreted with the aid of linearized theory, not only the fundamental component of the shear layer instability may be present, but a number of additional, primarily lower frequency components can exist as well. In fact, the magnitude of these components can be of the same order as the fundamental component. These issues have not been addressed for the case of a fully-turbulent in-flow and its separation from the leading corner of the cavity.

  13. Effect of initial fluctuations on the collective flow in intermediate-energy heavy ion collisions

    E-Print Network [OSTI]

    Jia Wang; Yu-Gang Ma; Guo-Qiang Zhang; Wen-Qing Shen

    2014-11-07T23:59:59.000Z

    A systemical analysis of the initial fluctuation effect on the collective flows for Au+Au at 1$A$ GeV has been presented in the framework of Isospin-dependent Quantum Molecular Dynamics model (IQMD), and a special focus on the initial fluctuation effect on the squeeze-out is emphasized. The flows calculated by the participant plane reconstructedby the initial geometry in coordinate space are compared with those calculated by both the ideal reaction plane and event plane methods. It is found that initial fluctuation weakens squeeze-out effect, and somediscrepancies between the flows extracted by the above different plane methods appearwhich indicate that the flows are affected by the evolution of dynamics. In addition, we found that the squeeze-out flow is also proportional to initial eccentricity. Our calculations also qualitatively give the similar trend for the excitation function of the elliptic flow of the FOPI experimental data. Finally we address the nucleon number scaling of the flows for light particles. Even though initial fluctuation decreases the ratio of $v_4/v_2^2$ as well as $v_3/(v_1v_2$) a lot, all fragments to mass number 4 keep the same curve and shows independent of transverse momentum.

  14. Fluctuating initial condition and smoothening effect on elliptic and triangular flow

    E-Print Network [OSTI]

    Haque, Md Rihan; Chaudhuri, A K

    2012-01-01T23:59:59.000Z

    In heavy ion collisions, event-by-event fluctuations in participating nucleon positions can lead to triangular flow. Generally, one uses Monte-Carlo Glauber model to obtain the participating nucleon positions. To use in a hydrodynamic model, the positions needs to be smoothened. We study the effect of smoothening of Glauber Monte-Carlo initial conditions on elliptic and triangular flow. It is shown that integrated as well as differential elliptic and triangular flow remain largely unaltered, irrespective of functional form of the smoothening function, or the smoothening parameter

  15. Fluctuating initial condition and smoothening effect on elliptic and triangular flow

    E-Print Network [OSTI]

    Md. Rihan Haque; Victor Roy; A. K. Chaudhuri

    2012-04-13T23:59:59.000Z

    In heavy ion collisions, event-by-event fluctuations in participating nucleon positions can lead to triangular flow. Generally, one uses Monte-Carlo Glauber model to obtain the participating nucleon positions. To use in a hydrodynamic model, the positions needs to be smoothened. We study the effect of smoothening of Glauber Monte-Carlo initial conditions on elliptic and triangular flow. It is shown that integrated as well as differential elliptic and triangular flow remain largely unaltered, irrespective of functional form of the smoothening function, or the smoothening parameter

  16. Initial eccentricity and constituent quark number scaling of elliptic flow in ideal and viscous dynamics

    E-Print Network [OSTI]

    A. K. Chaudhuri

    2010-03-23T23:59:59.000Z

    In the Israel-Stewart's theory of dissipative hydrodynamics, we study the scaling properties elliptic flow in Au+Au collisions. Initial energy density of the fluid was fixed to reproduce STAR data on $\\phi$ meson multiplicity in 0-5% Au+Au collisions, such that irrespective of fluid viscosity, entropy at the freeze-out is similar in ideal or in viscous evolution. Initial eccentricity or constituent quark number scaling is only approximate in ideal or minimally viscous ($\\eta/s=1/4\\pi$) fluid. Eccentricity scaling become nearly exact in more viscous fluid ($\\eta/s \\geq$0.12). However, in more viscous fluid, constituent quark number scaled elliptic flow for mesons and baryons split into separate scaling functions. Simulated flows also do not exhibit 'universal scaling' i.e. elliptic flow scaled by the constituent quark number and charged particles $v_2$ is not a single function of transverse kinetic energy scaled by the quark number. From a study of violation of universal scaling, we obtain an estimate of QGP viscosity, $\\eta/s=0.12 \\pm 0.03$.

  17. Pair dispersion in a chaotic flow reveals the role of the memory of initial velocity

    E-Print Network [OSTI]

    Eldad Afik; Victor Steinberg

    2015-02-10T23:59:59.000Z

    The leading paradigm for chaotic flows dominated by dissipation predicts an exponential growth of the mean distance between pairs of fluid elements, in the long run. This is reflected in the analysis of experimental results on tracer particles and the discussions which follow, as reported in recent experimental and numerical publications. To quantitatively validate this prediction, we have conducted a microfluidic experiment generating elastic turbulence, a flow characterised in the literature as smooth in space and random in time. To our great surprise, we discovered that the pair separation follows a much slower power-law --- also known as ballistic --- a notion overlooked so far for flows of this type. We provide conclusive experimental evidence that this scaling is well-desribed by the same coefficients derived from the short-time dynamics. Our finding reinforces the role of the ballistic regime over a significant range in time and space, providing a quantitative estimation for the spreading of particles in mixing microfluidic flows based on the initial velocity snapshot. Finally we note that the conditions for the asymptotic exponential pair separation are quite stringent when it comes to tracer particles and are unlikely to be realised in wall-bounded flows. Therefore this work raises questions regarding the relevance and applicability of the currently leading paradigm.

  18. Thermalization, Isotropization and Elliptic Flow from Nonequilibrium Initial Conditions with a Saturation Scale

    E-Print Network [OSTI]

    Marco Ruggieri; Francesco Scardina; Salvatore Plumari; Vincenzo Greco

    2014-07-09T23:59:59.000Z

    In this article we report on our results about the computation of the elliptic flow of the quark-gluon-plasma produced in relativistic heavy ion collisions, simulating the expansion of the fireball by solving the relativistic Boltzmann equation for the parton distribution function tuned at a fixed shear viscosity to entropy density ratio $\\eta/s$. Our main goal is to put emphasis on the role of a saturation scale in the initial gluon spectrum, which makes the initial distribution far from a thermalized one. We find that the presence of the saturation scale reduces the efficiency in building-up the elliptic flow, even if the thermalization process is quite fast $\\tau_{therm} \\approx 0.8 \\,\\rm fm/c$ and the pressure isotropization even faster $\\tau_{isotr} \\approx 0.3 \\,\\rm fm/c$. The impact of the non-equilibrium implied by the saturation scale manifests for non-central collisions and can modify the estimate of the viscosity respect to the assumption of full thermalization in $p_T$-space. We find that the estimate of $\\eta/s$ is modified from $\\eta/s \\approx 2/4\\pi$ to $\\eta/s \\approx 1/4\\pi$ at RHIC and from $\\eta/s \\approx 3/4\\pi$ to $\\eta/s \\approx 2/4\\pi$ at LHC. We complete our investigation by a study of the thermalization and isotropization times of the fireball for different initial conditions and values of $\\eta/s$ showing how the latter affects both isotropization and thermalization. Lastly, we have seen that the range of values explored by the phase-space distribution function $f$ is such that at $p_T<0.5\\, \\rm GeV$ the inner part of the fireball stays with occupation number significantly larger than unity despite the fast longitudinal expansion, which might suggest the possibility of the formation of a transient Bose-Einstein Condensate.

  19. Development of Waste Acceptance Criteria at 221-U Building: Initial Flow and Transport Scoping Calculations

    SciTech Connect (OSTI)

    Freedman, Vicky L.; Zhang, Z. F.; Keller, Jason M.; Chen, Yousu

    2007-05-30T23:59:59.000Z

    This report documents numerical flow and transport simulations performed that establish initial waste acceptance criteria for the potential waste streams that may be safely sequestered in the 221-U Building and similar canyon structures. Specifically, simulations were executed to identify the maximum loading of contaminant mass (without respect to volume) that can be emplaced within the 221-U Building with no more than 1 pCi/m2 of contaminant migrating outside the structure within a 1,000 year time period. The initial scoping simulations were executed in one dimension to assess important processes, and then two dimensions to establish waste acceptance criteria. Two monolithic conditions were assessed: (1) a grouted canyon monolith; and (2) a canyon monolith filled with sand, both assuming no cracks or fissures were present to cause preferential transport. A three-staged approach was taken to account for different processes that may impact the amount of contaminant that can be safely sequestered in canyon structure. In the first stage, flow and transport simulations established waste acceptance criteria based on a linear (Kd) isotherm approach. In the second stage, impacts on thermal loading were examined and the differences in waste acceptance criteria quantified. In the third stage of modeling, precipitation/dissolution reactions were considered on the release and transport of the contaminants, and the subsequent impact on the maximum contaminant loading. The reactive transport modeling is considered a demonstration of the reactive transport capability, and shows the importance of its use for future performance predictions once site-specific data have been obtained.

  20. Mars outflow channels: A reappraisal of the estimation of water flow velocities from water depths, regional slopes, and channel floor

    E-Print Network [OSTI]

    Head III, James William

    of estimating water flow velocities in Martian outflow channels using equations based on the Darcy of the Manning equation should be replaced by the modern form or, preferably, by the Darcy-Weisbach equation channel systems on Mars have relied widely on various versions of the Manning equation. This has led

  1. Influence of initial conditions on turbulence and mixing in Richtmyer-Meshkov flows in presence of re-shock

    SciTech Connect (OSTI)

    Balasubramanian, Sridhar [Los Alamos National Laboratory; Prestridge, Katherine P [Los Alamos National Laboratory; Orlicz, Gregory C [Los Alamos National Laboratory; Balasubramaniam, Balakumar J [Los Alamos National Laboratory

    2010-11-15T23:59:59.000Z

    The study of influence of initial conditions [amplitude ({delta}) and wavelength ({lambda}) of perturbations] on variable-density flows stems from the the recent work done by Dimonte et at. 2004, Miles et al. 2005 and Balakumar et al. 2008a, where it was shown that both Richtmyer-Meshkov (R-M) and Rayleigh-Taylor (R-T) turbulent flows are not truly self similar and have a strong initial conditions dependence on turbulence transport and mixing. However, so far most of the work on this topic has been numerical studies which suggest that for multi-mode systems, the emergence of a regime of self-similar instability growth independent of the initial conditions does not occur. Experimental evidence is needed to verify this theory. Thus, the present work focuses on conducting an experimental study at moderate Mach number (Ma = 1.2) to understand the effects of multi-mode perturbations of the shocked interface on instability growth rate and mixing for R-M flows, which are important mechanisms in inertial confinement fusion reactions, supernovae, combustion and general fluid mixing processes. The ongoing 3-D numerical simulations using ILES will be used for validation of our experimental results. The experiments to study R-M turbulence and mixing are carreid out at the Los Alamos Gas Shock Tube facility shown in Figure I and described in detail in Balakumar et al. 2008b. A heavy gas curtain of SF{sub 6}, surrounded on both sides by ambient air, representing a light/heavy/light interface is flowed through a varicose nozzle (shown in Figure 1c). This initial interface is then accelerated by a Mach 1.2 shock, generated in the driver section. Simultaneous Particle Image Velocimetry (PIV) and Planar Laser Induced Fluorescence (PLIF) diagnostics are used to characterize the initial conditions and also image the evolving flow to measure instantaneous velocity and density fields. The evolving structures are re-shocked at various times using a moveable reflecting wall to study the initial condition effects on turbulence and mixing. Mean flow fields are averaged from an ensemble of experiments whose initial density fields correlate to within 97% of each other. From the mean field, the fluctuating quantities are determined, and the density self-correlations and density-velocity correlations are calculated.

  2. Proper initial conditions for the lubrication model of the flow of a thin film of fluid

    E-Print Network [OSTI]

    S. A. Suslov; A. J. Roberts

    1998-04-08T23:59:59.000Z

    A lubrication model describes the dynamics of a thin layer of fluid spreading over a solid substrate. But to make forecasts we need to supply correct initial conditions to the model. Remarkably, the initial fluid thickness is not the correct initial thickness for the lubrication model. Theory recently developed in \\cite{Roberts89b,Roberts97b} provides the correct projection of initial conditions onto a model of a dynamical system. The correct projection is determined by requiring that the model's solution exponentially quickly approaches that of the actual fluid dynamics. For lubrication we show that although the initial free surface shape contributes the most to the model's initial conditions, the initial velocity field is also an influence. The projection also gives a rationale for incorporating miscellaneous small forcing effects into the lubrication model; gravitational forcing is given as one example.

  3. Initial advance of long lava flows in open channels Daisuke Takagi, Herbert E. Huppert

    E-Print Network [OSTI]

    Huppert, Herbert

    cooling-limited when it reaches a maximum length attainable for a given supply of lava from the vent to cooling become important. Theoretical results are applied to the study of long lava flows that descended the dynamic properties of the bulk flow. In contrast, effects due to cooling played a major role throughout

  4. Pair dispersion in a chaotic flow reveals the role of the memory of initial velocity

    E-Print Network [OSTI]

    Afik, Eldad

    2015-01-01T23:59:59.000Z

    The leading paradigm for chaotic flows dominated by dissipation predicts an exponential growth of the mean distance between pairs of fluid elements, in the long run. This is reflected in the analysis of experimental results on tracer particles and the discussions which follow, as reported in recent experimental and numerical publications. To quantitatively validate this prediction, we have conducted a microfluidic experiment generating elastic turbulence, a flow characterised in the literature as smooth in space and random in time. To our great surprise, we discovered that the pair separation follows a much slower power-law --- also known as ballistic --- a notion overlooked so far for flows of this type. We provide conclusive experimental evidence that this scaling is well-desribed by the same coefficients derived from the short-time dynamics. Our finding reinforces the role of the ballistic regime over a significant range in time and space, providing a quantitative estimation for the spreading of particles ...

  5. Large-scale optimal power flow: Effects of initialization, decoupling and discretization

    SciTech Connect (OSTI)

    Papalexopoulos, A.D.; Imparato, C.F.; Wu, F.F.

    1989-08-01T23:59:59.000Z

    The optimal power flow has entered a new era since the introduction of second-order methods. These methods have renewed hopes for its on-line application in Energy Management Systems. This paper reports on some of the results of tests of a second-order OPF method. The testing was conducted using a 1500 bus network, under a variety of loading conditions. Three issues were studied: Sensitivity of OPF solutions with respect to the starting points used in the solution; Accuracy of the active/reactive decoupled approach to OPF solution; Effects of discretization of transformer taps on the OPF solutions.

  6. hal-00145315,version3-2Aug2007 Viscous potential free-surface flows in a fluid layer of finite depth

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    ´equations. Key words: potential flow, free-surface flow, viscosity, dissipation, water waves, wave damping-surface elevation. A new predominant nonlocal viscous term is derived in the bottom kinematic boundary condition potential flow theories [7]. Corresponding long wave model equations are derived. R´esum´e Ecoulements

  7. ICFT: An initial closed-loop flow test of the Fenton Hill Phase II HDR reservoir

    SciTech Connect (OSTI)

    Dash, Z.V. (ed.); Aguilar, R.G.; Dennis, B.R.; Dreesen, D.S.; Fehler, M.C.; Hendron, R.H.; House, L.S.; Ito, H.; Kelkar, S.M.; Malzahn, M.V.

    1989-02-01T23:59:59.000Z

    A 30-day closed-loop circulation test of the Phase II Hot Dry Rock reservoir at Fenton Hill, New Mexico, was conducted to determine the thermal, hydraulic, chemical, and seismic characteristics of the reservoir in preparation for a long-term energy-extraction test. The Phase II heat-extraction loop was successfully tested with the injection of 37,000 m/sup 3/ of cold water and production of 23,300 m/sup 3/ of hot water. Up to 10 MW/sub t/ was extracted when the production flow rate reached 0.0139 m/sup 3//s at 192/degree/C. By the end of the test, the water-loss rate had decreased to 26% and a significant portion of the injected water was recovered; 66% during the test and an additional 20% during subsequent venting. Analysis of thermal, hydraulic, geochemical, tracer, and seismic data suggests the fractured volume of the reservoir was growing throughout the test. 19 refs., 64 figs., 19 tabs.

  8. Improving parameter estimation and water table depth simulation in a land surface model using GRACE water storage and estimated base flow data

    E-Print Network [OSTI]

    Lo, Min-Hui; Famiglietti, James S; Yeh, P. J.-F.; Syed, T. H

    2010-01-01T23:59:59.000Z

    40, doi:10.1175/2008JHM993.1. Szilagyi, J. (2004), Heuristicsimulations of base flow [Szilagyi, 2004]. Although the

  9. In-situ study of the chemically driven flow fields in initiating homogeneous and heterogeneous nitromethane explosives

    SciTech Connect (OSTI)

    Sheffield, S.A.; Engelke, R.; Alcon, R.R.

    1989-01-01T23:59:59.000Z

    Electromagnetic gauging has been used to make in-situ measurements of particle velocity and impulse at five Lagrangian positions in nitromethane (NM) during gas-gun-driven, shock-to-detonation experiments. Homogeneous initiation experiments were conducted using NM that was chemically sensitized (using an organic base) and heterogeneous initiation experiments were done with physically sensitized NM (using silica particles). In the homogeneous initiation experiments, some of the features we observed are consistent with the classical homogeneous initiation model, however, our measurements show that the superdetonation does not form immediately after an induction time. Considerably behind the initial shock, reaction causes a wave to build up over a discernible length and this wave evolves into a superdetonation which catches the initial shock. In the heterogeneous initiation experiments, the waveforms indicated that wave growth occurs primarily in the shock front, similar to earlier observations in other heterogeneous explosives. 21 refs., 8 figs., 3 tabs.

  10. Initial test results from the RedFlow 5 kW, 10 kWh zinc-bromide module, phase 1.

    SciTech Connect (OSTI)

    Ferreira, Summer Rhodes; Rose, David Martin

    2012-02-01T23:59:59.000Z

    In this paper the performance results of the RedFlow zinc-bromide module (ZBM) Gen 2.0 are reported for Phase 1 of testing, which includes initial characterization of the module. This included physical measurement, efficiency as a function of charge and discharge rates, efficiency as a function of maximum charge capacity, duration of maximum power supplied, and limited cycling with skipped strip cycles. The goal of this first phase of testing was to verify manufacturer specifications of the zinc-bromide flow battery. Initial characterization tests have shown that the ZBM meets the manufacturer's specifications. Further testing, including testing as a function of temperature and life cycle testing, will be carried out during Phase 2 of the testing, and these results will be issued in the final report, after Phase 2 testing has concluded.

  11. Control of Initiation, Rate, and Routing of Spontaneous Capillary-Driven Flow of Liquid Droplets through Microfluidic Channels on

    E-Print Network [OSTI]

    Ismagilov, Rustem F.

    angle hysteresis, the presence or absence of a lubricating oil layer, and adsorption of surface between the plates of the SlipChip ("dead-end flow"). Rupture of the lubricating oil layer (reminiscent containing an aqueous droplet into contact with a slightly deeper channel filled with immiscible oil

  12. Radiative Flow in a Luminous Disk II

    E-Print Network [OSTI]

    Jun Fukue

    2006-01-07T23:59:59.000Z

    Radiatively-driven transfer flow perpendicular to a luminous disk is examined in the subrelativistic regime of $(v/c)^1$, taking into account the gravity of the central object. The flow is assumed to be vertical, and the gas pressure is ignored, while internal heating is assumed to be proportional to the gas density. The basic equations were numerically solved as a function of the optical depth, and the flow velocity, the height, the radiative flux, and the radiation pressure were obtained for a given radius, an initial optical depth, and initial conditions at the flow base (disk ``inside''), whereas the mass-loss rate was determined as an eigenvalue of the boundary condition at the flow top (disk ``surface''). For sufficiently luminous cases, the flow resembles the case without gravity. For less-luminous cases, however, the flow velocity decreases, and the flow would be impossible due to the existence of gravity in the case that the radiative flux is sufficiently small. Application to a supercritical accretion disk with mass loss is briefly discussed.

  13. Modeling and analysis framework for core damage propagation during flow-blockage-initiated accidents in the Advanced Neutron Source Reactor at Oak Ridge National Laboratory

    SciTech Connect (OSTI)

    Kim, S.H.; Taleyarkhan, R.P.; Navarro-Valenti, S.; Georgevich, V.

    1995-09-01T23:59:59.000Z

    This paper describes modeling and analysis to evaluate the extent of core damage during flow blockage events in the Advanced Neutron Source (ANS) reactor planned to be built at the Oak Ridge National Laboratory (ORNL). Damage propagation is postulated to occur from thermal conduction between damaged and undamaged plates due to direct thermal contact. Such direct thermal contact may occur because of fuel plate swelling during fission product vapor release or plate buckling. Complex phenomena of damage propagation were modeled using a one-dimensional heat transfer model. A scoping study was conducted to learn what parameters are important for core damage propagation, and to obtain initial estimates of core melt mass for addressing recriticality and steam explosion events. The study included investigating the effects of the plate contact area, the convective heat transfer coefficient, thermal conductivity upon fuel swelling, and the initial temperature of the plate being contacted by the damaged plate. Also, the side support plates were modeled to account for their effects on damage propagation. The results provide useful insights into how various uncertain parameters affect damage propagation.

  14. Variable depth core sampler

    DOE Patents [OSTI]

    Bourgeois, P.M.; Reger, R.J.

    1996-02-20T23:59:59.000Z

    A variable depth core sampler apparatus is described comprising a first circular hole saw member, having longitudinal sections that collapses to form a point and capture a sample, and a second circular hole saw member residing inside said first hole saw member to support the longitudinal sections of said first hole saw member and prevent them from collapsing to form a point. The second hole saw member may be raised and lowered inside said first hole saw member. 7 figs.

  15. IN-DEPTH REPORT: Environmental

    E-Print Network [OSTI]

    in local policy debates about fracking. This In-depth Report from Science for Environment Policy explores

  16. Constitutive modelling approach for evaluating the triggering of flow slides3 Giuseppe Buscarnera

    E-Print Network [OSTI]

    Entekhabi, Dara

    static liquefaction in shallow deposits. The methodology accounts for anisotropy due to18 the initial the margin of safety against static20 liquefaction and the depths likely to be affected by the propagation angle needed for incipient instability. The analyses show that liquefaction and24 flow failures

  17. Air and water flows in a large sand box with a two-layer aquifer system

    E-Print Network [OSTI]

    Jiao, Jiu Jimmy

    Air and water flows in a large sand box with a two-layer aquifer system Xingxing Kuang & Jiu Jimmy negative air pressure can be generated in the vadose zone during pumping. The negative air pressure. The initial water-table depth has a significant effect on the generated negative air pressure. The shallower

  18. Formation depths of Fraunhofer lines

    E-Print Network [OSTI]

    Gurtovenko, E A

    2015-01-01T23:59:59.000Z

    We have summed up our investigations performed in 1970--1993. The main task of this paper is clearly to show processes of formation of spectral lines as well as their distinction by validity and by location. For 503 photospheric lines of various chemical elements in the wavelength range 300--1000 nm we list in Table the average formation depths of the line depression and the line emission for the line centre and on the half-width of the line, the average formation depths of the continuum emission as well as the effective widths of the layer of the line depression formation. Dependence of average depths of line depression formation on excitation potential, equivalent widths, and central line depth are demonstrated by iron lines.

  19. Rotating drum variable depth sampler

    DOE Patents [OSTI]

    Nance, Thomas A. (Aiken, SC); Steeper, Timothy J. (Trenton, SC)

    2008-07-01T23:59:59.000Z

    A sampling device for collecting depth-specific samples in silt, sludge and granular media has three chambers separated by a pair of iris valves. Rotation of the middle chamber closes the valves and isolates a sample in a middle chamber.

  20. An initial look at the dynamics of the microscale flow field within a large wind farm in response to variations in the natural inflow

    SciTech Connect (OSTI)

    Kelley, N.D.

    1989-10-01T23:59:59.000Z

    This paper discusses some early results from a study to examine the influence of the natural inflow structure on the internal microscale turbulence environment of a large wind farm. Two fully equipped, high-resolution boundary layer measurement systems were employed to document the alteration of the turbulent structure as the flow entered and left a wind park consisting of 41 rows of turbines. These systems collected data continuously for a period of several weeks during the peak wind season in San Gorgonio Pass. In addition, statistical summaries of the inflow and outflow characteristics from a hub-height elevation were recorded prior to, during and after the detailed measurement period. Results of these hub-height summaries will be discussed and interpreted in this paper. 11 figs.

  1. Elliptic and Hexadecapole flow of charged hadron in viscous hydrodynamics with Glauber and Color Glass Condensate initial conditions for Pb-Pb collision at $\\sqrt{s_{NN}}$=2.76 TeV

    E-Print Network [OSTI]

    Roy, Victor; Chaudhuri, A K

    2012-01-01T23:59:59.000Z

    The experimentally measured elliptic ($v_{2}$) and hexadecapole ($v_{4}$) flow of charged particles as a function of transverse momentum ($p_{T}$) at midrapidity in Pb-Pb collisions at $\\sqrt{s_{\\mathrm NN}}$ = 2.76 TeV are compared with the relativistic viscous hydrodynamic model simulations. The simulations are carried out for two different initial energy density profiles obtained from (i) Glauber model, and (ii) Color Glass Condensate (CGC) model. Comparison to experimental data for 10-20% to 40-50% centrality, shows that a centrality dependent shear viscosity to entropy density ($\\eta/s$) ratio with values ranging between 0.0 to 0.12 are needed to explain the $v_{2}$ data for simulations with the Glauber based initial condition. Whereas for the CGC based initial conditions a slightly higher value of $\\eta/s$ is preferred, around 0.08 to 0.16. From the comparison of the $v_{4}$ simulated results to the corresponding experimental measurements we observe that for the centralities 20-30% to 40-50% the $\\eta/s...

  2. Fluid Gravity Engineering Rocket motor flow analysis

    E-Print Network [OSTI]

    Anand, Mahesh

    Fluid Gravity Engineering Capability · Rocket motor flow analysis -Internal (performance) -External (plume / contamination) · Effect on landing site (surface alteration) -In-depth flow through porous young scientists/engineers Fluid Gravity Engineering Ltd #12;

  3. SCB initiator

    DOE Patents [OSTI]

    Bickes Jr., Robert W.; Renlund, Anita M.; Stanton, Philip L.

    1994-11-01T23:59:59.000Z

    A detonator for high explosives initiated by mechanical impact includes a cylindrical barrel, a layer of flyer material mechanically covering the barrel at one end, and a semiconductor bridge ignitor including a pair of electrically conductive pads connected by a semiconductor bridge. The bridge is in operational contact with the layer, whereby ignition of said bridge forces a portion of the layer through the barrel to detonate the explosive. Input means are provided for igniting the semiconductor bridge ignitor.

  4. SCB initiator

    DOE Patents [OSTI]

    Bickes, Jr., Robert W. (Albuquerque, NM); Renlund, Anita M. (Albuquerque, NM); Stanton, Philip L. (Albuquerque, NM)

    1994-01-01T23:59:59.000Z

    A detonator for high explosives initiated by mechanical impact includes a cylindrical barrel, a layer of flyer material mechanically covering the barrel at one end, and a semiconductor bridge ignitor including a pair of electrically conductive pads connected by a semiconductor bridge. The bridge is in operational contact with the layer, whereby ignition of said bridge forces a portion of the layer through the barrel to detonate the explosive. Input means are provided for igniting the semiconductor bridge ignitor.

  5. Initial Proposal

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville PowerCherries 82981-1cnHigh SchoolIn Other News linkThermal PhenomenaInitial

  6. Comparison of Air Fluorescence and Ionization Measurements of E.M. Shower Depth Profiles: Test of a UHECR Detector Technique

    SciTech Connect (OSTI)

    Belz, J.; Cao, Z.; Huentemeyer, P.; Jui, C.C.H.; Martens, K.; Matthews, J.; Maestas, M.; Smith, J.; Sokolsky, P.; Springer, R.W.; Thomas, J.; Thomas, S.; /Utah U.; Chen,P.; Field, Clive; Hast, C.; Iverson, R.; Ng, J.S.T.; Odian, A.; Reil, K.; Vincke, H.; Walz, D.; /SLAC /Montana U. /Rutgers U., Piscataway /Taiwan, Natl. Taiwan U.; ,

    2005-10-07T23:59:59.000Z

    Measurements are reported on the fluorescence of air as a function of depth in electromagnetic showers initiated by bunches of 28.5 GeV electrons. The light yield is compared with the expected and observed depth profiles of ionization in the showers. It validates the use of atmospheric fluorescence profiles in measuring ultra high energy cosmic rays.

  7. Heat Flow, Heat Transfer And Lithosphere Rheology In Geothermal...

    Open Energy Info (EERE)

    heat flow values as high as several watts per meter squared can be found. Systematic interpretation of heat flow patterns sheds light on heat transfer mechanisms at depth on...

  8. Energy Initiatives at Virginia Tech presented to

    E-Print Network [OSTI]

    Crawford, T. Daniel

    Energy Initiatives at Virginia Tech A Snapshot presented to COE Administrative Committee Satish V and new initiatives What are the missing pieces? Benchmarking #12;US energy flow in 2009 #12;Important findings of the DOE Quadrennial Technology Review (QTR) #12;The 3Ms of energy technologies #12;The QTR has

  9. Oil and Gas CDT Predicting fault permeability at depth: incorporating natural

    E-Print Network [OSTI]

    Henderson, Gideon

    Oil and Gas CDT Predicting fault permeability at depth: incorporating natural permeability controls on fluid flow in oil and gas reservoirs. Fault zones are composed of many deformation elements will receive 20 weeks bespoke, residential training of broad relevance to the oil and gas industry: 10 weeks

  10. Flow tests of the Gladys McCall well

    SciTech Connect (OSTI)

    Randolph, P.L.; Hayden, C.G.; Rogers, L.A. (Institute of Gas Technology, Chicago, IL (United States))

    1992-04-01T23:59:59.000Z

    This report pulls together the data from all of the geopressured-geothermal field research conducted at the Gladys McCall well. The well produced geopressured brine containing dissolved natural gas from the Lower Miocene sands at a depth of 15,150 to 16,650 feet. More than 25 million barrels of brine and 727 million standard cubic feet of natural gas were produced in a series of flow tests between December 1982 and October 1987 at various brine flow rates up to 28,000 barrels per day. Initial short-term flow tests for the Number 9 Sand found the permeability to be 67 to 85 md (millidarcies) for a brine volume of 85 to 170 million barrels. Initial short-term flow tests for the Number 8 Sand found a permeability of 113 to 132 md for a reservoir volume of 430 to 550 million barrels of brine. The long-term flow and buildup test of the Number 8 Sand found that the high-permeability reservoir connected to the wellbore (measured by the short-term flow test) was connected to a much larger, low-permeability reservoir. Numerical simulation of the flow and buildup tests required this large connected reservoir to have a volume of about 8 billion barrels (two cubic miles of reservoir rock) with effective permeabilities in the range of 0.2 to 20 md. Calcium carbonate scale formation in the well tubing and separator equipment was a problem. During the first 2 years of production, scale formation was prevented in the surface equipment by injection of an inhibitor upstream of the choke. Starting in 1985, scale formation in the production tubing was successfully prevented by injecting inhibitor pills'' directly into the reservoir. Corrosion and/or erosion of surface piping and equipment, as well as disposal well tubing, was also significant.

  11. Final Report: Depth-specific Hydraulic Testing of Yucca Flat and Frenchman Flat Environmental Restoration Wells, FY 2003

    SciTech Connect (OSTI)

    Oberlander, Phil; Russell, Charles

    2004-03-09T23:59:59.000Z

    Borehole flow logging contributes a greater understanding of subsurface conditions than measuring well discharge only at land surface. Combining the results of up to nine borehole flow logs to estimate hydraulic conductivity with depth includes data averaging over vertical intervals and averaging of calculated hydraulic conductivities among the various flow logs. Data filtering is also necessary to aid in differentiating between changes in borehole flow rate due to flow turbulence (and other causes) and those associated with groundwater inflow. Borehole flow logging during well pumping has provided the quantity of groundwater iniflow and hydraulic conductivity at depth for three wells. The results provided are believed to be an appropriate balance between predictive accuracy and preserving spatial resolution.

  12. Source depth for solar p-modes

    E-Print Network [OSTI]

    Pawan Kumar; Sarbani Basu

    2000-06-15T23:59:59.000Z

    Theoretically calculated power spectra are compares with observed solar p-mode velocity power spectra over a range of mode degree and frequency. The depth for the sources responsible for exciting p-modes of frequency 2.0 mHz is determined from the asymmetry of their power spectra and found to be about 800 km below the photosphere for quadrupole sources and 150 km if sources are dipole. The source depth for high frequency oscillations of frequency greater than about 6 mHz is 180 (50) km for quadrupole (dipole) sources.

  13. Refining k-means by Bootstrap and Data Depth Aurora Torrente and Juan Romo

    E-Print Network [OSTI]

    Romo, Juan

    Refining k-means by Bootstrap and Data Depth Aurora Torrente and Juan Romo Departamento de Estad two simple, computationally fast methods that allow the refinement of the initial points of k-means to cluster a given data set. They are based on alternating k-means and the search of the deepest (most

  14. Depth and Depth-Color Coding using Shape-Adaptive Wavelets

    E-Print Network [OSTI]

    Do, Minh N.

    -view autostereoscopic displays, 3D-TV is expected to be the next evolution of television after high definition. Three Abstract We present a novel depth and depth-color codec aimed at free-viewpoint 3D-TV. The proposed codec is implemented by shape-adaptive lifting, which enables fast computations and perfect reconstruction. We derive

  15. Defense-in-Depth, How Department of Energy Implements Radiation...

    Energy Savers [EERE]

    Defense-in-Depth, How Department of Energy Implements Radiation Protection in Low Level Waste Disposal Defense-in-Depth, How Department of Energy Implements Radiation Protection in...

  16. Africa Aerosol Optical Depth Obtained From MISR

    E-Print Network [OSTI]

    Frank, Thomas D.

    OpticalDepth Central African Republic Chad Djibouti Egypt Ethiopia Libya Kenya Somalia Sudan Uganda #12;Southern Africa Ethiopia Libya Kenya Somalia Sudan Uganda #12;Southern Africa 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 Mean Seasonal

  17. Collision Avoidance in Depth Space I. INTRODUCTION

    E-Print Network [OSTI]

    De Luca, Alessandro

    ; compute distances between the obstacles and the robot; optionally project the results in the CartesianCollision Avoidance in Depth Space I. INTRODUCTION When humans and robots share the same work space, safety is the primary issue of concern [8]. Secondary but not negligible is to prevent robot damages due

  18. Tsunami and acoustic-gravity waves in water of constant depth

    SciTech Connect (OSTI)

    Hendin, Gali; Stiassnie, Michael [Faculty of Civil and Environmental Engineering, Technion Israel institute of technology, Haifa 32000 (Israel)] [Faculty of Civil and Environmental Engineering, Technion Israel institute of technology, Haifa 32000 (Israel)

    2013-08-15T23:59:59.000Z

    A study of wave radiation by a rather general bottom displacement, in a compressible ocean of otherwise constant depth, is carried out within the framework of a three-dimensional linear theory. Simple analytic expressions for the flow field, at large distance from the disturbance, are derived. Realistic numerical examples indicate that the Acoustic-Gravity waves, which significantly precede the Tsunami, are expected to leave a measurable signature on bottom-pressure records that should be considered for early detection of Tsunami.

  19. Accurate hydrogen depth profiling by reflection elastic recoil detection analysis

    SciTech Connect (OSTI)

    Verda, R. D. (Raymond D.); Tesmer, Joseph R.; Nastasi, Michael Anthony,; Bower, R. W. (Robert W.)

    2001-01-01T23:59:59.000Z

    A technique to convert reflection elastic recoil detection analysis spectra to depth profiles, the channel-depth conversion, was introduced by Verda, et al [1]. But the channel-depth conversion does not correct for energy spread, the unwanted broadening in the energy of the spectra, which can lead to errors in depth profiling. A work in progress introduces a technique that corrects for energy spread in elastic recoil detection analysis spectra, the energy spread correction [2]. Together, the energy spread correction and the channel-depth conversion comprise an accurate and convenient hydrogen depth profiling method.

  20. Monazite Th-Pb age depth profiling

    SciTech Connect (OSTI)

    Grove, M.; Harrison, T.M. [Univ. of California, Los Angeles, CA (United States)] [Univ. of California, Los Angeles, CA (United States)

    1999-06-01T23:59:59.000Z

    The significant capabilities of the ion microprobe for thermochronometric investigations of geologic materials remain largely unexploited. Whereas {sup 208}Pb/{sup 232}Th spot analysis allows {approximately} 10-mm-scale imaging of Pb loss profiles or overgrowths in sectioned monazite grains, the spatial resolution offered by depth profiling into the surface region of natural crystals is more than two orders of magnitude higher. The authors document here the ability of the high-resolution ion microprobe to detect {sup 208}Pb/{sup 232}Th age differences of < 1 m.y. with better than 0.05 {micro}m depth resolution in the outer micron of Tertiary monazites from the hanging wall of the Himalayan Main Central thrust. Age gradients on this scale are inaccessible to ion microprobe spot analysis or conventional thermal ionization mass spectrometry. Interpretation of the near-surface {sup 208}Pb distributions with available monazite Pb diffusion data illustrates the potential of the approach for recovering continuous, high-temperature thermal history information not previously available.

  1. APEC Smart Grid Initiative

    SciTech Connect (OSTI)

    Bloyd, Cary N.

    2012-03-01T23:59:59.000Z

    This brief paper describes the activities of the Asia Pacific Economic Cooperation (APEC) Smart Grid Initiative (ASGI) which is being led by the U.S. and developed by the APEC Energy Working Group. In the paper, I describe the origin of the initiative and briefly mention the four major elements of the initiative along with existing APEC projects which support it.

  2. Gulf of Mexico Proved Reserves By Water Depth, 2009

    Gasoline and Diesel Fuel Update (EIA)

    Gulf of Mexico Proved Reserves and Production by Water Depth, 2009 1 Gulf of Mexico Proved Reserves and Production by Water Depth The Gulf of Mexico Federal Offshore region (GOM...

  3. Statistical Data Depth and the Graphics Hardware Shankar Krishnan

    E-Print Network [OSTI]

    Mustafa, Nabil Hassan

    by NSF under grants CCR-00-86013 EIA-98-70724, EIA-99-72879, EIA-01-31905, and CCR-02-04118. 1 #12;Figure). Organization. We first survey various definitions of statistical depth, and the related computa- tional, and the region of all points with depth greater than some integer . Now, we survey various depth measures

  4. A preliminary assessment of the effects of groundwater flow on closed-loop ground source heat pump systems

    SciTech Connect (OSTI)

    Chiasson, A.D.; Rees, S.J.; Spitler, J.D.

    2000-07-01T23:59:59.000Z

    A preliminary study has been made of the effects of groundwater flow on the heat transfer characteristics of vertical closed-loop heat exchangers and the ability of current design and in-situ thermal conductivity measurement techniques to deal with these effects. It is shown that an initial assessment of the significance of groundwater flow can be made by examining the Peclet number of the flow. A finite-element numerical groundwater flow and heat transfer model has been used to simulate the effects of groundwater flow on a single closed-loop heat exchanger in various geologic materials. These simulations show that advection of heat by groundwater flow significantly enhances heat transfer in geologic materials with high hydraulic conductivity, such as sands, gravels, and rocks exhibiting fractures and solution channels. Simulation data were also used to derive effective thermal conductivities with an in-situ thermal conductivity estimation procedure. These data were used to design borehole fields of different depths for a small commercial building. The performance of these borehole field designs was investigated by simulating each borehole field using the pre-calculated building loads over a ten-year period. Results of these simulations, in terms of the minimum and peak loop temperatures, were used to examine the ability of current design methods to produce workable and efficient designs under a range of groundwater flow conditions.

  5. An energy spread correction for ERDA hydrogen depth profiling

    SciTech Connect (OSTI)

    Verda, R. D. (Raymond D.); Nastasi, Michael Anthony,

    2002-01-01T23:59:59.000Z

    A technique for hydrogen depth profiling by reflection elastic recoil detection analysis called the channel-depth conversion was introduced by Verda, et al.' However, the energy spread in elastic recoil detection analysis spectra, which causes a broadening in the energy range and leads to errors in depth profiling, was not addressed by this technique. Here we introduce a technique to addresses this problem, called the energy spread correction. Together, the energy spread correction and the channel-depth conversion techniques comprise the depth profiling method presented in this work.

  6. Energy Security Initiatives Update

    Broader source: Energy.gov [DOE]

    Presentationgiven at the Spring 2009 Federal Utility Partnership Working Group (FUPWG) meetinglists Federal government energy security initiatives.

  7. Initiating Business with INL

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Initiating Business with INL The INL Small Business Program Office (SBPO) serves as the advocate and point of contact for businesses seeking contracting opportunities. We ask you...

  8. Strategic Growth Initiative (Michigan)

    Broader source: Energy.gov [DOE]

    A joint venture between Michigan Department of Agriculture and Rural Development (MDARD) and the Michigan Economic Development Corporation (MEDC), the Strategic Growth Initiative Grant Program was...

  9. Salt Waste Processing Initiatives

    Office of Environmental Management (EM)

    1 Patricia Suggs Salt Processing Team Lead Assistant Manager for Waste Disposition Project Office of Environmental Management Savannah River Site Salt Waste Processing Initiatives...

  10. Some intriguing properties of Tukey's half-space depth

    E-Print Network [OSTI]

    Dutta, Subhajit; Chaudhuri, Probal; 10.3150/10-BEJ322

    2012-01-01T23:59:59.000Z

    For multivariate data, Tukey's half-space depth is one of the most popular depth functions available in the literature. It is conceptually simple and satisfies several desirable properties of depth functions. The Tukey median, the multivariate median associated with the half-space depth, is also a well-known measure of center for multivariate data with several interesting properties. In this article, we derive and investigate some interesting properties of half-space depth and its associated multivariate median. These properties, some of which are counterintuitive, have important statistical consequences in multivariate analysis. We also investigate a natural extension of Tukey's half-space depth and the related median for probability distributions on any Banach space (which may be finite- or infinite-dimensional) and prove some results that demonstrate anomalous behavior of half-space depth in infinite-dimensional spaces.

  11. Fundamental Thermal Fluid Physics of High Temperature Flows in Advanced Reactor Systems - Nuclear Energy Research Initiative Program Interoffice Work Order (IWO) MSF99-0254 Final Report for Period 1 August 1999 to 31 December 2002

    SciTech Connect (OSTI)

    McEligot, D.M.; Condie, K.G.; Foust, T.D.; McCreery, G.E.; Pink, R.J.; Stacey, D.E. (INEEL); Shenoy, A.; Baccaglini, G. (General Atomics); Pletcher, R.H. (Iowa State U.); Wallace, J.M.; Vukoslavcevic, P. (U. Maryland); Jackson, J.D. (U. Manchester, UK); Kunugi, T. (Kyoto U., Japan); Satake, S.-i. (Tokyo U. Science, Japan)

    2002-12-31T23:59:59.000Z

    The ultimate goal of the study is the improvement of predictive methods for safety analyses and design of advanced reactors for higher efficiency and enhanced safety and for deployable reactors for electrical power generation, process heat utilization and hydrogen generation. While key applications would be advanced gas-cooled reactors (AGCRs) using the closed Brayton cycle (CBC) for higher efficiency (such as the proposed Gas Turbine - Modular Helium Reactor (GT-MHR) of General Atomics [Neylan and Simon, 1996]), results of the proposed research should also be valuable in reactor systems with supercritical flow or superheated vapors, e.g., steam. Higher efficiency leads to lower cost/kwh and reduces life-cycle impacts of radioactive waste (by reducing waters/kwh). The outcome will also be useful for some space power and propulsion concepts and for some fusion reactor concepts as side benefits, but they are not the thrusts of the investigation. The objective of the project is to provide fundamental thermal fluid physics knowledge and measurements necessary for the development of the improved methods for the applications.

  12. Hyperspectral Aerosol Optical Depths from TCAP Flights

    SciTech Connect (OSTI)

    Shinozuka, Yohei; Johnson, Roy R.; Flynn, Connor J.; Russell, P. B.; Schmid, Beat; Redemann, Jens; Dunagan, Stephen; Kluzek, Celine D.; Hubbe, John M.; Segal-Rosenheimer, Michal; Livingston, J. M.; Eck, T.; Wagener, Richard; Gregory, L.; Chand, Duli; Berg, Larry K.; Rogers, Ray; Ferrare, R. A.; Hair, John; Hostetler, Chris A.; Burton, S. P.

    2013-11-13T23:59:59.000Z

    4STAR (Spectrometer for Sky-Scanning, Sun-Tracking Atmospheric Research), the worlds first hyperspectral airborne tracking sunphotometer, acquired aerosol optical depths (AOD) at 1 Hz during all July 2012 flights of the Two Column Aerosol Project (TCAP). Root-mean square differences from AERONET ground-based observations were 0.01 at wavelengths between 500-1020 nm, 0.02 at 380 and 1640 nm and 0.03 at 440 nm in four clear-sky fly-over events, and similar in ground side-by-side comparisons. Changes in the above-aircraft AOD across 3-km-deep spirals were typically consistent with integrals of coincident in situ (on DOE Gulfstream 1 with 4STAR) and lidar (on NASA B200) extinction measurements within 0.01, 0.03, 0.01, 0.02, 0.02, 0.02 at 355, 450, 532, 550, 700, 1064 nm, respectively, despite atmospheric variations and combined measurement uncertainties. Finer vertical differentials of the 4STAR measurements matched the in situ ambient extinction profile within 14% for one homogeneous column. For the AOD observed between 350-1660 nm, excluding strong water vapor and oxygen absorption bands, estimated uncertainties were ~0.01 and dominated by (then) unpredictable throughput changes, up to +/-0.8%, of the fiber optic rotary joint. The favorable intercomparisons herald 4STARs spatially-resolved high-frequency hyperspectral products as a reliable tool for climate studies and satellite validation.

  13. A Materials Facilities Initiative -

    E-Print Network [OSTI]

    A Materials Facilities Initiative - FMITS & MPEX D.L. Hillis and ORNL Team Fusion & Materials for Nuclear Systems Division July 10, 2014 #12;2 Materials Facilities Initiative JET ITER FNSF Fusion Reactor Challenges for materials: fluxes and fluence, temperatures 50 x divertor ion fluxes up to 100 x neutron

  14. Initial data engineering

    E-Print Network [OSTI]

    Piotr T. Chrusciel; James Isenberg; Daniel Pollack

    2005-06-16T23:59:59.000Z

    We present a local gluing construction for general relativistic initial data sets. The method applies to generic initial data, in a sense which is made precise. In particular the trace of the extrinsic curvature is not assumed to be constant near the gluing points, which was the case for previous such constructions. No global conditions on the initial data sets such as compactness, completeness, or asymptotic conditions are imposed. As an application, we prove existence of spatially compact, maximal globally hyperbolic, vacuum space-times without any closed constant mean curvature spacelike hypersurface.

  15. Method and apparatus of prefetching streams of varying prefetch depth

    DOE Patents [OSTI]

    Gara, Alan (Mount Kisco, NY); Ohmacht, Martin (Yorktown Heights, NY); Salapura, Valentina (Chappaqua, NY); Sugavanam, Krishnan (Mahopac, NY); Hoenicke, Dirk (Seebruck-Seeon, DE)

    2012-01-24T23:59:59.000Z

    Method and apparatus of prefetching streams of varying prefetch depth dynamically changes the depth of prefetching so that the number of multiple streams as well as the hit rate of a single stream are optimized. The method and apparatus in one aspect monitor a plurality of load requests from a processing unit for data in a prefetch buffer, determine an access pattern associated with the plurality of load requests and adjust a prefetch depth according to the access pattern.

  16. The President's Biofuels Initiative

    Broader source: Energy.gov (indexed) [DOE]

    Biofuels Initiative Neil Rossmeissl Office of the Biomass Program Energy Efficiency and Renewable Energy Why Can't We Regulate Our Way There? 25 20 15 10 5 0 1970 1980 1990 2000...

  17. Mississippi Clean Energy Initiative

    Broader source: Energy.gov [DOE]

    In April 2010, the Mississippi Legislature enacted [http://billstatus.ls.state.ms.us/documents/2010/pdf/HB/1700-1799/HB1701S... HB 1701], establishing the Mississippi Clean Energy Initiative. This...

  18. President's Hydrogen Fuel Initiative

    Broader source: Energy.gov (indexed) [DOE]

    Hydrogen Fuel Initiative Workshop on Manufacturing R&D for the Hydrogen Economy Washington, DC July 13, 2005 JoAnn Milliken DOE Hydrogen Program Planning U.S. Energy Dependence is...

  19. Advanced Technology Vehicle Lab Benchmarking - Level 2 (in-depth...

    Broader source: Energy.gov (indexed) [DOE]

    Other Institutions 13 J1711 HEV & PHEV test procedures In-depth Benchmarking DOE technology evaluation * DOE requests * National Lab requests AVTA (Advanced Vehicle Testing...

  20. aes depth profile: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    California eScholarship Repository Summary: al. , 2005). The vertical profile of wind speed over the seavertical directionality Depth-dependence of wind speedVertical...

  1. Electrode immersion depth determination and control in electroslag remelting furnace

    DOE Patents [OSTI]

    Melgaard, David K. (Albuquerque, NM); Beaman, Joseph J. (Austin, TX); Shelmidine, Gregory J. (Tijeras, NM)

    2007-02-20T23:59:59.000Z

    An apparatus and method for controlling an electroslag remelting furnace comprising adjusting electrode drive speed by an amount proportional to a difference between a metric of electrode immersion and a set point, monitoring impedance or voltage, and calculating the metric of electrode immersion depth based upon a predetermined characterization of electrode immersion depth as a function of impedance or voltage.

  2. Depth Camera based Localization and Navigation for Indoor Mobile Robots

    E-Print Network [OSTI]

    McLaren, Bruce Martin

    . 1. Snapshot of depth image processing: On the left, the complete 3D point cloud is shown in white cloud by sampling points from the depth image, and classifying local grouped sets of points as belonging. The full sampled point cloud (consisting of both plane filtered as well as outlier points) is processed

  3. Imaging wave-penetrable objects in a finite depth ocean

    E-Print Network [OSTI]

    Zou, Jun

    Imaging wave-penetrable objects in a finite depth ocean Keji Liu Yongzhi Xu Jun Zou Abstract. We- penetrable inhomogeneous medium in a 3D finite depth ocean. The method is based on a scat- tering analysis extend the direct sampling method proposed in [13] to image a wave- penetrable inhomogeneous medium

  4. A Depth Space Approach to Human-Robot Collision Avoidance

    E-Print Network [OSTI]

    De Luca, Alessandro

    A Depth Space Approach to Human-Robot Collision Avoidance Fabrizio Flacco Torsten Kr is presented for safe human-robot coexistence. The main contribution is a fast method to evaluate distances between the robot and possibly moving obstacles (including humans), based on the concept of depth space

  5. Can fusion coefficients be calculated from the depth rule ?

    E-Print Network [OSTI]

    A. N. Kirillov; P. Mathieu; D. Senechal; M. Walton

    1992-09-28T23:59:59.000Z

    The depth rule is a level truncation of tensor product coefficients expected to be sufficient for the evaluation of fusion coefficients. We reformulate the depth rule in a precise way, and show how, in principle, it can be used to calculate fusion coefficients. However, we argue that the computation of the depth itself, in terms of which the constraints on tensor product coefficients is formulated, is problematic. Indeed, the elements of the basis of states convenient for calculating tensor product coefficients do not have a well-defined depth! We proceed by showing how one can calculate the depth in an `approximate' way and derive accurate lower bounds for the minimum level at which a coupling appears. It turns out that this method yields exact results for $\\widehat{su}(3)$ and constitutes an efficient and simple algorithm for computing $\\widehat{su}(3)$ fusion coefficients.

  6. Aerodynamic Design for Swept-wing Laminar Flow

    E-Print Network [OSTI]

    Belisle, Michael Joseph

    2013-11-08T23:59:59.000Z

    (SARGE), a natural laminar flow and passive laminar flow control wing glove flight experiment funded by the NASA Environmentally Responsible Aviation initiative. The experiment seeks to raise the technology readiness level of the spanwise...

  7. Clean Coal Power Initiative

    SciTech Connect (OSTI)

    Doug Bartlett; Rob James; John McDermott; Neel Parikh; Sanjay Patnaik; Camilla Podowski

    2006-03-31T23:59:59.000Z

    This report is the fifth quarterly Technical Progress Report submitted by NeuCo, Incorporated, under Award Identification Number, DE-FC26-04NT41768. This award is part of the Clean Coal Power Initiative (''CCPI''), the ten-year, $2B initiative to demonstrate new clean coal technologies in the field. This report is one of the required reports listed in Attachment B Federal Assistance Reporting Checklist, part of the Cooperative Agreement. The report covers the award period January 1, 2006 - March 31, 2006 and NeuCo's efforts within design, development, and deployment of on-line optimization systems during that period.

  8. Initiatives | Department of Energy

    Office of Environmental Management (EM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33 111 1,613 122Commercial602 1,39732on Armed ServicesDepartmentInformationInitiatives Initiatives

  9. Flow chamber

    DOE Patents [OSTI]

    Morozov, Victor (Manassas, VA)

    2011-01-18T23:59:59.000Z

    A flow chamber having a vacuum chamber and a specimen chamber. The specimen chamber may have an opening through which a fluid may be introduced and an opening through which the fluid may exit. The vacuum chamber may have an opening through which contents of the vacuum chamber may be evacuated. A portion of the flow chamber may be flexible, and a vacuum may be used to hold the components of the flow chamber together.

  10. GLOBAL TAXONOMY INITIATIVE

    E-Print Network [OSTI]

    Grant, Taran

    #12;THE GLOBAL TAXONOMY INITIATIVE: Using Systematic Inventories to Meet Country and Regional Needs International #12;Table of Contents Introduction 1 I. Using Inventories to Build Capacity and Advance the GTI 2 for systematic inventories. A major component of the workshop addressed how systematic inventories can serve

  11. BRAZIL RESEARCH INITIATIVES

    E-Print Network [OSTI]

    Liu, Taosheng

    BRAZIL RESEARCH INITIATIVES Michigan State University (MSU) identifies Brazil as a global priority and challenges become increasingly part of the U.S.-Brazil agenda, MSU desires partnerships aimed at producing in the U.S. and one in Brazil, to share research strategies and explore joint projects in several research

  12. ----------------IRI ---------------Initiative & Referendum Institute

    E-Print Network [OSTI]

    Rohs, Remo

    results a conservative cast: Marijuana rejected. Marijuana proponents went 0-4 on election night. California's Propo- sition 19 that would have legalized marijuana was one of the highest profile initiatives this year. In early polls, it led substantially but ended up failing 45-55. The silver lining for marijuana

  13. Staff Initials ______ Membership Application*

    E-Print Network [OSTI]

    NOT include the basketball gym. #12;Staff Initials ______ Furman University Fitness Center Acknowledgement and Release Form I, the undersigned, acknowledge that I am at least 18 years of age and that I am voluntarily here) I acknowledge that I am aware of the possible risks, dangers, and hazards associated with my

  14. The Sustainability "Green Initiative"

    E-Print Network [OSTI]

    Harms, Kyle E.

    sustainability approach aimed at: Lowering energy use and cost Reducing greenhouse gases Water and waste waterThe Sustainability "Green Initiative" At LAPPA October, 2008 #12;Sustainability is the capacity Carbon Footprint Ozone Friendly Global Warming Renewable Energy Biodegradable What does this whole

  15. Geological flows

    E-Print Network [OSTI]

    Yu. N. Bratkov

    2008-11-19T23:59:59.000Z

    In this paper geology and planetology are considered using new conceptual basis of high-speed flow dynamics. Recent photo technics allow to see all details of a flow, 'cause the flow is static during very short time interval. On the other hand, maps and images of many planets are accessible. Identity of geological flows and high-speed gas dynamics is demonstrated. There is another time scale, and no more. All results, as far as the concept, are new and belong to the author. No formulae, pictures only.

  16. Flow dynamics and solute transport in unsaturated rock fractures

    E-Print Network [OSTI]

    Su, G.W.

    2011-01-01T23:59:59.000Z

    channel only, while residual water from the initial invasionmeniscus coalesced with residual water along its flow pathto varying amounts of residual water left by the previous

  17. 2nd Quarterly technical progress report for geothermal system temperature-depth database

    SciTech Connect (OSTI)

    Blackwell, D.D.

    1997-07-30T23:59:59.000Z

    At the Southern Methodist University Geothermal Laboratory in Dallas, Texas, the Earth`s surface and internal temperature are studied. With financial support from the U.S. Department of Energy, a data base containing geothermal temperature well information for the United States is being developed. During this calendar quarter, activity with this project has continued involving several different tasks: planning and development of the geothermal system thermal-well data base and temperature-depth data, development of the specifications for the data base, and completion of an initial inventory of the geothermal areas for which data are available.

  18. Plug flow and the breakdown of Bagnold scaling in cohesive granular flows

    E-Print Network [OSTI]

    Robert Brewster; Gary S. Grest; James W. Landry; Alex J. Levine

    2005-09-05T23:59:59.000Z

    Cohesive granular media flowing down an inclined plane are studied by discrete element simulations. Previous work on cohesionless granular media demonstrated that within the steady flow regime where gravitational energy is balanced by dissipation arising from intergrain forces, the velocity profile in the flow direction scales with depth in a manner consistent with the predictions of Bagnold. Here we demonstrate that this Bagnold scaling does not hold for the analogous steady-flows in cohesive granular media. We develop a generalization of the Bagnold constitutive relation to account for our observation and speculate as to the underlying physical mechanisms responsible for the different constitutive laws for cohesive and noncohesive granular media.

  19. Microphysical and Dynamical Influences on Cirrus Cloud Optical Depth Distributions

    SciTech Connect (OSTI)

    Kay, J.; Baker, M.; Hegg, D.

    2005-03-18T23:59:59.000Z

    Cirrus cloud inhomogeneity occurs at scales greater than the cirrus radiative smoothing scale ({approx}100 m), but less than typical global climate model (GCM) resolutions ({approx}300 km). Therefore, calculating cirrus radiative impacts in GCMs requires an optical depth distribution parameterization. Radiative transfer calculations are sensitive to optical depth distribution assumptions (Fu et al. 2000; Carlin et al. 2002). Using raman lidar observations, we quantify cirrus timescales and optical depth distributions at the Atmospheric Radiation Measurement (ARM) Southern Great Plains (SGP) site in Lamont, OK (USA). We demonstrate the sensitivity of outgoing longwave radiation (OLR) calculations to assumed optical depth distributions and to the temporal resolution of optical depth measurements. Recent work has highlighted the importance of dynamics and nucleation for cirrus evolution (Haag and Karcher 2004; Karcher and Strom 2003). We need to understand the main controls on cirrus optical depth distributions to incorporate cirrus variability into model radiative transfer calculations. With an explicit ice microphysics parcel model, we aim to understand the influence of ice nucleation mechanism and imposed dynamics on cirrus optical depth distributions.

  20. Stochastic estimation of aquifer geometry using seismic refraction data with borehole depth constraints

    SciTech Connect (OSTI)

    Chen, Jinsong [Lawrence Berkeley National Laboratory (LBNL); Hubbard, Susan S [Lawrence Berkeley National Laboratory (LBNL); Korneev, V. [Lawrence Berkeley National Laboratory (LBNL); Gaines, David [University of Tennessee; Baker, Gregory S. [University of Tennessee; Watson, David [ORNL

    2010-11-01T23:59:59.000Z

    We develop a Bayesian model to invert surface seismic refraction data with depth constraints from boreholes for characterization of aquifer geometry and apply it to seismic and borehole data sets collected at the contaminated Oak Ridge National Laboratory site in Tennessee. Rather than the traditional approach of first inverting the seismic arrival times for seismic velocity and then using that information to aid in the spatial interpolation of wellbore data, we jointly invert seismic first arrival time data and wellbore based information, such as depths of key lithological boundaries. We use a staggered grid finite difference algorithm with second order accuracy in time and fourth order accuracy in space to model seismic full waveforms and use an automated method to pick the first arrival times. We use Markov Chain Monte Carlo methods to draw many samples from the joint posterior probability distribution, on which we can estimate the key interfaces and their associated uncertainty as a function of horizontal location and depth. We test the developed method on both synthetic and field case studies. The synthetic studies show that the developed method is effective at rigorous incorporation of multiscale data and the Bayesian inversion reduces uncertainty in estimates of aquifer zonation. Applications of the approach to field data, including two surface seismic profiles located 620 m apart from each other, reveal the presence of a low velocity subsurface zone that is laterally persistent. This geophysically defined feature is aligned with the plume axis, suggesting it may serve as an important regional preferential flow pathway.

  1. Variations in microbial community composition through two soil depth profiles

    E-Print Network [OSTI]

    Fierer, Noah

    35% of the total quantity of microbial biomass found in the top 2 m of soil is found below a depth: Microbial diversity; Phospholipid fatty acid; Soil profile; Community composition; Microbial biomass 1

  2. Next Generation Nuclear Plant Defense-in-Depth Approach

    SciTech Connect (OSTI)

    Edward G. Wallace; Karl N. Fleming; Edward M. Burns

    2009-12-01T23:59:59.000Z

    The purpose of this paper is to (1) document the definition of defense-in-depth and the pproach that will be used to assure that its principles are satisfied for the NGNP project and (2) identify the specific questions proposed for preapplication discussions with the NRC. Defense-in-depth is a safety philosophy in which multiple lines of defense and conservative design and evaluation methods are applied to assure the safety of the public. The philosophy is also intended to deliver a design that is tolerant to uncertainties in knowledge of plant behavior, component reliability or operator performance that might compromise safety. This paper includes a review of the regulatory foundation for defense-in-depth, a definition of defense-in-depth that is appropriate for advanced reactor designs based on High Temperature Gas-cooled Reactor (HTGR) technology, and an explanation of how this safety philosophy is achieved in the NGNP.

  3. aerosol optical depths: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AERONET, AVHRR and 3 MODIS 4 A. Hauser, D. Oesch have been used to 9 retrieve the spatial distribution of aerosol optical depth for 10 central Europe. At eight AERONET sites,...

  4. aerosol optical depth: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AERONET, AVHRR and 3 MODIS 4 A. Hauser, D. Oesch have been used to 9 retrieve the spatial distribution of aerosol optical depth for 10 central Europe. At eight AERONET sites,...

  5. Method and apparatus to measure the depth of skin burns

    DOE Patents [OSTI]

    Dickey, Fred M. (Albuquerque, NM); Holswade, Scott C. (Albuquerque, NM)

    2002-01-01T23:59:59.000Z

    A new device for measuring the depth of surface tissue burns based on the rate at which the skin temperature responds to a sudden differential temperature stimulus. This technique can be performed without physical contact with the burned tissue. In one implementation, time-dependent surface temperature data is taken from subsequent frames of a video signal from an infrared-sensitive video camera. When a thermal transient is created, e.g., by turning off a heat lamp directed at the skin surface, the following time-dependent surface temperature data can be used to determine the skin burn depth. Imaging and non-imaging versions of this device can be implemented, thereby enabling laboratory-quality skin burn depth imagers for hospitals as well as hand-held skin burn depth sensors the size of a small pocket flashlight for field use and triage.

  6. Welding arc initiator

    DOE Patents [OSTI]

    Correy, T.B.

    1989-05-09T23:59:59.000Z

    An improved inert gas shielded tungsten arc welder is disclosed of the type wherein a tungsten electrode is shielded within a flowing inert gas, and, an arc, following ignition, burns between the energized tungsten electrode and a workpiece. The improvement comprises in combination with the tungsten electrode, a starting laser focused upon the tungsten electrode which to ignite the electrode heats a spot on the energized electrode sufficient for formation of a thermionic arc. Interference problems associated with high frequency starters are thus overcome. 3 figs.

  7. Welding arc initiator

    DOE Patents [OSTI]

    Correy, Thomas B. (Richland, WA)

    1989-01-01T23:59:59.000Z

    An improved inert gas shielded tungsten arc welder is disclosed of the type wherein a tungsten electrode is shielded within a flowing inert gas, and, an arc, following ignition, burns between the energized tungsten electrode and a workpiece. The improvement comprises in combination with the tungsten electrode, a starting laser focused upon the tungsten electrode which to ignite the electrode heats a spot on the energized electrode sufficient for formation of a thermionic arc. Interference problems associated with high frequency starters are thus overcome.

  8. Case depth verification of hardened samples with Barkhausen noise sweeps

    SciTech Connect (OSTI)

    Santa-aho, Suvi; Vippola, Minnamari; Lepist, Toivo [Tampere University of Technology, Department of Materials Science, P.O. Box 589, 33101 Tampere (Finland); Hakanen, Merja [Stresstech Oy, Tikkutehtaantie 1, 40800 Vaajakoski (Finland); Sorsa, Aki; Leivisk, Kauko [University of Oulu, Control Engineering Laboratory, P.O. Box 4300, FIN-90014 University of Oulu (Finland)

    2014-02-18T23:59:59.000Z

    An interesting topic of recent Barkhausen noise (BN) method studies is the application of the method to case depth evaluation of hardened components. The utilization of BN method for this purpose is based on the difference in the magnetic properties between the hardened case and the soft core. Thus, the detection of case depth with BN can be achieved. The measurements typically have been carried out by using low magnetizing frequencies which have deeper penetration to the ferromagnetic samples than the conventional BN measurement. However, the penetration depth is limited due to eddy current damping of the signal. We introduce here a newly found sweep measurement concept for the case depth evaluation. In this study sweep measurements were carried out with various magnetizing frequencies and magnetizing voltages to detect the effect of different frequency and voltage and their correspondence to the actual case depth values verified from destructive characterization. Also a BN measurement device that has an implemented sweep analysis option was utilised. The samples were either induction or case-hardened samples and sample geometry contained both rod samples and gear axle samples with different case depth values. Samples were also further characterized with Xray diffraction to study the residual stress state of the surface. The detailed data processing revealed that also other calculated features than the maximum slope division of the 1st derivative of the BN signal could hold the information about the case depth value of the samples. The sweep method was able to arrange the axles into correct order according to the case depth value even though the axles were used.

  9. Burial depth and stratigraphic controls on shale diagenesis

    E-Print Network [OSTI]

    Moore, David Wesley

    1983-01-01T23:59:59.000Z

    - layer illite/smectite in Gulf Coast sediments at a shallow depth is a randomly-interstratified illite/smectite with proportions of 804 smectite and 20% illite (Perry and Hower, 1972). Many authors (Dunoyer de Segonzac, 1970; Perry and Hower, 1970..., 1972; Hower et al. , 1976; Foscolos and Kodama, 1974) have noted the increase in illite with concurrent decrease of smectite in the mixed-layer illite/smec- tite with increasing depth and temperature. The conversion of smectite into illite resulting...

  10. High-resolution SIMS depth profiling of nanolayers.

    SciTech Connect (OSTI)

    Baryshev, S. V.; Zinovev, A. V.; Tripa, C. E.; Pellin, M. J.; Peng, Q.; Elam, J. W.; Veryovkin, I. V. (Energy Systems); ( MSD)

    2012-10-15T23:59:59.000Z

    Although the fundamental physical limits for depth resolution of secondary ion mass spectrometry are well understood in theory, the experimental work to achieve and demonstrate them is still ongoing. We report results of high-resolution TOF SIMS (time-of-flight secondary ion mass spectrometry) depth profiling experiments on a nanolayered structure, a stack of 16 alternating MgO and ZnO {approx}5.5 nm layers grown on a Si substrate by atomic layer deposition. The measurements were performed using a newly developed approach implementing a low-energy direct current normally incident Ar{sup +} ion beam for ion milling (250 eV and 500 eV energy), in combination with a pulsed 5 keV Ar{sup +} ion beam at 60{sup o} incidence for TOF SIMS analysis. By this optimized arrangement, a noticeably improved version of the dual-beam (DB) approach to TOF SIMS depth profiling is introduced, which can be dubbed gentleDB. The mixing-roughness-information model was applied to detailed analysis of experimental results. It revealed that the gentleDB approach allows ultimate depth resolution by confining the ion beam mixing length to about two monolayers. This corresponds to the escape depth of secondary ions, the fundamental depth resolution limitation in SIMS. Other parameters deduced from the measured depth profiles indicated that a single layer thickness is equal to 6 nm so that the 'flat' layer thickness d is 3 nm and the interfacial roughness {sigma} is 1.5 nm, thus yielding d + 2{sigma} = 6 nm. We have demonstrated that gentleDB TOF SIMS depth profiling with noble gas ion beams is capable of revealing the structural features of a stack of nanolayers, resolving its original surface and estimating the roughness of interlayer interfaces, information which is difficult to obtain by traditional approaches.

  11. Colour videos with depth : acquisition, processing and evaluation

    E-Print Network [OSTI]

    Richardt, Christian

    2012-03-06T23:59:59.000Z

    . Declaration This dissertation is the result of my own work and includes nothing which is the outcome of work done in collaboration except where specifically indicated in the text. This dissertation does not exceed the regulation length of 60 000 words... -step pipeline that aligns the video streams, efficiently removes and fills invalid and noisy geometry, and finally uses a spatiotemporal filter to increase the spatial resolution of the depth data and strongly reduce depth measurement noise. I show...

  12. The viscous potential free surface flows in a moving domain of infinite depth without surface tension

    E-Print Network [OSTI]

    Yorke, James

    . It turns out that the new system is the viscous version of the water wave equations and the dissipation@cscamm.umd.edu. 1 #12;(1) The kinematic condition: We represent the free boundary by z - (x, y, t) = 0. Since (t + v

  13. Gulf Petro Initiative

    SciTech Connect (OSTI)

    Fathi Boukadi

    2011-02-05T23:59:59.000Z

    In this report, technologies for petroleum production and exploration enhancement in deepwater and mature fields are developed through basic and applied research by: (1) Designing new fluids to efficiently drill deepwater wells that can not be cost-effectively drilled with current technologies. The new fluids will be heavy liquid foams that have low-density at shallow dept to avoid formation breakdown and high density at drilling depth to control formation pressure. The goal of this project is to provide industry with formulations of new fluids for reducing casing programs and thus well construction cost in deepwater development. (2) Studying the effects of flue gas/CO{sub 2} huff n puff on incremental oil recovery in Louisiana oilfields bearing light oil. An artificial neural network (ANN) model will be developed and used to map recovery efficiencies for candidate reservoirs in Louisiana. (3) Arriving at a quantitative understanding for the three-dimensional controlled-source electromagnetic (CSEM) geophysical response of typical Gulf of Mexico hydrocarbon reservoirs. We will seek to make available tools for the qualitative, rapid interpretation of marine CSEM signatures, and tools for efficient, three-dimensional subsurface conductivity modeling.

  14. Hanford tanks initiative plan

    SciTech Connect (OSTI)

    McKinney, K.E.

    1997-07-01T23:59:59.000Z

    Abstract: The Hanford Tanks Initiative (HTI) is a five-year project resulting from the technical and financial partnership of the U.S. Department of Energy`s Office of Waste Management (EM-30) and Office of Science and Technology Development (EM-50). The HTI project accelerates activities to gain key technical, cost performance, and regulatory information on two high-level waste tanks. The HTI will provide a basis for design and regulatory decisions affecting the remainder of the Tank Waste Remediation System`s tank waste retrieval Program.

  15. UNLV Nuclear Hydrogen Initiative

    SciTech Connect (OSTI)

    Hechanova, Anthony E.; Johnson, Allen; O'Toole, Brendan; Trabia, Mohamed; Peterson, Per

    2012-10-25T23:59:59.000Z

    Evaluation of the Crack growth rate (CGR) of Alloy 617 and Alloy 276 under constant K at ambient temperature has been completed. Creep deformation of Alloy 230 at different temperature range and load level has been completed and heat to heat variation has been noticed. Creep deformation study of Alloy 276 has been completed under an applied initial stress level of 10% of yield stress at 950C. The grain size evaluation of the tested creep specimens of Alloy 276 has been completed.

  16. World Consensus Initiative 2004

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of ScienceandMesa del SolStrengtheningWildfires may contribute more toConsensus Initiative 2004 Texas

  17. Numerical Study of Geometry and Rotation Dependence on the Flow in Labyrinth Seals

    E-Print Network [OSTI]

    Yamsani, Vamshi Krishna

    2011-10-21T23:59:59.000Z

    to predict the flow field in the seal. Various clearance-pitch ratios were used to study the effect of clearance on the flow. The aspect ratio, which is defined as the pitch-height ratio was varied to study the influence of the depth of the cavity on the flow...

  18. Heat flow and subsurface temperature distributions in central and western New York. Final report

    SciTech Connect (OSTI)

    Hodge, D.S.; Fromm, K.

    1984-01-01T23:59:59.000Z

    Initiation of a geothermal energy program in western and central New York requires knowledge of subsurface temperatures for targeting areas of potential resources. The temperature distribution in possible geothermal reservoirs, calculated from heat flow measurements and modeling techniques, shows that a large area of New York can be considered for exploitation of geothermal resources. Though the temperatures at currently accessible depths show the availability of only a low-temperature (less than 100/sup 0/C), direct-use resource, this can be considered as an alternative for the future energy needs of New York State. From analysis of bottom-hole-temperature data and direct heat flow measurements, estimates of temperatures in the Cambrian Sandstones provide the basis of the economic evaluation of the reservoir. This reservoir contains the extractable fluids needed for targeting a potential geothermal well site in the low-temperature geothermal target zone. In the northern section of the Appalachian basin, reservoir temperatures in the Cambrian are below 50/sup 0/C but may be over 80/sup 0/C in the deeper parts of the basin in southern New York State. Using a minimum of 50/sup 0/C as a useful reservoir temperature, temperatures in excess of this value are encountered in the Theresa Formation at depths in excess of 1300 meters. Considering a maximum depth for economical drilling to be 2500 meters with present technology, the 2500 meters to the Theresa (sea level datum) forms the lower limit of the geothermal resource. Temperatures in the range of 70/sup 0/C to 80/sup 0/C are predicted for the southern portion of New York State.

  19. Precision flyer initiator

    DOE Patents [OSTI]

    Frank, A.M.; Lee, R.S.

    1998-05-26T23:59:59.000Z

    A precision flyer initiator forms a substantially spherical detonation wave in a high explosive (HE) pellet. An explosive driver, such as a detonating cord, a wire bridge circuit or a small explosive, is detonated. A flyer material is sandwiched between the explosive driver and an end of a barrel that contains an inner channel. A projectile or ``flyer`` is sheared from the flyer material by the force of the explosive driver and projected through the inner channel. The flyer than strikes the HE pellet, which is supported above a second end of the barrel by a spacer ring. A gap or shock decoupling material delays the shock wave in the barrel from predetonating the HE pellet before the flyer. A spherical detonation wave is formed in the HE pellet. Thus, a shock wave traveling through the barrel fails to reach the HE pellet before the flyer strikes the HE pellet. The precision flyer initiator can be used in mining devices, well-drilling devices and anti-tank devices. 10 figs.

  20. Precision flyer initiator

    DOE Patents [OSTI]

    Frank, Alan M. (Livermore, CA); Lee, Ronald S. (Livermore, CA)

    1998-01-01T23:59:59.000Z

    A precision flyer initiator forms a substantially spherical detonation wave in a high explosive (HE) pellet. An explosive driver, such as a detonating cord, a wire bridge circuit or a small explosive, is detonated. A flyer material is sandwiched between the explosive driver and an end of a barrel that contains an inner channel. A projectile or "flyer" is sheared from the flyer material by the force of the explosive driver and projected through the inner channel. The flyer than strikes the HE pellet, which is supported above a second end of the barrel by a spacer ring. A gap or shock decoupling material delays the shock wave in the barrel from predetonating the HE pellet before the flyer. A spherical detonation wave is formed in the HE pellet. Thus, a shock wave traveling through the barrel fails to reach the HE pellet before the flyer strikes the HE pellet. The precision flyer initiator can be used in mining devices, well-drilling devices and anti-tank devices.

  1. Cooling Flows or Heating Flows?

    E-Print Network [OSTI]

    James Binney

    2003-10-08T23:59:59.000Z

    It is now clear that AGN heat cooling flows, largely by driving winds. The winds may contain a relativistic component that generates powerful synchrotron radiation, but it is not clear that all winds do so. The spatial and temporal stability of the AGN/cooling flow interaction are discussed. Collimation of the winds probably provides spatial stability. Temporal stability may be possible only for black holes with masses above a critical value. Both the failure of cooling flows to have adiabatic cores and the existence of X-ray cavities confirm the importance of collimated outflows. I quantify the scale of the convective flow that the AGN Hydra would need to drive if it balanced radiative inward flow by outward flow parallel to the jets. At least in Virgo any such flow must be confined to r<~20 kpc. Hydrodynamical simulations suggest that AGN outbursts cannot last longer than ~25 Myr. Data for four clusters with well studied X-ray cavities suggests that heating associated with cavity formation approximately balances radiative cooling. The role of cosmic infall and the mechanism of filament formation are briefly touched on.

  2. Breckinridge Project, initial effort

    SciTech Connect (OSTI)

    none,

    1982-01-01T23:59:59.000Z

    Report IV, Volume 4, provides descriptions, data, and drawings pertaining to the Gas Plant (Plant 7). The Gas Plant (Plant 7) receives feed gas streams from various process plants. The Gas Plant compresses, treats, and fractionates the gas streams into intermediate and final products. The following information is included for the plant described in this volume: a description of the plant's process design, including the utility balance, catalysts and chemicals usage, and process flow diagrams; an equipment list, including item numbers and descriptions; data sheets and sketches for major plant components; and pertinent engineering drawings. An appendix contains: an overall site plan showing the locations of all plants; and the symbols and legend for the piping and instrument diagrams included in this volume.

  3. Breckinridge Project, initial effort

    SciTech Connect (OSTI)

    none,

    1982-01-01T23:59:59.000Z

    Report IV, Volume 7 provides descriptions, data, and drawings pertaining to the Oxygen Plant (Plant 15) and Naphtha Hydrotreating and Reforming (Plant 18). The Oxygen Plant (Plant 15) utilizes low-pressure air separation to manufacture the oxygen required in Gasification and Purification (Plant 12). The Oxygen Plant also supplies nitrogen as needed by the H-COAL process. Naphtha Hydrotreating and Reforming (Plant 18) upgrades the raw H-COAL naphtha. The following information is provided for both plants described in this volume: a description of the plant's process design, including the utility balance, catalysts and chemicals usage, and process flow diagrams; an equipment list including item numbers and descriptions; data sheets and sketches for major plant components (Oxygen Plant only); and pertinent engineering drawings. An appendix contains: an overall site plan showing the locations of all plants; and the symbols and legend for the piping and instrument diagrams included in this volume.

  4. Breckinridge Project, initial effort

    SciTech Connect (OSTI)

    none,

    1982-01-01T23:59:59.000Z

    Report IV, Volume 3, provides descriptions, data, and drawings pertaining to H-COAL Recycle Slurry Preparation (Plant 5), H-COAL Recycle Hydrogen Compression (Plant 6), and H-COAL Distillate Separation (Plant 17). H-COAL Recycle Slurry Preparation (Plant 5) receives a slurry stream from H-COAL Primary Separation (Plant 4), and then pumps the slurry through hydrocyclones, producing two slurry streams. One, dilute in solids is recycled back to the reactor. The other, concentrated in solids, is further processed to recover liquid products and is then transferred to Gasification and Purification (Plant 12). H-COAL Recycle Hydrogen Compression (Plant 6) compresses and recycles back to the reactor system hydrogen-rich vapor from H-COAL Primary Separation (Plant 4). This recycling maintains a hydrogen partial pressure and gas flow through the reactor vessel. H-COAL Distillate Separation (Plant 17) processes products from H-COAL Primary Separation (Plant 4) and H-COAL Recycle Slurry Preparation to produce light naphtha for the Gas Plant (Plant 7), middle and heavy distillates for tank farms, and heavy naphtha for Naphtha Hydrotreating and Reforming (Plant 18). The following information is included for each of the three plants: a description of the plant's process design, including the utility balance, heat and material balance (if applicable), and a process flow diagram; an equipment list, including item numbers and descriptions; data sheets and sketches for major plant components; and pertinent engineering drawings. An appendix contains: an overall site plan showing the locations of all plants; and the symbols and legend for the piping and instrument diagrams included in this volume.

  5. Global helioseismic evidence for a deeply penetrating Solar meridional flow consisting of multiple flow cells

    E-Print Network [OSTI]

    Schad, A; Roth, M

    2013-01-01T23:59:59.000Z

    We use a novel global helioseismic analysis method to infer the meridional flow in the deep Solar interior. The method is based on the perturbation of eigenfunctions of Solar p modes due to meridional flow. We apply this method to time series obtained from Dopplergrams measured by the Michelson Doppler Imager aboard the Solar and Heliospheric Observatory (SOHO) covering the observation period 2004-2010. Our results show evidence that the meridional flow reaches down to the base of the convection zone. The flow profile has a complex spatial structure consisting of multiple flow cells distributed in depth and latitude. Toward the Solar surface, our results are in good agreement with flow measurements from local helioseismology.

  6. Measuring depth profiles of residual stress with Raman spectroscopy

    SciTech Connect (OSTI)

    Enloe, W.S.; Sparks, R.G.; Paesler, M.A.

    1988-12-01T23:59:59.000Z

    Knowledge of the variation of residual stress is a very important factor in understanding the properties of machined surfaces. The nature of the residual stress can determine a part`s susceptibility to wear deformation, and cracking. Raman spectroscopy is known to be a very useful technique for measuring residual stress in many materials. These measurements are routinely made with a lateral resolution of 1{mu}m and an accuracy of 0.1 kbar. The variation of stress with depth; however, has not received much attention in the past. A novel technique has been developed that allows quantitative measurement of the variation of the residual stress with depth with an accuracy of 10nm in the z direction. Qualitative techniques for determining whether the stress is varying with depth are presented. It is also demonstrated that when the stress is changing over the volume sampled, errors can be introduced if the variation of the stress with depth is ignored. Computer aided data analysis is used to determine the depth dependence of the residual stress.

  7. European Journal of Mechanics B/Fluids 25 (2006) 9871007 Wave propagation in a fluid flowing through

    E-Print Network [OSTI]

    Pontrelli, Giuseppe

    2006-01-01T23:59:59.000Z

    oscillatory flow has been considered in many studies. This work was initiated by Lyne [5] who used boundary-layer

  8. Instrumented Pipeline Initiative

    SciTech Connect (OSTI)

    Thomas Piro; Michael Ream

    2010-07-31T23:59:59.000Z

    This report summarizes technical progress achieved during the cooperative agreement between Concurrent Technologies Corporation (CTC) and U.S. Department of Energy to address the need for a for low-cost monitoring and inspection sensor system as identified in the Department of Energy (DOE) National Gas Infrastructure Research & Development (R&D) Delivery Reliability Program Roadmap.. The Instrumented Pipeline Initiative (IPI) achieved the objective by researching technologies for the monitoring of pipeline delivery integrity, through a ubiquitous network of sensors and controllers to detect and diagnose incipient defects, leaks, and failures. This report is organized by tasks as detailed in the Statement of Project Objectives (SOPO). The sections all state the objective and approach before detailing results of work.

  9. Critical discharge of initially subcooled water through slits. [PWR; BWR

    SciTech Connect (OSTI)

    Amos, C N; Schrock, V E

    1983-09-01T23:59:59.000Z

    This report describes an experimental investigation into the critical flow of initially subcooled water through rectangular slits. The study of such flows is relevant to the prediction of leak flow rates from cracks in piping, or pressure vessels, which contain sufficient enthalpy that vaporization will occur if they are allowed to expand to the ambient pressure. Two new analytical models, which allow for the generation of a metastable liquid phase, are developed. Experimental results are compared with the predictions of both these new models and with a Fanno Homogeneous Equilibrium Model.

  10. Arc initiation in cathodic arc plasma sources

    DOE Patents [OSTI]

    Anders, Andre (Albany, CA)

    2002-01-01T23:59:59.000Z

    A "triggerless" arc initiation method and apparatus is based on simply switching the arc supply voltage to the electrodes (anode and cathode). Neither a mechanical trigger electrode nor a high voltage flashover from a trigger electrode is required. A conducting path between the anode and cathode is provided, which allows a hot spot to form at a location where the path connects to the cathode. While the conductive path is eroded by the cathode spot action, plasma deposition ensures the ongoing repair of the conducting path. Arc initiation is achieved by simply applying the relatively low voltage of the arc power supply, e.g. 500 V-1 kV, with the insulator between the anode and cathode coated with a conducting layer and the current at the layer-cathode interface concentrated at one or a few contact points. The local power density at these contact points is sufficient for plasma production and thus arc initiation. A conductive surface layer, such as graphite or the material being deposited, is formed on the surface of the insulator which separates the cathode from the anode. The mechanism of plasma production (and arc initiation) is based on explosive destruction of the layer-cathode interface caused by joule heating. The current flow between the thin insulator coating and cathode occurs at only a few contact points so the current density is high.

  11. Shock Initiation of Damaged Explosives

    SciTech Connect (OSTI)

    Chidester, S K; Vandersall, K S; Tarver, C M

    2009-10-22T23:59:59.000Z

    Explosive and propellant charges are subjected to various mechanical and thermal insults that can increase their sensitivity over the course of their lifetimes. To quantify this effect, shock initiation experiments were performed on mechanically and thermally damaged LX-04 (85% HMX, 15% Viton by weight) and PBX 9502 (95% TATB, 5% Kel-F by weight) to obtain in-situ manganin pressure gauge data and run distances to detonation at various shock pressures. We report the behavior of the HMX-based explosive LX-04 that was damaged mechanically by applying a compressive load of 600 psi for 20,000 cycles, thus creating many small narrow cracks, or by cutting wedge shaped parts that were then loosely reassembled, thus creating a few large cracks. The thermally damaged LX-04 charges were heated to 190 C for long enough for the beta to delta solid - solid phase transition to occur, and then cooled to ambient temperature. Mechanically damaged LX-04 exhibited only slightly increased shock sensitivity, while thermally damaged LX-04 was much more shock sensitive. Similarly, the insensitive explosive PBX 9502 was mechanically damaged using the same two techniques. Since PBX 9502 does not undergo a solid - solid phase transition but does undergo irreversible or 'rachet' growth when thermally cycled, thermal damage to PBX 9502 was induced by this procedure. As for LX-04, the thermally damaged PBX 9502 demonstrated a greater shock sensitivity than mechanically damaged PBX 9502. The Ignition and Growth reactive flow model calculated the increased sensitivities by igniting more damaged LX-04 and PBX 9502 near the shock front based on the measured densities (porosities) of the damaged charges.

  12. Focal depth measurement of scanning helium ion microscope

    SciTech Connect (OSTI)

    Guo, Hongxuan, E-mail: Guo.hongxuan@nims.go.jp [Global Research Center for Environment and Energy based on Nanomaterials Science, National Institute for Materials Science (NIMS), 1-2-1 Sengen, Tsukuba, Ibaraki 305-0047 (Japan); Itoh, Hiroshi; Wang, Chunmei [Active State Technology Research Group, Research Institute of Instrumentation Frontier, National Institute of Advanced Industrial Science and Technology (AIST), 1-1 Umezono 1-Chome, Tsukuba, Ibaraki 305-8568 (Japan); Zhang, Han; Fujita, Daisuke [Nano Characterization Unit, Advanced Key Technologies Division, National Institute for Materials Science (NIMS), 1-2-1 Sengen, Tsukuba, Ibaraki 305-0047 (Japan)

    2014-07-14T23:59:59.000Z

    When facing the challenges of critical dimension measurement of complicated nanostructures, such as of the three dimension integrated circuit, characterization of the focal depth of microscopes is important. In this Letter, we developed a method for characterizing the focal depth of a scanning helium ion microscope (HIM) by using an atomic force microscope tip characterizer (ATC). The ATC was tilted in a sample chamber at an angle to the scanning plan. Secondary electron images (SEIs) were obtained at different positions of the ATC. The edge resolution of the SEIs shows the nominal diameters of the helium ion beam at different focal levels. With this method, the nominal shapes of the helium ion beams were obtained with different apertures. Our results show that a small aperture is necessary to get a high spatial resolution and high depth of field images with HIM. This work provides a method for characterizing and improving the performance of HIM.

  13. Flow tests of the Gladys McCall well. Appendix A, Gladys McCall Site (Cameron Parish, LA): Final report, October 1985--October 1990

    SciTech Connect (OSTI)

    Randolph, P.L.; Hayden, C.G.; Rogers, L.A. [Institute of Gas Technology, Chicago, IL (United States)

    1992-04-01T23:59:59.000Z

    This report pulls together the data from all of the geopressured-geothermal field research conducted at the Gladys McCall well. The well produced geopressured brine containing dissolved natural gas from the Lower Miocene sands at a depth of 15,150 to 16,650 feet. More than 25 million barrels of brine and 727 million standard cubic feet of natural gas were produced in a series of flow tests between December 1982 and October 1987 at various brine flow rates up to 28,000 barrels per day. Initial short-term flow tests for the Number 9 Sand found the permeability to be 67 to 85 md (millidarcies) for a brine volume of 85 to 170 million barrels. Initial short-term flow tests for the Number 8 Sand found a permeability of 113 to 132 md for a reservoir volume of 430 to 550 million barrels of brine. The long-term flow and buildup test of the Number 8 Sand found that the high-permeability reservoir connected to the wellbore (measured by the short-term flow test) was connected to a much larger, low-permeability reservoir. Numerical simulation of the flow and buildup tests required this large connected reservoir to have a volume of about 8 billion barrels (two cubic miles of reservoir rock) with effective permeabilities in the range of 0.2 to 20 md. Calcium carbonate scale formation in the well tubing and separator equipment was a problem. During the first 2 years of production, scale formation was prevented in the surface equipment by injection of an inhibitor upstream of the choke. Starting in 1985, scale formation in the production tubing was successfully prevented by injecting inhibitor ``pills`` directly into the reservoir. Corrosion and/or erosion of surface piping and equipment, as well as disposal well tubing, was also significant.

  14. Breckinridge Project, initial effort

    SciTech Connect (OSTI)

    none,

    1982-01-01T23:59:59.000Z

    Report IV, Volume 5, provides descriptions, data, and drawings pertaining to Cryogenic Hydrogen Purification (Plant 8), Sour Water Treating (Plant 9), and the Sulfur Plant (Plant 10). Cryogenic Hydrogen Purification (Plant 8) purifies the purge gas stream from the Gas Plant (Plant 7, described in Report IV, Volume 4) to a 93% purity hydrogen product. Sour Water Treating (Plant 9) removes free ammonia and acid gases from sour water and separates them to recover a high quality anhydrous ammonia product. The Sulfur Plant (Plant 10) recovers, as a saleable liquid product, approximately 95% of the sulfur in feed streams from the Gas Plant (Plant 7, described in Report IV, Volume 4), Sour Water Treating (Plant 9), Gasification and Purification (Plant 12, described in Report IV, Volume 6), and Stack Gas Scrubbing (Plant 35, described in Report V, Volume 3). The following information is included for each of the three plants described in this volume: a description of the plant's process design, including the utility balance, catalysts and chemicals usage, and a process flow diagram; an equipment list, including item numbers and descriptions; data sheets and sketches for major plant components; and pertinent engineering drawings. An appendix contains: an overall site plan showing the locations of all plants; and the symbols and legend for the piping and instrument diagrams included in this volume.

  15. Sustainable Forest Bioenergy Initiative

    SciTech Connect (OSTI)

    Breger, Dwayne; Rizzo, Rob

    2011-09-20T23:59:59.000Z

    In the states Electricity Restructuring Act of 1998, the Commonwealth of Massachusetts recognized the opportunity and strategic benefits to diversifying its electric generation capacity with renewable energy. Through this legislation, the Commonwealth established one of the nations first Renewable Energy Portfolio Standard (RPS) programs, mandating the increasing use of renewable resources in its energy mix. Bioenergy, meeting low emissions and advanced technology standards, was recognized as an eligible renewable energy technology. Stimulated by the states RPS program, several project development groups have been looking seriously at building large woody biomass generation units in western Massachusetts to utilize the woody biomass resource. As a direct result of this development, numerous stakeholders have raised concerns and have prompted the state to take a leadership position in pursuing a science based analysis of biomass impacts on forest and carbon emissions, and proceed through a rulemaking process to establish prudent policy to support biomass development which can contribute to the states carbon reduction commitments and maintain safeguards for forest sustainability. The Massachusetts Sustainable Forest Bioenergy Initiative (SFBI) was funded by the Department of Energy and started by the Department of Energy Resources before these contentious biomass issues were fully raised in the state, and continued throughout the substantive periods of this policy development. Thereby, while SFBI maintained its focus on the initially proposed Scope of Work, some aspects of this scope were expanded or realigned to meet the needs for groundbreaking research and policy development being advanced by DOER. SFBI provided DOER and the Commonwealth with a foundation of state specific information on biomass technology and the biomass industry and markets, the most comprehensive biomass fuel supply assessment for the region, the economic development impact associated with biomass usage, an understanding of forest management trends including harvesting and fuel processing methods, and the carbon profile of utilizing forest based woody biomass for the emerging biomass markets. Each of the tasks and subtasks have provided an increased level of understanding to support new directives, policies and adaptation of existing regulations within Massachusetts. The project has provided the essential information to allow state policymakers and regulators to address emerging markets, while ensuring forest sustainability and understanding the complex science on CO2 accounting and impacts as a result of biomass harvesting for power generation. The public at large and electricity ratepayers in Massachusetts will all benefit from the information garnered through this project. This is a result of the states interest to provide financial incentives to only biomass projects that demonstrate an acceptable carbon profile, an efficient use of the constrained supply of fuel, and the harvest of biomass to ensure forest sustainability. The goals of the Massachusetts Sustainable Forest Bioenergy Initiative as proposed in 2006 were identified as: increase the diversity of the Massachusetts energy mix through biomass; promote economic development in the rural economy through forest industry job creation; help fulfill the states energy and climate commitments under the Renewable Energy Portfolio Standard and Climate Protection Plan; assist the development of a biomass fuel supply infrastructure to support energy project demands; provide education and outreach to the public on the benefits and impacts of bioenergy; improve the theory and practice of sustainable forestry in the Commonwealth. Completed project activities summarized below will demonstrate the effectiveness of the project in meeting the above goals. In addition, as discussed above, Massachusetts DOER needed to make some modifications to its work plan and objectives during the term of this project due to changing public policy demands brought forth in the course of the public discours

  16. MONTANA PALLADIUM RESEARCH INITIATIVE

    SciTech Connect (OSTI)

    Peters, John

    2012-05-09T23:59:59.000Z

    Project Objective: The overarching objective of the Montana Palladium Research Initiative is to perform scientific research on the properties and uses of palladium in the context of the U.S. Department of Energy'????????????????s Hydrogen, Fuel Cells and Infrastructure Technologies Program. The purpose of the research will be to explore possible palladium as an alternative to platinum in hydrogen-economy applications. To achieve this objective, the Initiatives activities will focus on several cutting-edge research approaches across a range of disciplines, including metallurgy, biomimetics, instrumentation development, and systems analysis. Background: Platinum-group elements (PGEs) play significant roles in processing hydrogen, an element that shows high potential to address this need in the U.S. and the world for inexpensive, reliable, clean energy. Platinum, however, is a very expensive component of current and planned systems, so less-expensive alternatives that have similar physical properties are being sought. To this end, several tasks have been defined under the rubric of the Montana Palladium Research Iniative. This broad swath of activities will allow progress on several fronts. The membrane-related activities of Task 1 employs state-of-the-art and leading-edge technologies to develop new, ceramic-substrate metallic membranes for the production of high-purity hydrogen, and develop techniques for the production of thin, defect-free platinum group element catalytic membranes for energy production and pollution control. The biomimetic work in Task 2 explores the use of substrate-attached hydrogen-producing enzymes and the encapsulation of palladium in virion-based protein coats to determine their utility for distributed hydrogen production. Task 3 work involves developing laser-induced breakdown spectroscopy (LIBS) as a real-time, in situ diagnostic technique to characterize PGEs nanoparticles for process monitoring and control. The systems engineering work in task 4 will determine how fuel cells ????????????????taken as systems behave over periods of time that should show how their reformers and other subsystems deteriorate with time.

  17. An Investigation of Hydrogen Depth Profiling Using ToF-SIMS....

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Investigation of Hydrogen Depth Profiling Using ToF-SIMS. An Investigation of Hydrogen Depth Profiling Using ToF-SIMS. Abstract: Hydrogen depth distributions in silicon, zinc oxide...

  18. Structural Performance of a Full-Depth Precast Concrete Bridge Deck System

    E-Print Network [OSTI]

    Mander, Thomas

    2010-10-12T23:59:59.000Z

    -depth concrete bridge deck overhangs, accelerating the construction of concrete bridge decks, by using full-depth precast prestressed concrete deck panels. Full-depth precast overhang panels in combination with cast-in-place (CIP) reinforced concrete...

  19. Woodland Park Healthy Forest Initiative

    E-Print Network [OSTI]

    March 2010 Woodland Park Healthy Forest Initiative Collaboration Case Study #12;Woodland Park Healthy Forest Initiative 1 1 Colorado Forest Restoration Institute Collaboration Case Study: Woodland at Colorado State University, to conduct case studies of two collaborative forest health efforts

  20. Digital Library Initiative Rice University

    E-Print Network [OSTI]

    Digital Library Initiative Rice University Project Management General guidelines for digital projects Contact: dli (at) rice (dot) edu October, 2007 #12;Digital Library Initiative, Rice University................................................................................................8 #12;Guidelines for managing digital projects Page 2 STATEMENT OF PURPOSE We recognized

  1. Self-similar expanding solutions for the planar network flow

    E-Print Network [OSTI]

    Mazzeo, Rafe

    Self-similar expanding solutions for the planar network flow Rafe Mazzeo Stanford University-similar expanding solutions of the cur- vature flow on planar networks where the initial configuration is any num generally, one might consider the flow by curvature for net- works of curves. Definition 1.1. A planar

  2. Oklahoma GSHP Initiative Jim Bullington

    E-Print Network [OSTI]

    10/1/2012 1 Oklahoma GSHP Initiative Jim Bullington Trade & Industrial Education Oklahoma the Oklahoma CareerTech GSHP Initiative Model Provide my contact information for you to share with your and Technical Education Encourage you to contact them to get an initiative rolling Who is Oklahoma Career

  3. Breckinridge Project, initial effort

    SciTech Connect (OSTI)

    none,

    1982-01-01T23:59:59.000Z

    Report V, Volume 1 provides descriptions, data, and drawings pertaining to Flare System (Plant 19), Tankage (Plant 20), Interconnecting Piping (Plant 21), River Facilities (Plant 22), Rail, Truck, Pipeline (Plant 23), and Electrical Distribution (Plant 30). Flare System (Plant 19) provides primary and auxiliary flare systems for safe collection and disposal of overpressure relief discharges, and operational and emergency venting of flammable vapors and liquids from the various processing plants and loading facilities. Tankage (Plant 20) provides storage for propane and heavier liquid hydrocarbon products, as well as for by-product ammonia, phenols, and liquid sulfur. Interconnecting Piping (Plant 21) includes the fuel gas blending and distribution system and the interconnecting process and utility piping between process plants and offsites. River Facilities (Plant 22) provides the loading of liquid products and by-products into barges for marine surface transportation, and the unloading of coal from barges. Rail, Truck, Pipeline (Plant 23) provides loading and unloading of products shipped by either rail or truck. Electrical Distribution (Plant 30) receives main utility power from the Big River Electric Corporation and distributes the power to the other plants. The following information is included for each of the six plants: a description of the plant's design, including the utility balance, catalysts and chemicals usage, and process flow diagrams, as applicable; an equipment list, including item numbers and descriptions; data sheets and sketches for major plant components; and pertinent engineering drawings. An appendix contains: an overall site plan showing the locations of all plants; and the symbols and legend for piping and instrument diagrams.

  4. Effect of circumferential groove casing treatment parameters on axial compressor flow range

    E-Print Network [OSTI]

    Hanley, Brian K. (Brian Kyle)

    2010-01-01T23:59:59.000Z

    The impact on compressor flow range of circumferential casing grooves of varying groove depth, groove axial location, and groove axial extent is assessed against that of a smooth casing wall using computational experiments. ...

  5. IST EPFL Joint doctoral Initiative Thesis Topic Proposal Form

    E-Print Network [OSTI]

    Instituto de Sistemas e Robotica

    IST ­ EPFL Joint doctoral Initiative Thesis Topic Proposal Form TITLE: Blocking probability. Keywords: Blocking probability; Dam safety; Discharge capacity; Driftwood; Spillway. SUPERVISORS IST: Jorge block and thereby reduce the open flow area for water passage. The blocking generated by woody debris

  6. Mobile Robot Obstacle Avoidance Via Depth From Focus

    E-Print Network [OSTI]

    Tomasi, Carlo

    Abstract A critical challenge in the creation of autonomous mobile robots is the reliable detection radiation such as direct sunlight. In contrast, vision systems are passive and can provide lateral and depth market. However, our particular embodiment of this concept is remarkable because our focus-based system

  7. WaveCurrent Interactions in Finite Depth JEROME A. SMITH

    E-Print Network [OSTI]

    Smith, Jerome A.

    Wave­Current Interactions in Finite Depth JEROME A. SMITH Scripps Institution of Oceanography, La (Longuet-Higgins 1969; Hasselmann 1971; Garrett and Smith 1976; and many others). In particular, Hassel) changes in wave momentum that absorb some of the radiation stress gradients. Garrett and Smith (1976

  8. Continuous Snow Depth, Intensive Site 1, Barrow, Alaska

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Cable, William; Romanovsky, Vladimir; Hinzman, Larry; Busey, Bob

    Continuous Snow depth data are being collected at several points within four intensive study areas in Barrow, Alaska. These data are being collected to better understand the energy dynamics above the active layer and permafrost. They complement in-situ snow and soil measurements at this location. The data could also be used as supporting measurements for other research and modeling activities.

  9. Correction to Hyperspectral Aerosol Optical Depths from TCAP Flights

    SciTech Connect (OSTI)

    Shinozuka, Yohei; Johnson, Roy R.; Flynn, Connor J.; Russell, P. B.; Schmid, Beat; Redemann, Jens; Dunagan, Stephen; Kluzek, Celine D.; Hubbe, John M.; Segal-Rosenheimer, Michal; Livingston, J. M.; Eck, T.; Wagener, Richard; Gregory, L.; Chand, Duli; Berg, Larry K.; Rogers, Ray; Ferrare, R. A.; Hair, John; Hostetler, Chris A.; Burton, S. P.

    2014-02-16T23:59:59.000Z

    In the paper Hyperspectral aerosol optical depths from TCAP flights by Y. Shinozuka et al. (Journal of Geophysical Research: Atmospheres, 118, doi:10.1002/2013JD020596, 2013), Tables 1 and 2 were published with the column heads out of order. Tables 1 and 2 are published correctly here. The publisher regrets the error.

  10. Wave-current interaction in water of finite depth

    E-Print Network [OSTI]

    Huang, Zhenhua, 1967-

    2004-01-01T23:59:59.000Z

    In this thesis, the nonlinear interaction of waves and current in water of finite depth is studied. Wind is not included. In the first part, a 2D theory for the wave effect on a turbulent current over rough or smooth bottom ...

  11. 7 Predictive Risk Mapping of Water Table Depths in

    E-Print Network [OSTI]

    Camara, Gilberto

    , and so risks of water shortage appear. The preservation of these resources is important because73 7 Predictive Risk Mapping of Water Table Depths in a Brazilian Cerrado Area R. L. Manzione, M metabolize throughout the year, drawing on soil water reserves, and can withstand short-lived fires. contents

  12. In-Depth Temperature Profiles in Pyrolyzing Wood

    E-Print Network [OSTI]

    Reszka, Pedro

    of experimental in-depth temperature measurements were done in wood samples exposed to various intensities of radiant heat fluxes, with clearly defined boundary conditions that allow a proper input for pyrolysis models. The imposed heat fluxes range from 10 k...

  13. PROOF COMPLEXITY IN ALGEBRAIC SYSTEMS AND BOUNDED DEPTH FREGE

    E-Print Network [OSTI]

    Sgall, Jiri

    PROOF COMPLEXITY IN ALGEBRAIC SYSTEMS AND BOUNDED DEPTH FREGE SYSTEMS WITH MODULAR COUNTING S. Buss () := minfjj : f() = g; #12; 2 S. Buss et al. where jj is the length of the string to showing that NP 6= coNP . Despite extensive research (see the expository articles Buss (1995b) , Kraj

  14. accurate hydrogen depth: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    accurate hydrogen depth First Page Previous Page 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Next Page Last Page Topic Index 1 Accurate reconstruction of the...

  15. Initial Cladding Condition

    SciTech Connect (OSTI)

    E. Siegmann

    2000-08-22T23:59:59.000Z

    The purpose of this analysis is to describe the condition of commercial Zircaloy clad fuel as it is received at the Yucca Mountain Project (YMP) site. Most commercial nuclear fuel is encased in Zircaloy cladding. This analysis is developed to describe cladding degradation from the expected failure modes. This includes reactor operation impacts including incipient failures, potential degradation after reactor operation during spent fuel storage in pool and dry storage and impacts due to transportation. Degradation modes include cladding creep, and delayed hydride cracking during dry storage and transportation. Mechanical stresses from fuel handling and transportation vibrations are also included. This Analysis and Model Report (AMR) does not address any potential damage to assemblies that might occur at the YMP surface facilities. Ranges and uncertainties have been defined. This analysis will be the initial boundary condition for the analysis of cladding degradation inside the repository. In accordance with AP-2.13Q, ''Technical Product Development Planning'', a work plan (CRWMS M&O 2000c) was developed, issued, and utilized in the preparation of this document. There are constraints, caveats and limitations to this analysis. This cladding degradation analysis is based on commercial Pressurized Water Reactor (PWR) fuel with Zircaloy cladding but is applicable to Boiling Water Reactor (BWR) fuel. Reactor operating experience for both PWRs and BWRs is used to establish fuel reliability from reactor operation. It is limited to fuel exposed to normal operation and anticipated operational occurrences (i.e. events which are anticipated to occur within a reactor lifetime), and not to fuel that has been exposed to severe accidents. Fuel burnup projections have been limited to the current commercial reactor licensing environment with restrictions on fuel enrichment, oxide coating thickness and rod plenum pressures. The information provided in this analysis will be used in evaluating the post-closure performance of the Monitored Geologic Repository (MGR) in relation to waste form degradation.

  16. Heat-flow reconnaissance of the Gulf Coastal Plain

    SciTech Connect (OSTI)

    Smith, D.L.; Shannon, S.S. Jr.

    1982-04-01T23:59:59.000Z

    Most of the 46 new values of heat flow determined for the Gulf Coastal Plain are in the low to normal range, but heat-flow values averaging 1.8 heat-flow unit (HFU) were obtained in Claiborne, Ouachita, and Union parishes, Louisiana. Moreover, a zone of relatively high heat-flow values and steep thermal gradients (35 to 46/sup 0/C/km) extends from northern Louisiana into southwestern Mississippi. Also near Pensacola, Florida, temperatures of 50/sup 0/C at 1-km depth have been extrapolated from thermal gradients. Future development of low-grade geothermal resources may be warranted in these areas.

  17. Report on the Depth Requirements for a Massive Detector at Homestake

    SciTech Connect (OSTI)

    Kadel, Richard W.; Bernstein, Adam; Blucher, Edward; Cline, David B.; Diwan, Milind V.; Fleming, Bonnie; Kearns, Edward; Klein, Joshua; Lande, Kenneth; Lanni, Francesco; Lissauer, David; McKeown, Robert; Morse, William; Rameika, Regina; Scholberg, Kate; Smy, Michael; Sobel, Henry; Sullivan, Gregory; Svoboda, Robert; Vagins, Mark; Walter, Christopher; Zwaska, Robert

    2008-12-23T23:59:59.000Z

    This report provides the technical justification for locating a large detector underground in a US based Deep Underground Science and Engineering Laboratory. A large detector with a fiducial mass greater than 100 kTon will most likely be a multipurpose facility. The main physics justification for such a device is detection of accelerator generated neutrinos, nucleon decay, and natural sources of neutrinos such as solar, atmospheric and supernova neutrinos. The requirement on the depth of this detector will be guided by the rate of signals from these sources and the rate of backgrounds from cosmic rays over a very wide range of energies (from solar neutrino energies of 5 MeV to high energies in the range of hundreds of GeV). For the present report, we have examined the depth requirement for a large water Cherenkov detector and a liquid argon time projection chamber. There has been extensive previous experience with underground water Cherenkov detectors such as IMB, Kamioka, and most recently, Super-Kamiokande which has a fiducial mass of 22 kTon and a total mass of 50 kTon at a depth of 2700 meters-water-equivalent in a mountain. Projections for signal and background capability for a larger and deeper(or shallower) detectors of this type can be scaled from these previous detectors. The liquid argon time projection chamber has the advantage of being a very fine-grained tracking detector, which should provide enhanced capability for background rejection. We have based background rejection on reasonable estimates of track and energy resolution, and in some cases scaled background rates from measurements in water. In the current work we have taken the approach that the depth should be sufficient to suppress the cosmogenic background below predicted signal rates for either of the above two technologies. Nevertheless, it is also clear that the underground facility that we are examining must have a long life and will most likely be used either for future novel uses of the currently planned detectors or new technologies. Therefore the depth requirement also needs to be made on the basis of sound judgment regarding possible future use. In particular, the depth should be sufficient for any possible future use of these cavities or the level which will be developed for these large structures.Along with these physics justifications there are practical issues regarding the existing infrastructure at Homestake and also the stress characteristics of the Homestake rock formations. In this report we will examine the various depth choices at Homestake from the point of view of the particle and nuclear physics signatures of interest. We also have sufficient information about the existing infrastructure and the rock characteristics to narrow the choice of levels for the development of large cavities with long lifetimes. We make general remarks on desirable ground conditions for such large cavities and then make recommendations on how to start examining these levels to make a final choice. In the appendix we have outlined the initial requirements for the detectors. These requirements will undergo refinement during the course of the design. Finally, we strongly recommend that the geotechnical studies be commenced at the 4850 ft level, which we find to be the most suitable, in a timely manner.

  18. Report on the Depth Requirements for a Massive Detector at Homestake

    SciTech Connect (OSTI)

    Bernstein,A.; Blucher, E.; Cline, D. B.; Diwan, M. V.; Fleming, b.; Kadel, R.; Kearns, E.; Klein, J.; Lande, K.; Lanni, F.; Lissauer, D.; McKeown, R.; Morse, W.; Radeika, R.; Scholberg, K.; Smy, M.; Sobel, H.; Sullivan, G.; Svoboda, R.; Vagins, M.; Walter, C.; Zwaska, R.

    2008-12-22T23:59:59.000Z

    This report provides the technical justification for locating a large detector underground in a US based Deep Underground Science and Engineering Laboratory. A large detector with a fiducial mass greater than 100 kTon will most likely be a multipurpose facility. The main physics justification for such a device is detection of accelerator generated neutrinos, nucleon decay, and natural sources of neutrinos such as solar, atmospheric and supernova neutrinos. The requirement on the depth of this detector will be guided by the rate of signals from these sources and the rate of backgrounds from cosmic rays over a very wide range of energies (from solar neutrino energies of 5 MeV to high energies in the range of tens of GeV). For the present report, we have examined the depth requirement for a large water Cherenkov detector and a liquid argon time projection chamber. There has been extensive previous experience with underground water Cherenkov detectors such as IMB, Kamioka, and most recently, Super-Kamiokande which has a fiducial mass of 22 kTon and a total mass of 50 kTon at a depth of 2700 meters-water-equivalent. Projections for signal and background capability for a larger and deeper (or shallower) detectors of this type can be scaled from these previous detectors. The liquid argon time projection chamber has the advantage of being a very fine-grained tracking detector, which provides enhanced capability for background rejection. In the current work we have taken the approach that the depth should be sufficient to suppress the cosmogenic background below predicted signal rates for either of the above two technologies. Nevertheless, it is also clear that the underground facility that we are examining must have a long life and will most likely be used either for future novel uses of the currently planned detectors or new technologies. Therefore the depth requirement also needs to be made on the basis of sound judgment regarding possible future use. In particular, the depth should be sufficient for any possible future use of these cavities or the level which will be developed for these large structures. Along with these physics justifications there are practical issues regarding the existing infrastructure at Homestake and also the stress characteristics of the Homestake rock formations. In this report we will examine the various depth choices at Homestake from the point of view of the particle and nuclear physics signatures of interest. We also have sufficient information about the existing infrastructure and the rock characteristics to narrow the choice of levels for the development of large cavities with long lifetimes. We make general remarks on desirable ground conditions for such large cavities and then make recommendations on how to start examining these levels to make a final choice. In the appendix we have outlined the initial requirements for the detectors. These requirements will undergo refinement during the course of the design. Finally, we strongly recommend that the geotechnical studies be commenced at the 4850 ft level, which we find to be the most suitable, in a timely manner.

  19. Florida Hydrogen Initiative

    SciTech Connect (OSTI)

    Block, David L

    2013-06-30T23:59:59.000Z

    The Florida Hydrogen Initiative (FHI) was a research, development and demonstration hydrogen and fuel cell program. The FHI program objectives were to develop Florida?s hydrogen and fuel cell infrastructure and to assist DOE in its hydrogen and fuel cell activities The FHI program funded 12 RD&D projects as follows: Hydrogen Refueling Infrastructure and Rental Car Strategies -- L. Lines, Rollins College This project analyzes strategies for Florida's early stage adaptation of hydrogen-powered public transportation. In particular, the report investigates urban and statewide network of refueling stations and the feasibility of establishing a hydrogen rental-car fleet based in Orlando. Methanol Fuel Cell Vehicle Charging Station at Florida Atlantic University ? M. Fuchs, EnerFuel, Inc. The project objectives were to design, and demonstrate a 10 kWnet proton exchange membrane fuel cell stationary power plant operating on methanol, to achieve an electrical energy efficiency of 32% and to demonstrate transient response time of less than 3 milliseconds. Assessment of Public Understanding of the Hydrogen Economy Through Science Center Exhibits, J. Newman, Orlando Science Center The project objective was to design and build an interactive Science Center exhibit called: ?H2Now: the Great Hydrogen Xchange?. On-site Reformation of Diesel Fuel for Hydrogen Fueling Station Applications ? A. Raissi, Florida Solar Energy Center This project developed an on-demand forecourt hydrogen production technology by catalytically converting high-sulfur hydrocarbon fuels to an essentially sulfur-free gas. The removal of sulfur from reformate is critical since most catalysts used for the steam reformation have limited sulfur tolerance. Chemochromic Hydrogen Leak Detectors for Safety Monitoring ? N. Mohajeri and N. Muradov, Florida Solar Energy Center This project developed and demonstrated a cost-effective and highly selective chemochromic (visual) hydrogen leak detector for safety monitoring at any facility engaged in transport, handling and use of hydrogen. Development of High Efficiency Low Cost Electrocatalysts for Hydrogen Production and PEM Fuel Cell Applications ? M. Rodgers, Florida Solar Energy Center The objective of this project was to decrease platinum usage in fuel cells by conducting experiments to improve catalyst activity while lowering platinum loading through pulse electrodeposition. Optimum values of several variables during electrodeposition were selected to achieve the highest electrode performance, which was related to catalyst morphology. Understanding Mechanical and Chemical Durability of Fuel Cell Membrane Electrode Assemblies ? D. Slattery, Florida Solar Energy Center The objective of this project was to increase the knowledge base of the degradation mechanisms for membranes used in proton exchange membrane fuel cells. The results show the addition of ceria (cerium oxide) has given durability improvements by reducing fluoride emissions by an order of magnitude during an accelerated durability test. Production of Low-Cost Hydrogen from Biowaste (HyBrTec?) ? R. Parker, SRT Group, Inc., Miami, FL This project developed a hydrogen bromide (HyBrTec?) process which produces hydrogen bromide from wet-cellulosic waste and co-produces carbon dioxide. Eelectrolysis dissociates hydrogen bromide producing recyclable bromine and hydrogen. A demonstration reactor and electrolysis vessel was designed, built and operated. Development of a Low-Cost and High-Efficiency 500 W Portable PEMFC System ? J. Zheng, Florida State University, H. Chen, Bing Energy, Inc. The objectives of this project were to develop a new catalyst structures comprised of highly conductive buckypaper and Pt catalyst nanoparticles coated on its surface and to demonstrate fuel cell efficiency improvement and durability and cell cost reductions in the buckypaper based electrodes. Development of an Interdisciplinary Hydrogen and Fuel Cell Technology Academic Program ? J. Politano, Florida Institute of Technology, Melbourne, FL This project developed a hydrogen and fuel cel

  20. A NEW MULTIDIRECTIONAL EXTRAPOLATION HOLE-FILLING METHOD FOR DEPTH-IMAGE-BASED RENDERING

    E-Print Network [OSTI]

    Po, Lai-Man

    A NEW MULTIDIRECTIONAL EXTRAPOLATION HOLE-FILLING METHOD FOR DEPTH-IMAGE-BASED RENDERING Lai-Man Po School of Peking University, Shenzhen, China ABSTRACT Depth-Image-Based Rendering (DIBR) is widely used synthesis with high-quality depth map. Index Terms - Depth-Image-Based-Rendering, DIBR, Hole

  1. RFID tag modification for full depth backscatter modulation

    DOE Patents [OSTI]

    Scott, Jeffrey Wayne [Pasco, WA; Pratt, Richard M [Richland, WA

    2010-07-20T23:59:59.000Z

    A modulated backscatter radio frequency identification device includes a diode detector configured to selectively modulate a reply signal onto an incoming continuous wave; communications circuitry configured to provide a modulation control signal to the diode detector, the diode detector being configured to modulate the reply signal in response to be modulation control signal; and circuitry configured to increase impedance change at the diode detector which would otherwise not occur because the diode detector rectifies the incoming continuous wave while modulating the reply signal, whereby reducing the rectified signal increases modulation depth by removing the reverse bias effects on impedance changes. Methods of improving depth of modulation in a modulated backscatter radio frequency identification device are also provided.

  2. Initial Modeling of a Pressurized Water Reactor Completed Using RELAP-7

    Broader source: Energy.gov [DOE]

    RELAP-7 is a nuclear reactor system safety analysis code where initial capabilities were demonstrated by simulating a steady-state single-phase pressurized water reactor (PWR) with two parallel loops and multiple reactor core flow channels.

  3. Column Initialization 1 Initializing Distillation Column Models 1

    E-Print Network [OSTI]

    Dundee, University of

    Column Initialization 1 Initializing Distillation Column Models 1 Roger Fletcher \\Lambda with the optimisation of distillation column models by non linear programming are considered. The paper presents of the distillation column model. A certain limiting case of the column model is examined, that of infinite reflux

  4. Innovative Manufacturing Initiative Recognition Day

    Broader source: Energy.gov [DOE]

    The Innovative Manufacturing Initiative (IMI) Recognition Day (held in Washington, DC on June 20, 2012) showcased IMI projects selected by the Energy Department to help American manufacturers...

  5. Using the Multi-Depth Deflectometer to study pavement response

    E-Print Network [OSTI]

    Yazdani, Jamshed Iqbal

    1989-01-01T23:59:59.000Z

    - Section 11 (Load: 8500 lbs. ) Variation of layer moduli backcalculated from depth deflections - Section 11 (Load: 16000 lbs. ) Measured deflections - Section 12 Moduli values backcalculated from BISAR - Section 12, Infinite subgrade . Moduli values... . Typical N? versus bulk stress (8) relationship for granular materials . MDD deflection basin measured under FWD load- 8500 lb. load level 143 144 145 146 148 149 67 68 NDD deflection basin predicted from BISAR Measured versus predicted...

  6. Depth Profile Analysis of New Materials in Hollow Cathode Discharge

    SciTech Connect (OSTI)

    Djulgerova, R.; Mihailov, V.; Gencheva, V.; Popova, L.; Panchev, B. [Institute of Solid State Physics - Bulgarian Academy of Sciences, 1784 Sofia (Bulgaria); Michaylova, V. [Technical University of Sofia, 1797 Sofia (Bulgaria); Szytula, A.; Gondek, L.; Dohnalik, T.M. [Smoluchowski Institute of Physics - Jagellonian University, 30-059 Cracow (Poland); Petrovic, Z.Lj. [Institute of Physics, 11080 Zemun, Belgrade (Serbia and Montenegro)

    2004-12-01T23:59:59.000Z

    In this review the possibility of hollow cathode discharge for depth profile analysis is demonstrated for several new materials: planar optical waveguides fabricated by Ag+-Na+ ion exchange process in glasses, SnO2 thin films for gas sensors modified by hexamethildisilazane after rapid thermal annealing, W- and WC- CVD layers deposited on Co-metalloceramics and WO3- CVD thin films deposited on glass. The results are compared with different standard techniques.

  7. Obtaining anisotropic velocity data for proper depth seismic imaging

    SciTech Connect (OSTI)

    Egerev, Sergey; Yushin, Victor; Ovchinnikov, Oleg; Dubinsky, Vladimir; Patterson, Doug [Andreyev Acoustics Institute, Moscow, 117036 (Russian Federation); Baker Hughes, Inc, 2001 Rankin Road, Houston, TX, 77073 (United States)

    2012-05-24T23:59:59.000Z

    The paper deals with the problem of obtaining anisotropic velocity data due to continuous acoustic impedance-based measurements while scanning in the axial direction along the walls of the borehole. Diagrams of full conductivity of the piezoceramic transducer were used to derive anisotropy parameters of the rock sample. The measurements are aimed to support accurate depth imaging of seismic data. Understanding these common anisotropy effects is important when interpreting data where it is present.

  8. Depth dependent dynamics in the hydration shell of a protein

    E-Print Network [OSTI]

    J. Servantie; C. Atilgan; A. R. Atilgan

    2010-07-31T23:59:59.000Z

    We study the dynamics of hydration water/protein association in folded proteins, using lysozyme and myoglobin as examples. Extensive molecular dynamics simulations are performed to identify underlying mechanisms of the dynamical transition that corresponds to the onset of amplified atomic fluctuations in proteins. The number of water molecules within a cutoff distance of each residue scales linearly with protein depth index and is not affected by the local dynamics of the backbone. Keeping track of the water molecules within the cutoff sphere, we observe an effective residence time, scaling inversely with depth index at physiological temperatures while the diffusive escape is highly reduced below the transition. A depth independent orientational memory loss is obtained for the average dipole vector of the water molecules within the sphere when the protein is functional. While below the transition temperature, the solvent is in a glassy state, acting as a solid crust around the protein, inhibiting any large scale conformational fluctuations. At the transition, most of the hydration shell unfreezes and water molecules collectively make the protein more flexible.

  9. Exploring the concept of compressed air energy storage (CAES) in lined rock caverns at shallow depth: A modeling study of air tightness and energy balance

    SciTech Connect (OSTI)

    Kim, H.-M.; Rutqvist, J.; Ryu, D.-W.; Choi, B.-H.; Sunwoo, C.; Song, W.-K.

    2011-07-15T23:59:59.000Z

    This paper presents a numerical modeling study of coupled thermodynamic, multiphase fluid flow and heat transport associated with underground compressed air energy storage (CAES) in lined rock caverns. Specifically, we explored the concept of using concrete lined caverns at a relatively shallow depth for which constructing and operational costs may be reduced if air tightness and stability can be assured. Our analysis showed that the key parameter to assure long-term air tightness in such a system was the permeability of both the concrete lining and the surrounding rock. The analysis also indicated that a concrete lining with a permeability of less than 110{sup -18} m{sup 2} would result in an acceptable air leakage rate of less than 1%, with the operational pressure range between 5 and 8 MPa at a depth of 100 m. It was further noted that capillary retention properties and the initial liquid saturation of the lining were very important. Indeed, air leakage could be effectively prevented when the air-entry pressure of the concrete lining is higher than the operational air pressure and when the lining is kept moist at a relatively high liquid saturation. Our subsequent energy-balance analysis demonstrated that the energy loss for a daily compression and decompression cycle is governed by the air-pressure loss, as well as heat loss by conduction to the concrete liner and surrounding rock. For a sufficiently tight system, i.e., for a concrete permeability off less than 110{sup -18} m{sup 2}, heat loss by heat conduction tends to become proportionally more important. However, the energy loss by heat conduction can be minimized by keeping the air-injection temperature of compressed air closer to the ambient temperature of the underground storage cavern. In such a case, almost all the heat loss during compression is gained back during subsequent decompression. Finally, our numerical simulation study showed that CAES in shallow rock caverns is feasible from a leakage and energy efficiency viewpoint. Our numerical approach and energy analysis will next be applied in designing and evaluating the performance of a planned full-scale pilot test of the proposed underground CAES concept.

  10. Columbia University flow instability experimental program: Volume 3. Single tube parallel flow tests

    SciTech Connect (OSTI)

    Dougherty, T.; Maciuca, C.; McAssey, E.V. Jr.; Reddy, D.G.; Yang, B.W.

    1990-06-01T23:59:59.000Z

    The coolant in the Savannah River Site (SRS) production nuclear reactor assemblies is circulated as a subcooled liquid under normal operating conditions. This coolant is evenly distributed throughout multiple annular flow channels with a uniform pressure profile across each coolant flow channel. During the postulated Loss of Coolant Accident (LOCA), which is initiated by a hypothetical guillotine pipe break, the coolant flow through the reactor assemblies is significantly reduced. The flow reduction and accompanying power reduction (after shutdown is initiated) occur in the first 1--2 seconds of the LOCA. This portion of the LOCA is referred to as the Flow Instability phase. A series of down flow experiments have been conducted on three different size single tubes. The objective of these experiments was to determine the effect of a parallel flow path on the occurrence of flow instability. In all cases, it has been shown that the point of flow instability (OFI) determined under controlled flow operation does not change when operating in a controlled pressure drop mode (parallel path operation).

  11. Systems Engineering Advancement Research Initiative

    E-Print Network [OSTI]

    de Weck, Olivier L.

    Systems Engineering Advancement Research Initiative RESEARCH PORTFOLIO Fall 2008 About SEAri http://seari.mit.edu The Systems Engineering Advancement Research Initiative brings together a set of sponsored research projects and a consortium of systems engineering leaders from industry, government, and academia. SEAri is positioned within

  12. A biomedical engineering approach to investigating flow and wall shear stress in contracting lymphatics

    E-Print Network [OSTI]

    Dixon, James Brandon

    2006-08-16T23:59:59.000Z

    Collecting microlymphatics play a vital role in promoting lymph flow from the initial lymphatics in the interstitial spaces to the large transport lymph ducts. In most tissues, the primary mechanism for producing this flow ...

  13. Crystal orientation effects on helium ion depth distributions and adatom formation processes in plasma-facing tungsten

    SciTech Connect (OSTI)

    Hammond, Karl D. [Department of Nuclear Engineering, University of Tennessee, Knoxville, Tennessee 379962300 (United States); Wirth, Brian D., E-mail: bdwirth@utk.edu [Department of Nuclear Engineering, University of Tennessee, Knoxville, Tennessee 379962300 (United States); P.O. Box 2008, MS-6003, Oak Ridge National Laboratory, Oak Ridge, Tennessee 378316003 (United States)

    2014-10-14T23:59:59.000Z

    We present atomistic simulations that show the effect of surface orientation on helium depth distributions and surface feature formation as a result of low-energy helium plasma exposure. We find a pronounced effect of surface orientation on the initial depth of implanted helium ions, as well as a difference in reflection and helium retention across different surface orientations. Our results indicate that single helium interstitials are sufficient to induce the formation of adatom/substitutional helium pairs under certain highly corrugated tungsten surfaces, such as (1 1 1)-orientations, leading to the formation of a relatively concentrated layer of immobile helium immediately below the surface. The energies involved for helium-induced adatom formation on (1 1 1) and (2 1 1) surfaces are exoergic for even a single adatom very close to the surface, while (0 0 1) and (0 1 1) surfaces require two or even three helium atoms in a cluster before a substitutional helium cluster and adatom will form with reasonable probability. This phenomenon results in much higher initial helium retention during helium plasma exposure to (1 1 1) and (2 1 1) tungsten surfaces than is observed for (0 0 1) or (0 1 1) surfaces and is much higher than can be attributed to differences in the initial depth distributions alone. The layer thus formed may serve as nucleation sites for further bubble formation and growth or as a source of material embrittlement or fatigue, which may have implications for the formation of tungsten fuzz in plasma-facing divertors for magnetic-confinement nuclear fusion reactors and/or the lifetime of such divertors.

  14. Analytical and Numerical Treatment of a Singular Initial Value Problem in Avalanche

    E-Print Network [OSTI]

    Weinmller, Ewa B.

    are orthogonal. Dynamic Coulomb resistive force T3 = -ghx cos : This is the frictional resisting force of dry-flowing avalanches. The model has the form of a singular initial value problem for a scalar a leading-edge model due to McClung and Hungr for the description of the dynamics of dry-flowing avalanches

  15. Simplified Method for Estimating Future Scour Depth at Existing Bridges

    E-Print Network [OSTI]

    V Govindasamy, Anand

    2010-07-14T23:59:59.000Z

    by the Missouri DOT (Huizinga and Rydlund 2004). The Tennessee DOT uses an initial evaluation process that utilizes a qualitative index based on field observations to describe the potential problems resulting from scour (Simon et al., 1989). Similar qualitative...

  16. GE funds initiative to support STEM initiatives in Oklahoma ...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    STEM Empowers OK: Initiative to enrich STEM education in Oklahoma Click to email this to a friend (Opens in new window) Share on Facebook (Opens in new window) Click to share...

  17. Thin-film optical initiator

    DOE Patents [OSTI]

    Erickson, Kenneth L. (Albuquerque, NM)

    2001-01-01T23:59:59.000Z

    A thin-film optical initiator having an inert, transparent substrate, a reactive thin film, which can be either an explosive or a pyrotechnic, and a reflective thin film. The resultant thin-film optical initiator system also comprises a fiber-optic cable connected to a low-energy laser source, an output charge, and an initiator housing. The reactive thin film, which may contain very thin embedded layers or be a co-deposit of a light-absorbing material such as carbon, absorbs the incident laser light, is volumetrically heated, and explodes against the output charge, imparting about 5 to 20 times more energy than in the incident laser pulse.

  18. Average Depth of Crude Oil and Natural Gas Wells

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office511041cloth DocumentationProductsAlternativeOperationalAugust AugustInstruments on the Site MapDepth of

  19. Property:AvgReservoirDepth | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand Jump to: navigation,Pillar Group BV Jump to:Information PromotingApplicantAvgReservoirDepth Jump

  20. Property:AvgWellDepth | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand Jump to: navigation,Pillar Group BV Jump to:Information PromotingApplicantAvgReservoirDepth

  1. Property:FirstWellDepth | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand Jump to:Ezfeedflag Jump to: navigation, search Property NameFirstWellDepth Jump to: navigation, search

  2. Average Depth of Crude Oil and Natural Gas Wells

    Gasoline and Diesel Fuel Update (EIA)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for On-Highway4,1,50022,3,,,,6,1,9,1,50022,3,,,,6,1,Decade Year-0 Year-1 Year-21960-2012Mission: Focus onDepth of Crude Oil and

  3. Hydroecological factors governing surface water flow on a low-gradient floodplain

    E-Print Network [OSTI]

    'Connor1 Received 2 May 2008; revised 13 January 2009; accepted 28 January 2009; published 28 March 2009 to flow reductions associated with flood control. We measured flow velocity, water depth, and wind consequences for transport and fate of sediments and energy and nutrient-rich materials, which in turn interact

  4. DESIGN AND DEVELOPMENT OF GAS-LIQUID CYLINDRICAL CYCLONE COMPACT SEPARATORS FOR THREE-PHASE FLOW

    SciTech Connect (OSTI)

    Dr. Ram S. Mohan; Dr. Ovadia Shoham

    2001-04-30T23:59:59.000Z

    This report presents a brief overview of the activities and tasks accomplished during the first half year (October 1, 2000-March 31, 2001) of the fourth project year budget period (October 1, 2000-September 30, 2001). An executive summary is presented initially followed by the tasks of the current budget period. Then, detailed description of the experimental and modeling investigations are presented. Subsequently, the technical and scientific results of the activities of this project period are presented with some discussions. The findings of this investigation are summarized in the ''Conclusions'' section followed by relevant references. The fourth project year activities are divided into three main parts, which are carried out in parallel. The first part is continuation of the experimental program that includes a study of the oil/water two-phase behavior at high pressures and control system development for the three-phase GLCC{copyright}. This investigation will be eventually extended for three-phase flow. The second part consists of the development of a simplified mechanistic model incorporating the experimental results and behavior of dispersion of oil in water and water in oil. This will provide an insight into the hydrodynamic flow behavior and serve as the design tool for the industry. Although useful for sizing GLCC{copyright} for proven applications, the mechanistic model will not provide detailed hydrodynamic flow behavior information needed to screen new geometric variations or to study the effect of fluid property variations. Therefore, in the third part, the more rigorous approach of computational fluid dynamics (CFD) will be utilized. Multidimensional multiphase flow simulation at high pressures and for real crude conditions will provide much greater depth into the understanding of the physical phenomena and the mathematical analysis of three-phase GLCC{copyright} design and performance.

  5. Energy Efficient Schools Initiative- Grants

    Broader source: Energy.gov [DOE]

    The Energy Efficient Schools Initiative was created in May 2008 to provide grants and [http://www.dsireusa.org/incentives/incentive.cfm?Incentive_Code=TN57F&re... loans] to Tennessee school...

  6. Georgia Power- Advanced Solar Initiative

    Broader source: Energy.gov [DOE]

    Note: According to Georgia Power's website, the Advanced Solar Initiative's final program guidelines are due to be published on June 25th and the bidding period for is expected to open on July 10,...

  7. Initial

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville PowerCherries 82981-1cnHigh SchoolIn Other News linkThermal Phenomena

  8. Jet initiation of PBX 9502

    SciTech Connect (OSTI)

    McAfee, J.M.

    1987-07-01T23:59:59.000Z

    This report details the progress of an effort to determine the quantitative aspects of the initiation of PBX 9502 (95% TATB, 5% Kel-F 800) by copper jets. The particular jet used was that produced by the LAW warhead (66-mm diameter, 42/sup 0/ angle cone, copper-lined, conical shaped charge). Fifteen experiments, in various configurations, have been fired to define the essential parameters for quantitatively measuring the jet performance and initiation of bare PBX 9502. 7 refs., 8 figs.

  9. Southface Energy Institute: Advanced Commercial Buildings Initiative...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Southface Energy Institute: Advanced Commercial Buildings Initiative - 2015 Peer Review Southface Energy Institute: Advanced Commercial Buildings Initiative - 2015 Peer Review...

  10. Clean Energy Manufacturing Initiative Midwest Regional Summit...

    Office of Environmental Management (EM)

    Clean Energy Manufacturing Initiative Midwest Regional Summit: Lightweighting Breakout Session Summary Clean Energy Manufacturing Initiative Midwest Regional Summit: Lightweighting...

  11. Research Initiative Will Demonstrate Low Temperature Geothermal...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Research Initiative Will Demonstrate Low Temperature Geothermal Electrical Power Generation Systems Using Oilfield Fluids Research Initiative Will Demonstrate Low Temperature...

  12. Identification Of Rippability And Bedrock Depth Using Seismic Refraction

    SciTech Connect (OSTI)

    Ismail, Nur Azwin; Saad, Rosli; Nawawi, M. N. M; Muztaza, Nordiana Mohd; El Hidayah Ismail, Noer [Geophysics Section, School of Physics, 11800 Universiti Sains Malaysia, Pulau Pinang (Malaysia); Mohamad, Edy Tonizam [Faculty of Civil Engineering, Universiti Teknologi Malaysia, 81310 Skudai, Johor (Malaysia)

    2010-12-23T23:59:59.000Z

    Spatial variability of the bedrock with reference to the ground surface is vital for many applications in geotechnical engineering to decide the type of foundation of a structure. A study was done within the development area of Mutiara Damansara utilising the seismic refraction method using ABEM MK8 24 channel seismograph. The geological features of the subsurface were investigated and velocities, depth to the underlying layers were determined. The seismic velocities were correlated with rippability characteristics and borehole records. Seismic sections generally show a three layer case. The first layer with velocity 400-600 m/s predominantly consists of soil mix with gravel. The second layer with velocity 1600-2000 m/s is suggested to be saturated and weathered area. Both layers forms an overburden and generally rippable. The third layer represents granite bedrock with average depth and velocity 10-30 m and >3000 m/s respectively and it is non-rippable. Steep slope on the bedrock are probably the results of shear zones.

  13. Dynamics of flexible fibers in shear flow

    E-Print Network [OSTI]

    Agnieszka M. Slowicka; Eligiusz Wajnryb; Maria L. Ekiel-Jezewska

    2015-04-03T23:59:59.000Z

    Dynamics of flexible non-Brownian fibers in shear flow at low-Reynolds-number are analyzed numerically for a wide range of the ratios A of the fiber bending force to the viscous drag force. Initially, the fibers are aligned with the flow, and later they move in the plane perpendicular to the flow vorticity. A surprisingly rich spectrum of different modes is observed when the value of A is systematically changed, with sharp transitions between coiled and straightening out modes, period-doubling bifurcations from periodic to migrating solutions, irregular dynamics and chaos.

  14. Methods Note/ Net Recharge vs. Depth to Groundwater

    E-Print Network [OSTI]

    Szilagyi, Jozsef

    of Nebraska, United States by Jozsef Szilagyi1,2 , Vitaly A. Zlotnik3 , and Janos Jozsa4 Abstract One, evapotranspiration (ET)-estimation results based on MODIS values (e.g., Mu et al. 2011; Senay et al. 2011; Szilagyi assessment (Senay et al. 2011; Szilagyi et al. 2011b, 2012). For areas with negligible overland flow due

  15. Low volume flow meter

    DOE Patents [OSTI]

    Meixler, Lewis D. (East Windsor, NJ)

    1993-01-01T23:59:59.000Z

    The low flow monitor provides a means for determining if a fluid flow meets a minimum threshold level of flow. The low flow monitor operates with a minimum of intrusion by the flow detection device into the flow. The electrical portion of the monitor is externally located with respect to the fluid stream which allows for repairs to the monitor without disrupting the flow. The electronics provide for the adjustment of the threshold level to meet the required conditions. The apparatus can be modified to provide an upper limit to the flow monitor by providing for a parallel electronic circuit which provides for a bracketing of the desired flow rate.

  16. CHARACTERISTICS OF SOLAR MERIDIONAL FLOWS DURING SOLAR CYCLE 23

    SciTech Connect (OSTI)

    Basu, Sarbani [Department of Astronomy, Yale University, P.O. Box 208101, New Haven, CT 06520-8101 (United States); Antia, H. M., E-mail: sarbani.basu@yale.ed, E-mail: antia@tifr.res.i [Tata Institute of Fundamental Research, Homi Bhabha Road, Mumbai 400005 (India)

    2010-07-01T23:59:59.000Z

    We have analyzed available full-disk data from the Michelson Doppler Imager on board SOHO using the 'ring diagram' technique to determine the behavior of solar meridional flows over solar cycle 23 in the outer 2% of the solar radius. We find that the dominant component of meridional flows during solar maximum was much lower than that during the minima at the beginning of cycles 23 and 24. There were differences in the flow velocities even between the two minima. The meridional flows show a migrating pattern with higher-velocity flows migrating toward the equator as activity increases. Additionally, we find that the migrating pattern of the meridional flow matches those of sunspot butterfly diagram and the zonal flows in the shallow layers. A high-latitude band in meridional flow appears around 2004, well before the current activity minimum. A Legendre polynomial decomposition of the meridional flows shows that the latitudinal pattern of the flow was also different during the maximum as compared to that during the two minima. The different components of the flow have different time dependences, and the dependence is different at different depths.

  17. The Modelling of Degenerate Neck Pinch Singularities in Ricci Flow by Bryant Solitons

    E-Print Network [OSTI]

    David Garfinkle; James Isenberg

    2007-09-04T23:59:59.000Z

    In earlier work, carrying out numerical simulations of the Ricci flow of families of rotationally symmetric geometries on $S3$, we have found strong support for the contention that (at least in the rotationally symmetric case) the Ricci flow for a ``critical'' initial geometry - one which is at the transition point between initial geometries (on $S^3$) whose volume-normalized Ricci flows develop a singular neck pinch, and other initial geometries whose volume normalized Ricci flows converge to a round sphere - evolves into a ``degenerate neck pinch.'' That is, we have seen in this earlier work that the Ricci flows for the critical geometries become locally cylindrical in a neighborhood of the initial pinching, and have the maximum amount of curvature at one or both of the poles. Here, we explore the behavior of these flows at the poles, and find strong support for the conjecture that the Bryant steady solitons accurately model this polar flow.

  18. Optical and thermal depth profile reconstructions of inhomogeneous photopolymerization in dental resins using photothermal waves

    E-Print Network [OSTI]

    Mandelis, Andreas

    by a blue light-emitting diode, the x and x depth profiles were reconstructed from photothermal radiometric

  19. Bacteria in shear flow

    E-Print Network [OSTI]

    Marcos, Ph.D. Massachusetts Institute of Technology

    2011-01-01T23:59:59.000Z

    Bacteria are ubiquitous and play a critical role in many contexts. Their environment is nearly always dynamic due to the prevalence of fluid flow: creeping flow in soil, highly sheared flow in bodily conduits, and turbulent ...

  20. Dispersed flow film boiling

    E-Print Network [OSTI]

    Yoder, Graydon L.

    1980-01-01T23:59:59.000Z

    Dispersed flow consists of small liquid droplets entrained in a flowing vapor. This flow regime can occur in cryogenic equipment, in steam generators, and during nuclear reactor loss of coolant accidents. A theoretical ...

  1. Control Systems Cyber Security: Defense-in-Depth Strategies

    SciTech Connect (OSTI)

    Mark Fabro

    2007-10-01T23:59:59.000Z

    Information infrastructures across many public and private domains share several common attributes regarding IT deployments and data communications. This is particularly true in the control systems domain. A majority of the systems use robust architectures to enhance business and reduce costs by increasing the integration of external, business, and control system networks. However, multi-network integration strategies often lead to vulnerabilities that greatly reduce the security of an organization, and can expose mission-critical control systems to cyber threats. This document provides guidance and direction for developing defense-in-depth strategies for organizations that use control system networks while maintaining a multi-tier information architecture that requires: Maintenance of various field devices, telemetry collection, and/or industrial-level process systems Access to facilities via remote data link or modem Public facing services for customer or corporate operations A robust business environment that requires connections among the control system domain, the external Internet, and other peer organizations.

  2. Control Systems Cyber Security:Defense in Depth Strategies

    SciTech Connect (OSTI)

    David Kuipers; Mark Fabro

    2006-05-01T23:59:59.000Z

    Information infrastructures across many public and private domains share several common attributes regarding IT deployments and data communications. This is particularly true in the control systems domain. A majority of the systems use robust architectures to enhance business and reduce costs by increasing the integration of external, business, and control system networks. However, multi-network integration strategies often lead to vulnerabilities that greatly reduce the security of an organization, and can expose mission-critical control systems to cyber threats. This document provides guidance and direction for developing defense-in-depth strategies for organizations that use control system networks while maintaining a multi-tier information architecture that requires: Maintenance of various field devices, telemetry collection, and/or industrial-level process systems Access to facilities via remote data link or modem Public facing services for customer or corporate operations A robust business environment that requires connections among the control system domain, the external Internet, and other peer organizations.

  3. In-depth survey report of Scoular Elevator, Salina, Kansas

    SciTech Connect (OSTI)

    Zaebst, D.D.

    1987-06-01T23:59:59.000Z

    An in/depth industrial hygiene survey of exposures to phosphine during the use of aluminum phosphide was conducted as part of a survey on exposure to grain fumigants. Area monitoring and breathing-zone sampling for phosphine were conducted during the addition of aluminum phosphide to grain during turning operations; source samples and peak personal exposures were also analyzed. Major sources of personal exposure included the escape of air from the bin headspace during filling with treated grain, filling and emptying of the phosphide pellet dispenser, and infiltration from the treated grain bin and from the pellet dispenser itself into adjacent air space. Relatively good dust control was indicated by the total dust samples collected during the survey. Measures recommended by the author are in the report.

  4. EVALUATION OF ULTRASONIC SNOW DEPTH SENSORS FOR AUTOMATED SURFACE OBSERVING SYSTEMS (ASOS)

    E-Print Network [OSTI]

    i THESIS EVALUATION OF ULTRASONIC SNOW DEPTH SENSORS FOR AUTOMATED SURFACE OBSERVING SYSTEMS (ASOS PREPARED UNDER OUR SUPERVISION BY WENDY ANN BRAZENEC ENTITLED EVALUATION OF ULTRASONIC SNOW DEPTH SENSORS;iii ABSTRACT OF THESIS EVALUATION OF ULTRASONIC SNOW DEPTH SENSORS FOR AUTOMATED SURFACE OBSERVING

  5. Impacts of Shortwave Penetration Depth on Large-Scale Ocean Circulation and Heat Transport

    E-Print Network [OSTI]

    Gnanadesikan, Anand

    Impacts of Shortwave Penetration Depth on Large-Scale Ocean Circulation and Heat Transport COLM independent parameter- izations that use ocean color to estimate the penetration depth of shortwave radiation. This study offers a way to evaluate the changes in irradiance penetration depths in coupled ocean

  6. Neutron production by cosmic-ray muons at shallow depth J. Busenitz,1

    E-Print Network [OSTI]

    Piepke, Andreas G.

    neutrino and proton decay experiments, as well as dark matter searches even though often at greater depth for cold dark matter 3 , and is presently at shallow depth; muon-induced neutrons repre- sent a major at a shallow depth of 32 meters of water equivalent has been measured. The Palo Verde neutrino detector

  7. Depth of manual dismantling analysis: A costbenefit approach

    SciTech Connect (OSTI)

    Achillas, Ch., E-mail: c.achillas@ihu.edu.gr [School of Economics and Business Administration, International Hellenic University, 14th km Thessaloniki-Moudania, 57001 Thermi (Greece); Aidonis, D. [Department of Logistics, Alexander Technological Educational Institute, Branch of Katerini, 60100 Katerini (Greece); Vlachokostas, Ch.; Karagiannidis, A.; Moussiopoulos, N.; Loulos, V. [Laboratory of Heat Transfer and Environmental Engineering, Department of Mechanical Engineering, Aristotle University, Thessaloniki, Box 483, 54124 Thessaloniki (Greece)

    2013-04-15T23:59:59.000Z

    Highlights: ? A mathematical modeling tool for OEMs. ? The tool can be used by OEMs, recyclers of electr(on)ic equipment or WEEE management systems regulators. ? The tool makes use of costbenefit analysis in order to determine the optimal depth of product disassembly. ? The reusable materials and the quantity of metals and plastics recycled can be quantified in an easy-to-comprehend manner. - Abstract: This paper presents a decision support tool for manufacturers and recyclers towards end-of-life strategies for waste electrical and electronic equipment. A mathematical formulation based on the cost benefit analysis concept is herein analytically described in order to determine the parts and/or components of an obsolete product that should be either non-destructively recovered for reuse or be recycled. The framework optimally determines the depth of disassembly for a given product, taking into account economic considerations. On this basis, it embeds all relevant cost elements to be included in the decision-making process, such as recovered materials and (depreciated) parts/components, labor costs, energy consumption, equipment depreciation, quality control and warehousing. This tool can be part of the strategic decision-making process in order to maximize profitability or minimize end-of-life management costs. A case study to demonstrate the models applicability is presented for a typical electronic product in terms of structure and material composition. Taking into account the market values of the pilot products components, the manual disassembly is proven profitable with the marginal revenues from recovered reusable materials to be estimated at 2.9323.06 , depending on the level of disassembly.

  8. Predicting dissolution patterns in variable aperture fractures: 1. Development and evaluation of an enhanced depth-averaged computational model

    SciTech Connect (OSTI)

    Detwiler, R L; Rajaram, H

    2006-04-21T23:59:59.000Z

    Water-rock interactions within variable-aperture fractures can lead to dissolution of fracture surfaces and local alteration of fracture apertures, potentially transforming the transport properties of the fracture over time. Because fractures often provide dominant pathways for subsurface flow and transport, developing models that effectively quantify the role of dissolution on changing transport properties over a range of scales is critical to understanding potential impacts of natural and anthropogenic processes. Dissolution of fracture surfaces is controlled by surface-reaction kinetics and transport of reactants and products to and from the fracture surfaces. We present development and evaluation of a depth-averaged model of fracture flow and reactive transport that explicitly calculates local dissolution-induced alterations in fracture apertures. The model incorporates an effective mass transfer relationship that implicitly represents the transition from reaction-limited dissolution to transport-limited dissolution. We evaluate the model through direct comparison to previously reported physical experiments in transparent analog fractures fabricated by mating an inert, transparent rough surface with a smooth single crystal of potassium dihydrogen phosphate (KDP), which allowed direct measurement of fracture aperture during dissolution experiments using well-established light transmission techniques [Detwiler, et al., 2003]. Comparison of experiments and simulations at different flow rates demonstrate the relative impact of the dimensionless Peclet and Damkohler numbers on fracture dissolution and the ability of the computational model to simulate dissolution. Despite some discrepancies in the small-scale details of dissolution patterns, the simulations predict the evolution of large-scale features quite well for the different experimental conditions. This suggests that our depth-averaged approach to simulating fracture dissolution provides a useful approach for extending laboratory results that are often limited in scale to scales that are more representative of geologic processes of interest.

  9. AVAILABLE ONLINE AT: INITIATED BY:

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office511041cloth DocumentationProducts (VAP) VAP7-0973 1 Introduction In the design INITIATED BY: INITIATED

  10. The Product Flow Model Gio Wiederhold

    E-Print Network [OSTI]

    Wiederhold, Gio

    (IT) operations for software then little overall lifetime cost reduction has been achieved by reduced Boehm has demonstrated, a modest initial investment, say 20% over the most economical cost of deliveringThe Product Flow Model Gio Wiederhold Stanford University 14 May 2003 Abstract We observed a new

  11. Multiphase flow calculation software

    DOE Patents [OSTI]

    Fincke, James R. (Idaho Falls, ID)

    2003-04-15T23:59:59.000Z

    Multiphase flow calculation software and computer-readable media carrying computer executable instructions for calculating liquid and gas phase mass flow rates of high void fraction multiphase flows. The multiphase flow calculation software employs various given, or experimentally determined, parameters in conjunction with a plurality of pressure differentials of a multiphase flow, preferably supplied by a differential pressure flowmeter or the like, to determine liquid and gas phase mass flow rates of the high void fraction multiphase flows. Embodiments of the multiphase flow calculation software are suitable for use in a variety of applications, including real-time management and control of an object system.

  12. Energy-Efficient Flow Time Scheduling: An Experimental Study

    E-Print Network [OSTI]

    Wong, Prudence W.H.

    of modern processors. A pop- ular technology to reduce energy usage is dynamic speed scaling [5, 8] where and energy, Albers and Fujiwara [3] initiated the study of minimizing a linear combination of total flowEnergy-Efficient Flow Time Scheduling: An Experimental Study Jude-Thaddeus Ojiaku (speaker) Daniel

  13. Viscosity from elliptic flow: the path to precision

    E-Print Network [OSTI]

    Ulrich W. Heinz; J. Scott Moreland; Huichao Song

    2009-08-18T23:59:59.000Z

    Using viscous relativistic hydrodynamics we show that systematic studies of the impact parameter dependence of the eccentricity scaled elliptic flow can distinguish between different models for the calculation of the initial source eccentricity. This removes the largest present uncertainty in the extraction of the specific viscosity of the matter created in relativistic heavy-ion collisions from precise elliptic flow measurements.

  14. Simulated Interdiction: Proliferation Security Initiative

    E-Print Network [OSTI]

    2009-01-01T23:59:59.000Z

    ... Technical Capabilities to Support PSI Foreign Policy and External Relations ............... Republic of Bevostan .. Geography ... iii 1 3 4 5 6 7 8 8 8 8 8 9 9 10... Security, Science and Policy Institute (NSSPI) Texas A&M University May 6, 2009 Simulated Interdiction: The Proliferation Security Initiative (PSI) Acknowledgements The National Nuclear Security Administration (NNSA) of the U.S. Department...

  15. Zentrum fr Nutzfahrzeugtechnologie Initial situation

    E-Print Network [OSTI]

    Berns, Karsten

    with a vehicle model in the MKS software for the study of vehicle dynamic behavior. Schindler03_2012_03 Zentrum to calculate the tyre dynamic behavior when travelling through the soil surface. It can be fur- ther integratedZentrum für Nutzfahrzeugtechnologie Initial situation: The study on the trafficability

  16. Managing Critical Management Improvement Initiatives

    Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

    2003-10-01T23:59:59.000Z

    Provides requirements and responsibilities for planning, executing and assessing critical management improvement initiatives within DOE. DOE N 251.59, dated 9/27/2004, extends this Notice until 10/01/2005. Archived 11-8-10. Does not cancel other directives.

  17. Stopping Cooling Flows with Jets

    E-Print Network [OSTI]

    Fabrizio Brighenti; William G. Mathews

    2006-01-24T23:59:59.000Z

    We describe 2D gasdynamical models of jets that carry mass as well as energy to the hot gas in galaxy clusters. These flows have many attractive attributes for solving the galaxy cluster cooling flow problem: Why the hot gas temperature and density profiles resemble cooling flows but show no spectral evidence of cooling to low temperatures. Using an approximate model for the cluster A1795, we show that mass-carrying jets can reduce the overall cooling rate to or below the low values implied by X-ray spectra. Biconical subrelativistic jets, described with several ad hoc parameters, are assumed to be activated when gas flows toward or cools near a central supermassive black hole. As the jets proceed out from the center they entrain more and more ambient gas. The jets lose internal pressure by expansion and are compressed by the ambient cluster gas, becoming rather difficult to observe. For a wide variety of initial jet parameters and several feedback scenarios the global cooling can be suppressed for many Gyrs while maintaining cluster temperature profiles similar to those observed. The intermittancy of the feedback generates multiple generations of X-ray cavities similar to those observed in the Perseus Cluster and elsewhere.

  18. Initiation disruptor systems and methods of initiation disruption

    DOE Patents [OSTI]

    Baum, Dennis W

    2014-09-23T23:59:59.000Z

    A system that may be used as an initiation disruption system (IDS) according to one embodiment includes an explosive charge; a plurality of particles in a layer at least partially surrounding the explosive charge; and a fire suppressant adjacent the plurality of particles. A method for disabling an object according to one embodiment includes placing the system as recited above near an object; and causing the explosive charge to initiate, thereby applying mechanical loading to the object such that the object becomes disabled. Additional systems and methods are also presented. A device according to another embodiment includes a plurality of particles bound by a binder thereby defining a sidewall having an interior for receiving an explosive; and a fire suppressant adjacent the plurality of particles and binder. Additional systems and methods are also presented.

  19. Freshwater Flow Charts - 1995

    SciTech Connect (OSTI)

    Kaiper, G V

    2003-11-21T23:59:59.000Z

    This report covers the following: (1) Explanation of Charts Showing Freshwater Flow in 1995; (2) Estimated U.S. Freshwater Flow in 1995 (chart); (3) Estimated California Freshwater Flow in 1995 (chart); (4) Estimated New Mexico Freshwater Flow in 1995 (chart); and (5) Web locations and credits.

  20. California Solar Initiative California Public Utilities Commission

    E-Print Network [OSTI]

    California Solar Initiative California Public Utilities Commission Staff Progress Report January 2008 #12;California Solar Initiative, CPUC Staff Progress Report, January 2008 This page intentionally left blank. #12;California Solar Initiative, CPUC Staff Progress Report, January 2008 Table of Contents

  1. Green Button Initiative Growing | Department of Energy

    Broader source: Energy.gov (indexed) [DOE]

    Initiative Growing Green Button Initiative Growing May 17, 2013 - 1:17pm Addthis The Green Button initiative, which is the common-sense idea that electricity customers should...

  2. Portable wastewater flow meter

    DOE Patents [OSTI]

    Hunter, Robert M. (320 S. Wilson Ave., Bozeman, MT 59715)

    1990-01-01T23:59:59.000Z

    A portable wastewater flow meter particularly adapted for temporary use at a single location in measuring the rate of liquid flow in a circular entrance conduit of a sewer manhole both under free flow and submerged, open channel conditions and under full pipe, surcharged conditions, comprising an apparatus having a cylindrical external surface and an inner surface that constricts the flow through the apparatus in such a manner that a relationship exists between (1) the difference between the static pressure head of liquid flowing through the entrance of the apparatus and the static pressure head of liquid flowing through the constriction, and (2) the rate of liquid flow through the apparatus.

  3. Portable wastewater flow meter

    DOE Patents [OSTI]

    Hunter, Robert M. (320 S. Wilson Ave., Bozeman, MT 59715)

    1999-02-02T23:59:59.000Z

    A portable wastewater flow meter particularly adapted for temporary use at a single location in measuring the rate of liquid flow in a circular entrance conduit of a sewer manhole both under free flow and submerged, open channel conditions and under fill pipe, surcharged conditions, comprising an apparatus having a cylindrical external surface and an inner surface that constricts the flow through the apparatus in such a manner that a relationship exists between (1) the difference between the static pressure head of liquid flowing through the entrance of the apparatus and the static pressure head of liquid flowing through the constriction, and (2) the rate of liquid flow through the apparatus.

  4. Galactic Bulge Microlensing Optical Depth from EROS-2

    E-Print Network [OSTI]

    C. Hamadache; L. Le Guillou; P. Tisserand; C. Afonso; J. N. Albert; J. Andersen; R. Ansari; E. Aubourg; P. Bareyre; J. P. Beaulieu; X. Charlot; C. Coutures; R. Ferlet; P. Fouqu; J. F. Glicenstein; B. Goldman; A. Gould; D. Graff; M. Gros; J. Haissinski; J. de Kat; E. Lesquoy; C. Loup; C. Magneville; J. B. Marquette; E. Maurice; A. Maury; A. Milsztajn; M. Moniez; N. Palanque-Delabrouille; O. Perdereau; Y. R. Rahal; J. Rich; M. Spiro; A. Vidal-Madjar; L. Vigroux; S. Zylberajch

    2006-07-13T23:59:59.000Z

    We present a new EROS-2 measurement of the microlensing optical depth toward the Galactic Bulge. Light curves of $5.6\\times 10^{6}$ clump-giant stars distributed over $66 \\deg^2$ of the Bulge were monitored during seven Bulge seasons. 120 events were found with apparent amplifications greater than 1.6 and Einstein radius crossing times in the range $5 {\\rm d}

  5. Guam Initial Technical Assessment Report

    SciTech Connect (OSTI)

    Baring-Gould, I.; Conrad, M.; Haase, S.; Hotchkiss, E.; McNutt, P.

    2011-04-01T23:59:59.000Z

    Under an interagency agreement, funded by the Department of Interior's (DOI) Office of Insular Affairs (OIA), the National Renewable Energy Laboratory (NREL) was tasked to deliver technical assistance to the island of Guam by conducting an island initial technical assessment that would lay out energy consumption and production data and establish a baseline. This assessment will be used to conduct future analysis and studies by NREL that will estimate energy efficiency and renewable energy potential for the island of Guam.

  6. The President's Biofuels Initiative | Department of Energy

    Broader source: Energy.gov (indexed) [DOE]

    The President's Biofuels Initiative The President's Biofuels Initiative Presentation by Neil Rossmeissl at the October 24, 2006 Bio-Derived Liquids to Hydrogen Distributed...

  7. Voluntary Initiative on Incentives: Toolkit Training Webinar...

    Energy Savers [EERE]

    Voluntary Initiative on Incentives: Toolkit Training Webinar Voluntary Initiative on Incentives: Toolkit Training Webinar March 26, 2015 12:30PM to 2:0...

  8. Innovative Corridors Initiative: Business Model Analysis

    E-Print Network [OSTI]

    Shaheen, Susan; Lingham, Viginia; Finson, Rachel S.

    2007-01-01T23:59:59.000Z

    Wenger, Joyce. Business Models for Vehicle InfrastructureCorridors Initiative: Business Model Analysis Rachel S.Corridors Initiative: Business Model Analysis Task Order

  9. Advanced Manufacturing Initiative Improves Turbine Blade Productivity...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Advanced Manufacturing Initiative Improves Turbine Blade Productivity Advanced Manufacturing Initiative Improves Turbine Blade Productivity May 20, 2011 - 2:56pm Addthis This is an...

  10. Climate VISION: Private Sector Initiatives: Cement: Resources...

    Office of Scientific and Technical Information (OSTI)

    The Cement Sustainability Initiative Coordinated by the World Business Council for Sustainable Development, the Cement Sustainability Initiative (CSI) helps the cement...

  11. Clean Coal Power Initiative | Department of Energy

    Office of Environmental Management (EM)

    Clean Coal Power Initiative Clean Coal Power Initiative "Clean coal technology" describes a new generation of energy processes that sharply reduce air emissions and other...

  12. California Low Carbon Fuels Infrastructure Investment Initiative...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Low Carbon Fuels Infrastructure Investment Initiative California Low Carbon Fuels Infrastructure Investment Initiative 2012 DOE Hydrogen and Fuel Cells Program and Vehicle...

  13. Energy Innovation: Green Button Initiative Empowering Americans...

    Energy Savers [EERE]

    Energy Innovation: Green Button Initiative Empowering Americans to Save Energy and Money Energy Innovation: Green Button Initiative Empowering Americans to Save Energy and Money...

  14. Energy Transition Initiative: Islands Playbook (Book) | OSTI...

    Office of Scientific and Technical Information (OSTI)

    Energy Transition Initiative: Islands Playbook (Book) Re-direct Destination: The Island Energy Playbook (the Playbook) provides an action-oriented guide to successfully initiating,...

  15. Method and apparatus for monitoring characteristics of a flow path having solid components flowing therethrough

    DOE Patents [OSTI]

    Hoskinson, Reed L. (Rigby, ID); Svoboda, John M. (Idaho Falls, ID); Bauer, William F. (Idaho Falls, ID); Elias, Gracy (Idaho Falls, ID)

    2008-05-06T23:59:59.000Z

    A method and apparatus is provided for monitoring a flow path having plurality of different solid components flowing therethrough. For example, in the harvesting of a plant material, many factors surrounding the threshing, separating or cleaning of the plant material and may lead to the inadvertent inclusion of the component being selectively harvested with residual plant materials being discharged or otherwise processed. In accordance with the present invention the detection of the selectively harvested component within residual materials may include the monitoring of a flow path of such residual materials by, for example, directing an excitation signal toward of flow path of material and then detecting a signal initiated by the presence of the selectively harvested component responsive to the excitation signal. The detected signal may be used to determine the presence or absence of a selected plant component within the flow path of residual materials.

  16. Spatially localized solutions of shear flows

    E-Print Network [OSTI]

    Gibson, J F

    2013-01-01T23:59:59.000Z

    We present several new spatially localized equilibrium and traveling-wave solutions of plane Couette and channel flows. The solutions exhibit strikingly concentrated regions of vorticity that are flanked on either side by high-speed streaks. For several traveling-wave solutions of channel flow, the concentrated vortex structures are confined to the near-wall region and form particularly isolated and elemental coherent structures in the near-wall region of shear flows. The solutions are constructed by a variety of methods: application of windowing functions to previously known spatially periodic solutions, continuation from plane Couette to channel flow conditions, and from initial guesses obtained from turbulent simulation data. We show how the symmetries of localized solutions derive from the symmetries of their periodic counterparts, analyze the exponential decay of their tails, examine the scale separation and scaling of their streamwise Fourier modes, and show that they develop critical layers for large R...

  17. Rarefaction wave in relativistic steady magnetohydrodynamic flows

    SciTech Connect (OSTI)

    Sapountzis, Konstantinos, E-mail: ksapountzis@phys.uoa.gr; Vlahakis, Nektarios, E-mail: vlahakis@phys.uoa.gr [Faculty of Physics, University of Athens, 15784 Zografos, Athens (Greece)

    2014-07-15T23:59:59.000Z

    We construct and analyze a model of the relativistic steady-state magnetohydrodynamic rarefaction that is induced when a planar symmetric flow (with one ignorable Cartesian coordinate) propagates under a steep drop of the external pressure profile. Using the method of self-similarity, we derive a system of ordinary differential equations that describe the flow dynamics. In the specific limit of an initially homogeneous flow, we also provide analytical results and accurate scaling laws. We consider that limit as a generalization of the previous Newtonian and hydrodynamic solutions already present in the literature. The model includes magnetic field and bulk flow speed having all components, whose role is explored with a parametric study.

  18. RELAP-7 and PRONGHORN Initial Integration Plan

    SciTech Connect (OSTI)

    J. Ortensi; D. Andrs; A.A. Bingham; R.C. Martineau; J.W. Peterson

    2012-05-01T23:59:59.000Z

    Modern nuclear reactor safety codes require the ability to solve detailed coupled neutronicthermal fluids problems. For larger cores, this implies fully coupled 3-D spatial dynamics with appropriate feedback models that can provide enough resolution to accurately compute core heat generation and removal during steady and unsteady conditions. The reactor analyis code PRONGHORN is being coupled to RELAP-7 as a first step to extend RELAP's current capabilities. This report details the mathematical models, the type of coupling, and the testing that will be used to produce an integrated system. RELAP-7 is a MOOSE-based application that solves the continuity, momentum, and energy equations in 1-D for a compressible fluid. The pipe and joint capabilities enable it to model parts of the PCU system. The PRONGHORN application, also developed on the MOOSE infrastructure, solves the coupled equations that define the neutron diffusion, fluid flow, and heat transfer in a 3-D core model. Initially, the two systems will be loosely coupled to simplify the transition towards a more complex infrastructure. The integration will be tested with the OECD/NEA MHTGR-350 Coupled Neutronics-Thermal Fluids benchmark model.

  19. "Defense-in-Depth" Laser Safety and the National Ignition Facility

    SciTech Connect (OSTI)

    King, J J

    2010-12-02T23:59:59.000Z

    The National Ignition Facility (NIF) is the largest and most energetic laser in the world contained in a complex the size of a football stadium. From the initial laser pulse, provided by telecommunication style infrared nanoJoule pulsed lasers, to the final 192 laser beams (1.8 Mega Joules total energy in the ultraviolet) converging on a target the size of a pencil eraser, laser safety is of paramount concern. In addition to this, there are numerous high-powered (Class 3B and 4) diagnostic lasers in use that can potentially send their laser radiation travelling throughout the facility. With individual beam paths of up to 1500 meters and a workforce of more than one thousand, the potential for exposure is significant. Simple laser safety practices utilized in typical laser labs just don't apply. To mitigate these hazards, NIF incorporates a multi layered approach to laser safety or 'Defense in Depth.' Most typical high-powered laser operations are contained and controlled within a single room using relatively simplistic controls to protect both the worker and the public. Laser workers are trained, use a standard operating procedure, and are required to wear Personal Protective Equipment (PPE) such as Laser Protective Eyewear (LPE) if the system is not fully enclosed. Non-workers are protected by means of posting the room with a warning sign and a flashing light. In the best of cases, a Safety Interlock System (SIS) will be employed which will 'safe' the laser in the case of unauthorized access. This type of laser operation is relatively easy to employ and manage. As the operation becomes more complex, higher levels of control are required to ensure personnel safety. Examples requiring enhanced controls are outdoor and multi-room laser operations. At the NIF there are 192 beam lines and numerous other Class 4 diagnostic lasers that can potentially deliver their hazardous energy to locations far from the laser source. This presents a serious and complex potential hazard to personnel. Because of this, a multilayered approach to safety is taken. This paper presents the philosophy and approach taken at the NIF in the multi-layered 'defense-in-depth' approach to laser safety.

  20. Initial Decision and Risk Analysis

    SciTech Connect (OSTI)

    Engel, David W.

    2012-02-29T23:59:59.000Z

    Decision and Risk Analysis capabilities will be developed for industry consideration and possible adoption within Year 1. These tools will provide a methodology for merging qualitative ranking of technology maturity and acknowledged risk contributors with quantitative metrics that drive investment decision processes. Methods and tools will be initially introduced as applications to the A650.1 case study, but modular spreadsheets and analysis routines will be offered to industry collaborators as soon as possible to stimulate user feedback and co-development opportunities.

  1. AVAILABLE ONLINE AT: INITIATED BY:

    National Nuclear Security Administration (NNSA)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOn AprilA groupTuba City,EnrichedSupplementalAdministrationAdministration INITIATED

  2. AVAILABLE ONLINE AT: INITIATED BY:

    National Nuclear Security Administration (NNSA)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOn AprilA groupTuba City,EnrichedSupplementalAdministrationAdministration INITIATED

  3. Practical Analysis of materials with depth varying compositions using FT-IR photoacoustic spectroscopy (PAS)

    SciTech Connect (OSTI)

    J.F. McClelland; R.W. Jones; Siquan Luo

    2004-09-30T23:59:59.000Z

    FT-IR photoacoustic spectroscopy (PAS) is discussed as a nondestructive method to probe the molecular composition of materials versus depth on the basis of the analysis of layers of experimentally controllable thickness, which are measured from the sample surface to depths of some tens of micrometers, depending on optical and thermal properties. Computational methods are described to process photoacoustic amplitude and phase spectra for both semi-quantitative and quantitative depth analyses. These methods are demonstrated on layered and gradient samples.

  4. Interaction of a monopole vortex with an isolated topographic feature in a three-layer geophysical flow

    E-Print Network [OSTI]

    Evgeny A. Ryzhov; K. V. Koshel

    2012-09-27T23:59:59.000Z

    In the frame of a three-layer quasi-geostrophic analytical model of a $f$-plane geophysical flow, Lagrangian advection being induced by the interaction of a monopole vortex with an isolated topographic feature is addressed. Two different cases when the monopole locates either within the upper or the middle layer are of our interest. In the bottom layer, there is a delta function topographic feature, which generates a closed recirculation region in its vicinity due to the background flow. This recirculation region extends to the middle and upper layers, and it plays the role of a topographic vortex. The interaction between the monopole and the topographic vortex causes complex, including chaotic, advection of fluid particles. We show that the model's parameters, namely, the monopole and topographic vortices' strengths and initial positions, the layers' depths and densities are responsible for the diverse advection patterns. While the patterns are rather complicated, however, one can single out two major processes, which mostly govern fluid particle advection. The first one is the variation in time of the system's phase space structure, so that within the closed region of the topographic vortex, there appear periodically unclosed particle pathways by which the particles leave the topographic vortex. The second one is chaotic advection that arises from the nonstationarity of the monopole-topography interaction.

  5. AUV technology heads for new depths[Autonomous Underwater Vehicle

    SciTech Connect (OSTI)

    Hayes, D.

    2000-04-01T23:59:59.000Z

    High-tech unmanned submarine technologies initially developed by the US Navy are being adapted for a new role to assist the oil and gas industry's shift into deeper waters. To address the problem of costly data acquisition and inaccurate survey data, C and C Technologies of Lafayette, La., has hired Kongsberg Simrad to construct the Hugin 3000 deepwater autonomous underwater vehicle (AUV). As the technology is applied to energy exploration and production advances to meet the deepwater challenges beyond the continental shelf, AUVs will be increasingly employed, it is believed. The paper describes the Hugin project, unexpected situations, the vehicle position tracking system, vehicle operation and real-time data quality control, real-time data monitoring and control, Hugin field experience, and pipe route surveying.

  6. Towards improved methods for determining porous media multiphase flow functions

    E-Print Network [OSTI]

    Xue, Song

    2004-09-30T23:59:59.000Z

    to the empirical relation by using the three-dimensional saturation and relaxation data. 7 CHAPTER II ESTIMATION OF POROUS MEDIA FLOW FUNCTIONS Multiphase flow functions are required to simulate the flow of multiple fluid phases through porous media....3) Snw + Sw = 1: (2.4) Together with boundary and initial conditions, Eqs. (2.1)-(2.4) provide a mathemat- ical model of three-dimensional, two-phase fluid flow in porous media. Several properties have to be specified in the above model. The densities...

  7. High-energy x-ray diffractometer for nondestructive strain depth profile measurement

    SciTech Connect (OSTI)

    Al-Shorman, M. Y. [Department of Physics, Yarmouk University, 21163 Irbid (Jordan)] [Department of Physics, Yarmouk University, 21163 Irbid (Jordan); Jensen, T. C.; Gray, J. N. [Center for Nondestructive Evaluation, Iowa State University, Ames, Iowa 50011 (United States)] [Center for Nondestructive Evaluation, Iowa State University, Ames, Iowa 50011 (United States)

    2013-12-15T23:59:59.000Z

    We describe a lab-based high-energy x-ray diffraction system and a new approach to nondestructively measuring strain profiles in polycrystalline samples. This technique utilizes the tungsten K{sub ?1} characteristic radiation from a standard industrial x-ray tube. We introduce a simulation model that is used to determine strain values from data collected with this system. Examples of depth profiling are shown for shot peened aluminum and titanium samples. Profiles to 1 mm depth in aluminum and 300 ?m depth in titanium with a depth resolution of 20 ?m are presented.

  8. alluvial basins in-depth: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    of structures requires more accurate design methods. An important variable in the fire performance of timber structures is the in-depth temperature distribution, ......

  9. Depth Profile of Uncompensated Spins in an Exchange-Bias System

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Depth Profile of Uncompensated Spins in an Exchange-Bias System Print The phenomenon known as exchange bias at the interface between a ferromagnet and an antiferromagnet is...

  10. AN IMPLICIT 2-D DEPTH-AVERAGED FINITE-VOLUME MODEL OF FLOW AND SEDIMENT TRANSPORT IN COASTAL WATERS

    E-Print Network [OSTI]

    US Army Corps of Engineers

    diffusion induced by currents, waves and wave breaking. The model uses a quadtree rectangular mesh. However, because of the dynamic nature of currents and waves on the coast, neither bed load nor suspended with the spectral wave transformation model called CMS-Wave, which solves the steady-state wave-action balance

  11. TANK MIXING STUDY WITH FLOW RECIRCULATION

    SciTech Connect (OSTI)

    Lee, S.

    2014-06-25T23:59:59.000Z

    The primary objective of this work is to quantify the mixing time when two miscible fluids are mixed by one recirculation pump and to evaluate adequacy of 2.5 hours of pump recirculation to be considered well mixed in SRS tanks, JT-71/72. The work scope described here consists of two modeling analyses. They are the steady state flow pattern analysis during pump recirculation operation of the tank liquid and transient species transport calculations based on the initial steady state flow patterns. The modeling calculations for the mixing time are performed by using the 99% homogeneity criterion for the entire domain of the tank contents.

  12. Development of a Water Based, Critical Flow, Non-Vapor Compression cooling Cycle

    SciTech Connect (OSTI)

    Hosni, Mohammad H.

    2014-03-30T23:59:59.000Z

    Expansion of a high-pressure liquid refrigerant through the use of a thermostatic expansion valve or other device is commonplace in vapor-compression cycles to regulate the quality and flow rate of the refrigerant entering the evaporator. In vapor-compression systems, as the condensed refrigerant undergoes this expansion, its pressure and temperature drop, and part of the liquid evaporates. We (researchers at Kansas State University) are developing a cooling cycle that instead pumps a high-pressure refrigerant through a supersonic converging-diverging nozzle. As the liquid refrigerant passes through the nozzle, its velocity reaches supersonic (or critical-flow) conditions, substantially decreasing the refrigerants pressure. This sharp pressure change vaporizes some of the refrigerant and absorbs heat from the surrounding conditions during this phase change. Due to the design of the nozzle, a shockwave trips the supersonic two-phase refrigerant back to the starting conditions, condensing the remaining vapor. The critical-flow refrigeration cycle would provide space cooling, similar to a chiller, by running a secondary fluid such as water or glycol over one or more nozzles. Rather than utilizing a compressor to raise the pressure of the refrigerant, as in a vapor-cycle system, the critical-flow cycle utilizes a high-pressure pump to drive refrigerant liquid through the cooling cycle. Additionally, the design of the nozzle can be tailored for a given refrigerant, such that environmentally benign substances can act as the working fluid. This refrigeration cycle is still in early-stage development with prototype development several years away. The complex multi-phase flow at supersonic conditions presents numerous challenges to fully understanding and modeling the cycle. With the support of DOE and venture-capital investors, initial research was conducted at PAX Streamline, and later, at Caitin. We (researchers at Kansas State University) have continued development of the cycle and have gained an in-depth understanding of the governing fundamental knowledge, based on the laws of physics and thermodynamics and verified with our testing results. Through this research, we are identifying optimal working fluid and operating conditions to eventually demonstrate the core technology for space cooling or other applications.

  13. Ultrasonic flow metering system

    DOE Patents [OSTI]

    Gomm, Tyler J. (Meridian, ID); Kraft, Nancy C. (Idaho Falls, ID); Mauseth, Jason A. (Pocatello, ID); Phelps, Larry D. (Pocatello, ID); Taylor, Steven C. (Idaho Falls, ID)

    2002-01-01T23:59:59.000Z

    A system for determining the density, flow velocity, and mass flow of a fluid comprising at least one sing-around circuit that determines the velocity of a signal in the fluid and that is correlatable to a database for the fluid. A system for determining flow velocity uses two of the inventive circuits with directional transmitters and receivers, one of which is set at an angle to the direction of flow that is different from the others.

  14. Heat flow and geothermal studies in the state of Washington

    SciTech Connect (OSTI)

    Blackwell, D.D.; Steele, J.L.; Kelley, S.A.

    1985-08-01T23:59:59.000Z

    Existing geothermal gradient and heat flow data for the state of Washington are summarized. In addition, information on mean-annual ground surface temperatures is included. The data consist of accurate, detailed temperature-depth measurements in selected available holes throughout the state of Washington made between 1979 and 1982. Measurements of thermal conductivity on selected rock samples from these drill holes and ancillary information required to assess the significance of the data and calculate heat flow values were obtained as well. Information is presented on the mean-annual ground-surface temperatures throughout the state of Washington. 32 refs., 15 figs., 4 tabs.

  15. No steady water waves of small amplitude are supported by a shear flow with still free surface

    E-Print Network [OSTI]

    Vladimir Kozlov; Nikolay Kuznetsov

    2012-09-17T23:59:59.000Z

    The two-dimensional free-boundary problem describing steady gravity waves with vorticity on water of finite depth is considered. It is proved that no small-amplitude waves are supported by a horizontal shear flow whose free surface is still in a coordinate frame such that the flow is time-independent in it. The class of vorticity distributions for which such flows exist includes all positive constant distributions, as well as linear and quadric ones with arbitrary positive coefficients.

  16. Elbow mass flow meter

    DOE Patents [OSTI]

    McFarland, Andrew R. (College Station, TX); Rodgers, John C. (Santa Fe, NM); Ortiz, Carlos A. (Bryan, TX); Nelson, David C. (Santa Fe, NM)

    1994-01-01T23:59:59.000Z

    Elbow mass flow meter. The present invention includes a combination of an elbow pressure drop generator and a shunt-type mass flow sensor for providing an output which gives the mass flow rate of a gas that is nearly independent of the density of the gas. For air, the output is also approximately independent of humidity.

  17. Plug-in Hybrid Initiative

    SciTech Connect (OSTI)

    Goodman, Angie; Moore, Ray; Rowden, Tim

    2013-09-27T23:59:59.000Z

    Our main project objective was to implement Plug-in Electric Vehicles (PEV) and charging infrastructure into our electric distribution service territory and help reduce barriers in the process. Our research demonstrated the desire for some to be early adopters of electric vehicles and the effects lack of education plays on others. The response of early adopters was tremendous: with the initial launch of our program we had nearly 60 residential customers interested in taking part in our program. However, our program only allowed for 15 residential participants. Our program provided assistance towards purchasing a PEV and installation of Electric Vehicle Supply Equipment (EVSE). The residential participants have all come to love their PEVs and are more than enthusiastic about promoting the many benefits of driving electric.

  18. Direct laser initiation of PETN

    SciTech Connect (OSTI)

    Early, J. W. (James W.); Kennedy, J. E. (James E.)

    2001-01-01T23:59:59.000Z

    In the early 1970s Yang and Menichelli demonstrated that direct laser illumination of low-density secondary explosive prr:ssings through a transparent window could produce detonation. 'The energy requirement for threshold initiation of detonation was reduced when a thin metal coating of metal covered the side of the window against which the low-density explosive was pressed. We have obtained experimental results that are in general agreement with the results of Renllund, Stanton and Trott (1 989) and recent: work by Nagayama, hou and Nakahara (2001). We report exploration of the effects of laser beam diameter, PEiTN density and specific surface area, and thickness of a titanium coating on the window.

  19. Hot spot-derived shock initiation phenomena in heterogeneous nitromethane

    SciTech Connect (OSTI)

    Dattelbaum, Dana M [Los Alamos National Laboratory; Sheffield, Stephen A [Los Alamos National Laboratory; Stahl, David B [Los Alamos National Laboratory; Dattelbaum, Andrew M [Los Alamos National Laboratory

    2009-01-01T23:59:59.000Z

    The addition of solid silica particles to gelled nitromethane offers a tractable model system for interrogating the role of impedance mismatches as one type of hot spot 'seed' on the initiation behaviors of explosive formulations. Gas gun-driven plate impact experiments are used to produce well-defined shock inputs into nitromethane-silica mixtures containing size-selected silica beads at 6 wt%. The Pop-plots or relationships between shock input pressure and rundistance (or time)-to-detonation for mixtures containing small (1-4 {micro}m) and large (40 {micro}m) beads are presented. Overall, the addition of beads was found to influence the shock sensitivity of the mixtures, with the smaller beads being more sensitizing than the larger beads, lowering the shock initiation threshold for the same run distance to detonation compared with neat nitromethane. In addition, the use of embedded electromagnetic gauges provides detailed information pertaining to the mechanism of the build-up to detonation and associated reactive flow. Of note, an initiation mechanism characteristic of homogeneous liquid explosives, such as nitromethane, was observed in the nitromethane-40 {micro}m diameter silica samples at high shock input pressures, indicating that the influence of hot spots on the initiation process was minimal under these conditions.

  20. Electrical initiation of an energetic nanolaminate film

    DOE Patents [OSTI]

    Tringe, Joseph W. (Walnut Creek, CA); Gash, Alexander E. (Brentwood, CA); Barbee, Jr., Troy W. (Palo Alto, CA)

    2010-03-30T23:59:59.000Z

    A heating apparatus comprising an energetic nanolaminate film that produces heat when initiated, a power source that provides an electric current, and a control that initiates the energetic nanolaminate film by directing the electric current to the energetic nanolaminate film and joule heating the energetic nanolaminate film to an initiation temperature. Also a method of heating comprising providing an energetic nanolaminate film that produces heat when initiated, and initiating the energetic nanolaminate film by directing an electric current to the energetic nanolaminate film and joule heating the energetic nanolaminate film to an initiation temperature.

  1. Depth of cure and compressive strength of dental composites cured with blue light emitting diodes (LEDs)

    E-Print Network [OSTI]

    Ashworth, Stephen H.

    Depth of cure and compressive strength of dental composites cured with blue light emitting diodes with either a light emitting diode (LED) based light curing unit (LCU) or a conventional halogen LCU do reserved. Keywords: Blue light emitting diodes; Light curing unit; Composites; Irradiance; Spectrum; Depth

  2. Method for determining depth and shape of a sub-surface conductive object

    DOE Patents [OSTI]

    Lee, D.O.; Montoya, P.C.; Wayland, Jr.

    1984-06-27T23:59:59.000Z

    The depth to and size of an underground object may be determined by sweeping a controlled source audio magnetotelluric (CSAMT) signal and locating a peak response when the receiver spans the edge of the object. The depth of the object is one quarter wavelength in the subsurface media of the frequency of the peak. 3 figures.

  3. Robust Head Pose Estimation by Fusing Time-of-Flight Depth and Color

    E-Print Network [OSTI]

    Wolberg, George

    . The key to our method is a model-based approach based on the fusion of color and time-of-flight depth data setup or knowledge of a pre-built model or training data. The use of additional depth data leads of user interaction, or controlling industrial machinery from a distance. Although many different systems

  4. Instruments and Methods Portable system for intermediate-depth ice-core drilling

    E-Print Network [OSTI]

    Howat, Ian M.

    Instruments and Methods Portable system for intermediate-depth ice-core drilling V. Zagorodnov, L Road, Columbus, Ohio 43210-1002, U.S.A. ABSTRACT. A lightweight, portable drilling system for coring up to 500 m depths has been developed and field-tested. The drilling system includes four major components

  5. Subsalt Depth Seismic Imaging and Structural Interpretation in Dumre Area, Albania

    E-Print Network [OSTI]

    Paris-Sud XI, Universit de

    Subsalt Depth Seismic Imaging and Structural Interpretation in Dumre Area, Albania A. Jardin1, F Interpretation in Dumre Area, Albania -- The challenge of seismic exploration in fold and thrust belt settings compte plus importante des donnes gologiques. Abstract -- Subsalt Depth Seismic Imaging and Structural

  6. The efficiency of depth discrimination for non-transparent and transparent stereoscopic surfaces

    E-Print Network [OSTI]

    Mamassian, Pascal

    The efficiency of depth discrimination for non-transparent and transparent stereoscopic surfaces investigate here how well human observers cope with stereo transparency by comparing their efficiency between transparent and opaque depth judgments. In two experiments, the efficiency measure was computed relative

  7. Computational model to evaluate port wine stain depth profiling using pulsed photothermal radiometry

    E-Print Network [OSTI]

    Choi, Bernard

    Computational model to evaluate port wine stain depth profiling using pulsed photothermal-thermal model to evaluate the use of pulsed photothermal radiometry (PPTR) for depth profiling of port wine the desired effect. A diagnostic measurement of the distribution of laser energy deposition and ensuing

  8. On the Symmetry Theory for Stokes Waves of Finite and In nite Depth

    E-Print Network [OSTI]

    Bath, University of

    function which satis#12;ed the correct kinematic and dynamic boundary conditions for water waves of steady water waves on ows with #12;nite depth. The inde- pendent variable was a periodic functionOn the Symmetry Theory for Stokes Waves of Finite and In#12;nite Depth J.F. Toland 1 Background

  9. A total of 377 peat age-depth relationships were used to quantify Holocene subsidence rates.

    E-Print Network [OSTI]

    Kulp, Mark

    A total of 377 peat age-depth relationships were used to quantify Holocene subsidence rates. Subsidence rates were calculated using peat ages calibrated to the sidereal time scale and burial depths a polynomial that relates the peat age to the position of sea-level at that time in the past. The "sea

  10. Filling holes in regional carbon budgets: Predicting peat depth in a north temperate lake district

    E-Print Network [OSTI]

    Turner, Monica G.

    Filling holes in regional carbon budgets: Predicting peat depth in a north temperate lake district] Peat deposits contain on the order of 1/6 of the Earth's terrestrial fixed carbon (C), but uncertainty in peat depth precludes precise estimates of peat C storage. To assess peat C in the Northern Highlands

  11. Prediction of end-depth ratio in open channels using genetic programming

    E-Print Network [OSTI]

    Fernandez, Thomas

    (EDR). Further effort is made to verify the applicability and superiority of this expressionD coefficient of determination EDR End-depth ratio (he/hc) GP Genetic Programming MRSS mean root of sum problem and to determine the end-depth ratio (EDR ¼ he/hc) in a wide range of channels. The Boussinesq

  12. Lower Bounds for Bounded Depth Frege Proofs via Pudlak-Buss Games

    E-Print Network [OSTI]

    Harsha, Prahladh

    19 Lower Bounds for Bounded Depth Frege Proofs via Pudlak-Buss Games ELI BEN-SASSON Technion. Our method uses the interpretation of proofs as two player games given by Pudlak and Buss. Our lower. 2010. Lower bounds for bounded depth Frege proofs via Pudlak- Buss games. ACM Trans. Comput. Logic, 11

  13. ESTIMATION OF SNOW ACCUMULATION IN ANTARCTICA USING AUTOMATED ACOUSTIC DEPTH GAUGE MEASUREMENTS

    E-Print Network [OSTI]

    Wisconsin at Madison, University of

    ESTIMATION OF SNOW ACCUMULATION IN ANTARCTICA USING AUTOMATED ACOUSTIC DEPTH GAUGE MEASUREMENTS microwave sounders, snow gauges, or radar are not feasible or not available in Antarctica at the present precipitation, remains largely unknown. Acoustic depth gauges (ADG) provide the only concrete real

  14. Lateral flow strip assay

    DOE Patents [OSTI]

    Miles, Robin R. (Danville, CA); Benett, William J. (Livermore, CA); Coleman, Matthew A. (Oakland, CA); Pearson, Francesca S. (Livermore, CA); Nasarabadi, Shanavaz L. (Livermore, CA)

    2011-03-08T23:59:59.000Z

    A lateral flow strip assay apparatus comprising a housing; a lateral flow strip in the housing, the lateral flow strip having a receiving portion; a sample collection unit; and a reagent reservoir. Saliva and/or buccal cells are collected from an individual using the sample collection unit. The sample collection unit is immersed in the reagent reservoir. The tip of the lateral flow strip is immersed in the reservoir and the reagent/sample mixture wicks up into the lateral flow strip to perform the assay.

  15. Producers post increase as prices plumb new depths

    SciTech Connect (OSTI)

    Young, I.

    1993-02-03T23:59:59.000Z

    European polypropylene (PP) producers are gearing up for yet another attempt to raise prices and stem their losses. Despite a string of pricing initiatives throughout 1992, the oversupplied PP market continued to sink. It slipped again in January, with many producers accusing their competitors of price cutting to raise sales volumes. The difference this time is that all the major players have stated their readiness to hike prices, while output has been cut back considerably to reduce stocks. Sentiment in the market is that prices simply cannot be allowed to go any lower. Neste Chemicals (Helsinki) has led the way by announcing a 40-pfennig/kg increase, effective March 1. Sven Svensson, Neste's v.p./PP, says the increase was announced early to allow converters to adjust the prices of their products. Huels (Marl, Germany) has since announced a 30 pfennig-40 pfennig/kg hike for February or March, Hoechst (Frankfurt) says it will go for a similar increase March 1, Amoco Chemical Europe (Geneva) has promised a hike effective February 1, while Himont (Milan) and Brussels-based Petrofina and Solvay confirm they will also be raising prices. There could be a greater sense of urgency now that propylene contracts have been raised for February. The lowest PP price so far reported in Europe has been BF12.50/kg (DM0.61/kg) for raffia-grade material in Belgium. The French market is about F2.20/kg; the UK at [Brit pounds]290/m.t.; German prices are slightly firmer at DM0.70/kg, with injection molding at about DM0.75/kg. PP copolymer prices have fallen precipitously since early December, with German levels dropping by 20 pfennig/kg, to about DM0.90/kg.

  16. Analysis of pressure drops under reversing flow conditions

    SciTech Connect (OSTI)

    Krazinski, J.L.; Holtz, R.E.; Uherka, K.L.; Lottes, P.A.

    1986-01-01T23:59:59.000Z

    This paper examines pressure-drop data from the Reversing Flow Test Facility (RFTF) at Argonne National Laboratory (ANL). The data comprise part of an initial series of measurements conducted with pressurized helium gas under reversing flow conditions. The characteristics of fluid pressure drops in compressible, reversing flows are discussed in the paper and compared with pressure-drop measurements for steady, incompressible flows. The methodology used to calculate instantaneous mass flows in the test section of the RFTF is summarized. The measured pressure drops are analyzed in terms of their frictional and inertial components. Pressure-drop data are presented for both tubes and wire mesh regenerators over a range of flow reversal frequencies. The results are discussed with reference to other experimental data and analytical models available in the literature. 10 refs., 6 figs., 2 tabs.

  17. CALIFORNIA SOLAR INITIATIVE-THERMAL PROGRAMHANDBOOK

    E-Print Network [OSTI]

    CALIFORNIA SOLAR INITIATIVE-THERMAL PROGRAMHANDBOOK CALIFORNIA PUBLIC UTILITIES California Solar Initiative Thermal Program Handbook i 1. Introduction to CSI-Thermal Program....................................................................................3 2.1.1 Host Customer

  18. Childhood Cancer Tracking Initiative in Massachusetts

    E-Print Network [OSTI]

    Childhood Cancer Tracking Initiative in Massachusetts: Developing a New Electronic Tool Presented (CEH) Massachusetts Department of Public Health (MDPH) #12;Childhood Cancer Tracking Initiative "Develop methods for linking environmental databases with childhood cancer incidence data to identify

  19. California Solar Initiative California Public Utilities Commission

    E-Print Network [OSTI]

    California Solar Initiative California Public Utilities Commission Staff Progress Report July 2008 #12;California Solar Initiative, CPUC Staff Progress Report, July 2008 Cover Photo Credits: Photographer: Andrew McKinney Name of Installer: Marin Solar System owner

  20. aeolicus initiates primer: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Juan A. Valiente Kroon 2007-12-20 203 Column Initialization 1 Initializing Distillation Column Models 1 Mathematics Websites Summary: Column Initialization 1 Initializing...

  1. a549 cells initial: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Juan A. Valiente Kroon 2007-12-20 93 Column Initialization 1 Initializing Distillation Column Models 1 Mathematics Websites Summary: Column Initialization 1 Initializing...

  2. aspa initial results: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Juan A. Valiente Kroon 2007-12-20 192 Column Initialization 1 Initializing Distillation Column Models 1 Mathematics Websites Summary: Column Initialization 1 Initializing...

  3. areas initial results: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Juan A. Valiente Kroon 2007-12-20 269 Column Initialization 1 Initializing Distillation Column Models 1 Mathematics Websites Summary: Column Initialization 1 Initializing...

  4. aachen aspa initial: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    A. Valiente Kroon 2007-12-20 137 Column Initialization 1 Initializing Distillation Column Models 1 Mathematics Websites Summary: Column Initialization 1 Initializing...

  5. aav initiator protein: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Juan A. Valiente Kroon 2007-12-20 94 Column Initialization 1 Initializing Distillation Column Models 1 Mathematics Websites Summary: Column Initialization 1 Initializing...

  6. aquifex aeolicus initiates: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Juan A. Valiente Kroon 2007-12-20 44 Column Initialization 1 Initializing Distillation Column Models 1 Mathematics Websites Summary: Column Initialization 1 Initializing...

  7. adenocarcinomas initial clinical: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Juan A. Valiente Kroon 2007-12-20 98 Column Initialization 1 Initializing Distillation Column Models 1 Mathematics Websites Summary: Column Initialization 1 Initializing...

  8. Voluntary Initiative: Partnering to Enhance Program Capacity...

    Energy Savers [EERE]

    to Enhance Program Capacity Better Buildings Residential Network Program Sustainability Peer Exchange Call Series: Voluntary Initiative: Partnering to Enhance Program...

  9. Clean Energy Manufacturing Initiative Industrial Efficiency and...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Industrial Efficiency and Energy Productivity Video Clean Energy Manufacturing Initiative Industrial Efficiency and Energy Productivity Video Addthis Description Industrial...

  10. Explosive laser light initiation of propellants

    DOE Patents [OSTI]

    Piltch, M.S.

    1993-05-18T23:59:59.000Z

    A improved initiator for artillery shell using an explosively generated laser light to uniformly initiate the propellent. A small quantity of a high explosive, when detonated, creates a high pressure and temperature, causing the surrounding noble gas to fluoresce. This fluorescence is directed into a lasing material, which lases, and directs laser light into a cavity in the propellant, uniformly initiating the propellant.

  11. California Solar Initiative California Public Utilities Commission

    E-Print Network [OSTI]

    California Solar Initiative California Public Utilities Commission Staff Progress Report January 2009 #12;2 California Solar Initiative CPUC Staff Progress Report - January 2009 The California Public progress on the California Solar Initiative, the country's largest solar incentive program. In January 2007

  12. California Solar Initiative California Public Utilities Commission

    E-Print Network [OSTI]

    California Solar Initiative California Public Utilities Commission Staff Progress Report October 2008 #12;2 California Solar Initiative CPUC Staff Progress Report - October 2008 The California Public progress on the California Solar Initiative, the country's largest solar incentive program. In January 2007

  13. AnalyzeHOLE: An Integrated Wellbore Flow Analysis Tool

    SciTech Connect (OSTI)

    Keith J. Halford

    2009-10-01T23:59:59.000Z

    Conventional interpretation of flow logs assumes that hydraulic conductivity is directly proportional to flow change with depth. However, well construction can significantly alter the expected relation between changes in fluid velocity and hydraulic conductivity. Strong hydraulic conductivity contrasts between lithologic intervals can be masked in continuously screened wells. Alternating intervals of screen and blank casing also can greatly complicate the relation between flow and hydraulic properties. More permeable units are not necessarily associated with rapid fluid-velocity increases. Thin, highly permeable units can be misinterpreted as thick and less permeable intervals or not identified at all. These conditions compromise standard flow-log interpretation because vertical flow fields are induced near the wellbore. AnalyzeHOLE, an integrated wellbore analysis tool for simulating flow and transport in wells and aquifer systems, provides a better alternative for simulating and evaluating complex well-aquifer system interaction. A pumping well and adjacent aquifer system are simulated with an axisymmetric, radial geometry in a two-dimensional MODFLOW model. Hydraulic conductivities are distributed by depth and estimated with PEST by minimizing squared differences between simulated and measured flows and drawdowns. Hydraulic conductivity can vary within a lithology but variance is limited with regularization. Transmissivity of the simulated system also can be constrained to estimates from single-well, pumping tests. Water-quality changes in the pumping well are simulated with simple mixing models between zones of differing water quality. These zones are differentiated by backtracking thousands of particles from the well screens with MODPATH. An Excel spreadsheet is used to interface the various components of AnalyzeHOLE by (1) creating model input files, (2) executing MODFLOW, MODPATH, PEST, and supporting FORTRAN routines, and (3) importing and graphically displaying pertinent results.

  14. Influence of a local change of depth on the behavior of bouncing oil drops

    E-Print Network [OSTI]

    Carmigniani, Remi; Symon, Sean; McKeon, Beverley J

    2013-01-01T23:59:59.000Z

    The work of Couder \\textit{et al} (see also Bush \\textit{et al}) inspired consideration of the impact of a submerged obstacle, providing a local change of depth, on the behavior of oil drops in the bouncing regime. In the linked videos, we recreate some of their results for a drop bouncing on a uniform depth bath of the same liquid undergoing vertical oscillations just below the conditions for Faraday instability, and show a range of new behaviors associated with change of depth. This article accompanies a fluid dynamics video entered into the Gallery of Fluid Motion of the 66th Annual Meeting of the APS Division of Fluid Dynamics.

  15. Measurement of the atmospheric muon depth intensity relation with the NEMO Phase-2 tower

    E-Print Network [OSTI]

    S. Aiello; F. Ameli; M. Anghinolfi; G. Barbarino; E. Barbarito; F. Barbato; N. Beverini; S. Biagi; B. Bouhadef; C. Bozza; G. Cacopardo; M. Calamai; C. Cal; A. Capone; F. Caruso; A. Ceres; T. Chiarusi; M. Circella; R. Cocimano; R. Coniglione; M. Costa; G. Cuttone; C. D'Amato; A. D'Amico; G. De Bonis; V. De Luca; N. Deniskina; G. De Rosa; F. Di Capua; C. Distefano; P. Fermani; L. A. Fusco; F. Garufi; V. Giordano; A. Gmerk; R. Grasso; G. Grella; C. Hugon; M. Imbesi; V. Kulikovskiy; G. Larosa; D. Lattuada; K. P. Leismueller; E. Leonora; P. Litrico; A. Lonardo; F. Longhitano; D. Lo Presti; E. Maccioni; A. Margiotta; A. Martini; R. Masullo; P. Migliozzi; E. Migneco; A. Miraglia; C. M. Mollo; M. Mongelli; M. Morganti; P. Musico; M. Musumeci; C. A. Nicolau; A. Orlando; R. Papaleo; C. Pellegrino; M. G. Pellegriti; C. Perrina; P. Piattelli; C. Pugliatti; S. Pulvirenti; A. Orselli; F. Raffaelli; N. Randazzo; G. Riccobene; A. Rovelli; M. Sanguineti; P. Sapienza; V. Sciacca; I. Sgura; F. Simeone; V. Sipala; F. Speziale; M. Spina; A. Spitaleri; M. Spurio; S. M. Stellacci; M. Taiuti; G. Terreni; L. Trasatti; A. Trovato; C. Ventura; P. Vicini; S. Viola; D. Vivolo

    2014-12-03T23:59:59.000Z

    The results of the analysis of the data collected with the NEMO Phase-2 tower, deployed at 3500 m depth about 80 km off-shore Capo Passero (Italy), are presented. Cherenkov photons detected with the photomultipliers tubes were used to reconstruct the tracks of atmospheric muons. Their zenith-angle distribution was measured and the results compared with Monte Carlo simulations. An evaluation of the systematic effects due to uncertainties on environmental and detector parameters is also included. The associated depth intensity relation was evaluated and compared with previous measurements and theoretical predictions. With the present analysis, the muon depth intensity relation has been measured up to 13 km of water equivalent.

  16. Colorado Heat Flow Data from IHFC

    SciTech Connect (OSTI)

    Zehner, Richard E.

    2012-02-01T23:59:59.000Z

    Citation Information: Originator: Earth Science &Observation Center (ESOC), CIRES, University of Colorado at Boulder Originator: The International Heat Flow Commission (IHFC) Publication Date: 2012 Title: Colorado IHFC Data Edition: First Publication Information: Publication Place: Earth Science & Observation Center, Cooperative Institute for Research in Environmental Science (CIRES), University of Colorado, Boulder Publisher: Earth Science &Observation Center (ESOC), CIRES, University of Colorado at Boulder Description: Abstract: This layer contains the heat flow sites and data of the State of Colorado compiled from the International Heat Flow Commission (IHFC) of the International Association of Seismology and Physics of the Earth's Interior (IASPEI) global heat flow database (www.heatflow.und.edu/index2.html). The data include different items: Item number, descriptive code, name of site, latitude and longitude, elevation, depth interval, number of temperature data, temperature gradient, number of conductivity measurement, average conductivity, number of heat generation measurements, average heat production, heat flow, number of individual sites, references, and date of publication. Spatial Domain: Extent: Top: 4522121.800672 m Left: 165356.134075 m Right: 621836.776246 m Bottom: 4097833.419676 m Contact Information: Contact Organization: Earth Science &Observation Center (ESOC), CIRES, University of Colorado at Boulder Contact Person: Khalid Hussein Address: CIRES, Ekeley Building Earth Science & Observation Center (ESOC) 216 UCB City: Boulder State: CO Postal Code: 80309-0216 Country: USA Contact Telephone: 303-492-6782 Spatial Reference Information: Coordinate System: Universal Transverse Mercator (UTM) WGS1984 Zone 13N False Easting: 500000.00000000 False Northing: 0.00000000 Central Meridian: -105.00000000 Scale Factor: 0.99960000 Latitude Of Origin: 0.00000000 Linear Unit: Meter Datum: World Geodetic System 1984 (WGS 1984) Prime Meridian: Greenwich Angular Unit: Degree Digital Form: Format Name: Shape file

  17. Turbulent flow in graphene

    E-Print Network [OSTI]

    Kumar S. Gupta; Siddhartha Sen

    2010-06-05T23:59:59.000Z

    We demonstrate the possibility of a turbulent flow of electrons in graphene in the hydrodynamic region, by calculating the corresponding turbulent probability density function. This is used to calculate the contribution of the turbulent flow to the conductivity within a quantum Boltzmann approach. The dependence of the conductivity on the system parameters arising from the turbulent flow is very different from that due to scattering.

  18. On integrating LES and laboratory turbulent flow experiments

    SciTech Connect (OSTI)

    Grinstein, Fernando Franklin [Los Alamos National Laboratory

    2008-01-01T23:59:59.000Z

    Critical issues involved in large eddy simulation (LES) experiments relate to the treatment of unresolved subgrid scale flow features and required initial and boundary condition supergrid scale modelling. The inherently intrusive nature of both LES and laboratory experiments is noted in this context. Flow characterization issues becomes very challenging ones in validation and computational laboratory studies, where potential sources of discrepancies between predictions and measurements need to be clearly evaluated and controlled. A special focus of the discussion is devoted to turbulent initial condition issues.

  19. Water velocity and the nature of critical flow in large rapids on the Colorado River, Utah

    E-Print Network [OSTI]

    Christopher S. Magirl,1 Jeffrey W. Gartner,2 Graeme M. Smart,3 and Robert H. Webb2 Received 13 January 2009-surface velocity and depth soundings alone. Citation: Magirl, C. S., J. W. Gartner, G. M. Smart, and R. H. Webb quantitative data on rapids. [3] Tinkler [1997] used an electromagnetic current meter to measure flow in a fast

  20. Behavior of a particle-laden flow in a spiral channel Sungyon Lee,1, 2

    E-Print Network [OSTI]

    Stokes, Yvonne

    work on gravity-driven monodis- perse slurries on an incline that empirically accounts for this coupling, we consider a monodisperse particle slurry of small depth flowing down a rectangular channel particle separators, used primarily by the mineral and coal processing industries [1, 2], in this paper we

  1. Behavior of a particle-laden flow in a spiral channel Sungyon Lee,1, 2

    E-Print Network [OSTI]

    Bertozzi, Andrea L.

    slurries on an incline that empirically accounts for this coupling, we consider a monodisperse particle slurry of small depth flowing down a rectangular channel that is helically wound around a vertical axis particle separators, used primarily by the mineral and coal processing industries [1, 2], in this paper we

  2. Spring temperatures in the Sagehen Basin, Sierra Nevada, CA: implications for heat flow and groundwater circulation

    E-Print Network [OSTI]

    Manga, Michael

    on groundwater flow depths within the basin. An analytical model based on these constraints indicates@berkeley.edu. Tel: +1 510 642 2288. Fax: +1 510 643 9980. Geofluids (2009) 9, 195­207 INTRODUCTION Groundwater and groundwater circulation MARIA BRUMM, CHI-YUEN WANG AND MICHAEL MANGA Earth and Planetary Science, University

  3. On-line river flow forecasting with `Hydromax' : successes and challenges after

    E-Print Network [OSTI]

    Bastin, Georges

    frequent on-line field measurements of rainfall depths in raingauges, weather radar data, wa- ter levels in 88 automatic telemetered rain- gauges and two weather radars. Preprints of the 15th IFAC Symposium BOCQ EAU D'HEURE Rain Gauges River flow meas. stations MEUSE M EUSE Fig. 1. The Meuse river basin

  4. Using laboratory flow experiments and reactive chemical transport modeling for designing waterflooding of the Agua Fria Reservoir, Poza Rica-Altamira Field, Mexico

    E-Print Network [OSTI]

    Birkle, P.

    2009-01-01T23:59:59.000Z

    into the Agua Fra reservoir, data from laboratory flowChemical analytical data from reservoir water were appliedapplied as input data for initial reservoir conditions. In

  5. Longitudinal Decorrelation of Anisotropic Flows in Heavy-ion Collisions at the CERN Large Hadron Collider

    E-Print Network [OSTI]

    Long-Gang Pang; Guang-You Qin; Victor Roy; Xin-Nian Wang; Guo-Liang Ma

    2015-04-22T23:59:59.000Z

    Fluctuations in the initial transverse energy-density distribution lead to anisotropic flows as observed in central high-energy heavy-ion collisions. Studies of longitudinal fluctuations of the anisotropic flows can shed further light on the initial conditions and dynamical evolution of the hot quark-gluon matter in these collisions. Correlations between anisotropic flows with varying pseudorapidity gaps in Pb+Pb collisions at the CERN Large Hadron Collider are investigated using both an event-by-event (3+1)-D ideal hydrodynamical model with fluctuating initial conditions and the a multiphase transport (AMPT) Monte Carlo model for high-energy heavy-ion collisions. Anisotropic flows at different pseudorapidities are found to become significantly decorrelated with increasing pseudo-rapidity gaps due to longitudinal fluctuations in the initial states of heavy-ion collisions. The longitudinal correlation of the elliptic flow shows a strong centrality dependence while the correlation of the triangular flow is independent of the centrality. Longitudinal fluctuations as a source of the decorrelation are further shown to consist of a twist or gradual rotation in flow angles between the forward and backward direction and additional fluctuations on top of the twist. Within the AMPT model, longitudinal correlations of anisotropic flows are also found to depend on the value of partonic cross sections. The implicatiosn of constraining the initial conditions and shear viscosity to entropy density ratio of the partonic matter in high-energy heavy-ion collisions are also discussed.

  6. Risk assessment and evaluation of the conductor setting depth in shallow water, Gulf of Mexico

    E-Print Network [OSTI]

    Tu, Yong B.

    2006-08-16T23:59:59.000Z

    Factors related to operations of a well that impact drilling uncertainties in the shallow water region of the Gulf of Mexico (GOM) can be directly linked to the site specific issues; such as water depth and local geological ...

  7. Influence of planting depth on landscape establishment of container-grown trees

    E-Print Network [OSTI]

    Bryan, Donita Lynn

    2009-05-15T23:59:59.000Z

    and productivity (sustainability) of trees within terrestrial ecosystems. Tree planting depth, i.e. location of the root collar relative to soil grade, is of particular concern for tree growth, development, and performance in the landscape. A series of model...

  8. Use of Rapid Temperature Measurements at a 2-Meter Depth to Augment...

    Open Energy Info (EERE)

    Temperature Gradient Drilling Jump to: navigation, search OpenEI Reference LibraryAdd to library Conference Paper: Use of Rapid Temperature Measurements at a 2-Meter Depth to...

  9. Depth inversion for nonlinear waves shoaling over a barred-beach 1

    E-Print Network [OSTI]

    Grilli, Stéphan T.

    and calibrated for mild slopes are applied to the barred-beach. Expectedly, errors on depth prediction occur techniques such as Synthetic Aperture Radar (SAR), are still quite problematic under the current state

  10. Bioluminescence in a complex coastal environment: 2. Prediction of bioluminescent source depth from spectral

    E-Print Network [OSTI]

    Moline, Mark

    of a passive method (as opposed to active methods such as RADAR or LIDAR) to identify hostile ships, submarines this relative importance [Nealson, 1993]. Therefore the depth distribution of bioluminescent organisms is of eco

  11. PROOF COMPLEXITY IN ALGEBRAIC SYSTEMS AND BOUNDED DEPTH FREGE SYSTEMS WITH

    E-Print Network [OSTI]

    Krajíèek, Jan

    PROOF COMPLEXITY IN ALGEBRAIC SYSTEMS AND BOUNDED DEPTH FREGE SYSTEMS WITH MODULAR COUNTING S. Buss; 2 S. Buss et al. NP 6= coNP . Despite extensive research (see the expository articles Buss (1995b

  12. Vehicle Technologies Office Merit Review 2014: Advanced Technology Vehicle Lab Benchmarking- Level 2 (in-depth)

    Broader source: Energy.gov [DOE]

    Presentation given by Argonne National Laboratory at 2014 DOE Hydrogen and Fuel Cells Program and Vehicle Technologies Office Annual Merit Review and Peer Evaluation Meeting about level 2 (in-depth...

  13. Clean Energy Infrastructure Educational Initiative

    SciTech Connect (OSTI)

    Hallinan, Kevin; Menart, James; Gilbert, Robert

    2012-08-31T23:59:59.000Z

    The Clean Energy Infrastructure Educational Initiative represents a collaborative effort by the University of Dayton, Wright State University and Sinclair Community College. This effort above all aimed to establish energy related programs at each of the universities while also providing outreach to the local, state-wide, and national communities. At the University of Dayton, the grant has aimed at: solidfying a newly created Master??s program in Renewable and Clean Energy; helping to establish and staff a regional sustainability organization for SW Ohio. As well, as the prime grantee, the University of Dayton was responsible for insuring curricular sharing between WSU and the University of Dayton. Finally, the grant, through its support of graduate students, and through cooperation with the largest utilities in SW Ohio enabled a region-wide evaluation of over 10,000 commercial building buildings in order to identify the priority buildings in the region for energy reduction. In each, the grant has achieved success. The main focus of Wright State was to continue the development of graduate education in renewable and clean energy. Wright State has done this in a number of ways. First and foremost this was done by continuing the development of the new Renewable and Clean Energy Master??s Degree program at Wright State . Development tasks included: continuing development of courses for the Renewable and Clean Energy Master??s Degree, increasing the student enrollment, and increasing renewable and clean energy research work. The grant has enabled development and/or improvement of 7 courses. Collectively, the University of Dayton and WSU offer perhaps the most comprehensive list of courses in the renewable and clean energy area in the country. Because of this development, enrollment at WSU has increased from 4 students to 23. Secondly, the grant has helped to support student research aimed in the renewable and clean energy program. The grant helped to solidify new research in the renewable and clean energy area. The educational outreach provided as a result of the grant included activities to introduce renewable and clean energy design projects into the Mechanical and Materials Engineering senior design class, the development of a geothermal energy demonstration unit, and the development of renewable energy learning modules for high school students. Finally, this grant supported curriculum development by Sinclair Community College for seven new courses and acquisition of necessary related instrumentation and laboratory equipment. These new courses, EGV 1201 Weatherization Training, EGV 1251 Introduction to Energy Management Principles, EGV 2301 Commercial and Industrial Assessment, EGV 2351 LEED Green Associate Exam Preparation, EGV 2251 Energy Control Strategies, EGV Solar Photovoltaic Design and Installation, and EGV Solar Thermal Systems, enable Sinclair to offer complete Energy Technology Certificate and an Energy Management Degree programs. To date, 151 students have completed or are currently registered in one of the seven courses developed through this grant. With the increasing interest in the Energy Management Degree program, Sinclair has begun the procedure to have the program approved by the Ohio Board of Regents.

  14. Partnering: an in-depth comparison of its elements to quality improvement principles

    E-Print Network [OSTI]

    Lozada, Anthony David

    1992-01-01T23:59:59.000Z

    PARTNERING: AN IN-DEPTH COMPARISON OF ITS ELEMENTS TO QUALITY IMPROVEMENT PRINCIPLES A Thesis by ANTHONY DAVID LOZADA Submitted to the Office of Graduate Studies of Texas AIIrM University in partial fulfillment of the requirements... for the degree of MASTER OF SCIENCE December 1992 Major Subject: Civil Engineering PARTNERING: AN IN-DEPTH COMPARISON OF ITS ELEMENTS TO QUALITY IMPROVEMENT PRINCIPLES A Thesis by ANTHONY DAVID LOZADA Approved as to style and content by: Donald A...

  15. Non-destructive in-situ method and apparatus for determining radionuclide depth in media

    DOE Patents [OSTI]

    Xu, X. George (Clifton Park, NY); Naessens, Edward P. (West Point, NY)

    2003-01-01T23:59:59.000Z

    A non-destructive method and apparatus which is based on in-situ gamma spectroscopy is used to determine the depth of radiological contamination in media such as concrete. An algorithm, Gamma Penetration Depth Unfolding Algorithm (GPDUA), uses point kernel techniques to predict the depth of contamination based on the results of uncollided peak information from the in-situ gamma spectroscopy. The invention is better, faster, safer, and/cheaper than the current practice in decontamination and decommissioning of facilities that are slow, rough and unsafe. The invention uses a priori knowledge of the contaminant source distribution. The applicable radiological contaminants of interest are any isotopes that emit two or more gamma rays per disintegration or isotopes that emit a single gamma ray but have gamma-emitting progeny in secular equilibrium with its parent (e.g., .sup.60 Co, .sup.235 U, and .sup.137 Cs to name a few). The predicted depths from the GPDUA algorithm using Monte Carlo N-Particle Transport Code (MCNP) simulations and laboratory experiments using .sup.60 Co have consistently produced predicted depths within 20% of the actual or known depth.

  16. Measurement of sound speed vs. depth in South Pole ice: pressure waves and shear waves

    SciTech Connect (OSTI)

    IceCube Collaboration; Klein, Spencer

    2009-06-04T23:59:59.000Z

    We have measured the speed of both pressure waves and shear waves as a function of depth between 80 and 500 m depth in South Pole ice with better than 1% precision. The measurements were made using the South Pole Acoustic Test Setup (SPATS), an array of transmitters and sensors deployed in the ice at the South Pole in order to measure the acoustic properties relevant to acoustic detection of astrophysical neutrinos. The transmitters and sensors use piezoceramics operating at {approx}5-25 kHz. Between 200 m and 500 m depth, the measured profile is consistent with zero variation of the sound speed with depth, resulting in zero refraction, for both pressure and shear waves. We also performed a complementary study featuring an explosive signal propagating vertically from 50 to 2250 m depth, from which we determined a value for the pressure wave speed consistent with that determined for shallower depths, higher frequencies, and horizontal propagation with the SPATS sensors. The sound speed profile presented here can be used to achieve good acoustic source position and emission time reconstruction in general, and neutrino direction and energy reconstruction in particular. The reconstructed quantities could also help separate neutrino signals from background.

  17. Microelectromechanical flow control apparatus

    DOE Patents [OSTI]

    Okandan, Murat (NE Albuquerque, NM)

    2009-06-02T23:59:59.000Z

    A microelectromechanical (MEM) flow control apparatus is disclosed which includes a fluid channel formed on a substrate from a first layer of a nonconducting material (e.g. silicon nitride). A first electrode is provided on the first layer of the nonconducting material outside the flow channel; and a second electrode is located on a second layer of the nonconducting material above the first layer. A voltage applied between the first and second electrodes deforms the fluid channel to increase its cross-sectional size and thereby increase a flow of a fluid through the channel. In certain embodiments of the present invention, the fluid flow can be decreased or stopped by applying a voltage between the first electrode and the substrate. A peristaltic pumping of the fluid through the channel is also possible when the voltage is applied in turn between a plurality of first electrodes and the substrate. A MEM flow control assembly can also be formed by providing one or more MEM flow control devices on a common substrate together with a submicron filter. The MEM flow control assembly can optionally include a plurality of pressure sensors for monitoring fluid pressure and determining flow rates through the assembly.

  18. Response of initial field to stiffness perturbation

    E-Print Network [OSTI]

    Chen-Wu Wu

    2014-03-19T23:59:59.000Z

    Response of initial elastic field to stiffness perturbation and its possible application is investigated. Virtual thermal softening is used to produce the stiffness reduction for demonstration. It is interpreted that the redistribution of the initial strain will be developed by the non-uniform temperature elevation, as which leads to the non-uniform reduction of the material stiffness. Therefore, the initial filed is related to the stiffness perturbation and incremental field in a matrix form after eliminating the thermal expansion effect.

  19. Initialization of hydrodynamics in relativistic heavy ion collisions with an energy-momentum transport model

    E-Print Network [OSTI]

    V. Yu. Naboka; S. V. Akkelin; Iu. A. Karpenko; Yu. M. Sinyukov

    2015-01-14T23:59:59.000Z

    A key ingredient of hydrodynamical modeling of relativistic heavy ion collisions is thermal initial conditions, an input that is the consequence of a pre-thermal dynamics which is not completely understood yet. In the paper we employ a recently developed energy-momentum transport model of the pre-thermal stage to study influence of the alternative initial states in nucleus-nucleus collisions on flow and energy density distributions of the matter at the starting time of hydrodynamics. In particular, the dependence of the results on isotropic and anisotropic initial states is analyzed. It is found that at the thermalization time the transverse flow is larger and the maximal energy density is higher for the longitudinally squeezed initial momentum distributions. The results are also sensitive to the relaxation time parameter, equation of state at the thermalization time, and transverse profile of initial energy density distribution: Gaussian approximation, Glauber Monte Carlo profiles, etc. Also, test results ensure that the numerical code based on the energy-momentum transport model is capable of providing both averaged and fluctuating initial conditions for the hydrodynamic simulations of relativistic nuclear collisions.

  20. Infrared photocarrier radiometry of semiconductors: Physical principles, quantitative depth profilometry, and scanning imaging of deep subsurface electronic defects

    E-Print Network [OSTI]

    Mandelis, Andreas

    - sorption of the incident beam and nonradiative heating. The PCR theory is presented as infrared depthInfrared photocarrier radiometry of semiconductors: Physical principles, quantitative depth May 2003 Laser-induced infrared photocarrier radiometry PCR is introduced theoretically

  1. Relationships between inherent optical properties and the depth of penetration of solar radiation in optically complex coastal waters

    E-Print Network [OSTI]

    Strathclyde, University of

    Relationships between inherent optical properties and the depth of penetration of solar radiation optical properties and the depth of penetration of solar radiation in optically complex coastal waters, J

  2. Sandia National Laboratories: Advanced Manufacturing Initiative

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Manufacturing Initiative (AMI) is a multiple-year, 3-way collaboration among TPI Composites, Iowa State University, and Sandia National Laboratories. The goal of this...

  3. TN Energy Efficient Schools Initiative GSHP Program

    Broader source: Energy.gov (indexed) [DOE]

    TN Energy Efficient Schools Initiative GSHP Program Principal Investigator : Terry E. Townsend, P.E. FASHRAE, LEEDAP Ground Source Heat Pumps Demonstration Projects May 19, 2010...

  4. Green Manufacturing Initiative Annual Report 2010

    E-Print Network [OSTI]

    de Doncker, Elise

    Green Manufacturing Initiative Annual Report 2010 Dr. John Patten Dr. David Meade May 3, 2011 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Energy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Herman Miller Energy Center . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

  5. SunShot Initiative | Department of Energy

    Broader source: Energy.gov (indexed) [DOE]

    address below. Subscribe SUNSHOT SUBPROGRAMS Concentrating Solar Power Photovoltaics Soft Costs Systems Integration Technology to Market Quick Links 2014 SunShot Initiative...

  6. Innovative Manufacturing Initiative Recognition Day, Advanced...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Publications Innovative Manufacturing Initiative Recognition Day Advanced Manufacturing Office Overview Unlocking the Potential of Additive Manufacturing in the Fuel Cells Industry...

  7. Climate VISION: Private Sector Initiatives: Electric Power

    Office of Scientific and Technical Information (OSTI)

    Letters of IntentAgreements The electric power sector participates in the Climate VISION program through the Electric Power Industry Climate Initiative (EPICI) and its Power...

  8. Richmond Electric Vehicle Initiative Electric Vehicle Readiness...

    Broader source: Energy.gov (indexed) [DOE]

    reflect those of the United States Government or any agency thereof. Richmond Electric Vehicle Initiative Readiness Plan | 1 Table of Contents Executive Summary...

  9. Rotary mode system initial instrument calibration

    SciTech Connect (OSTI)

    Johns, B.R.

    1994-10-01T23:59:59.000Z

    The attached report contains the vendor calibration procedures used for the initial instrument calibration of the rotary core sampling equipment. The procedures are from approved vendor information files.

  10. INITIAL COMMISSIONING OF NDCX-II

    E-Print Network [OSTI]

    Lidia, S.

    2013-01-01T23:59:59.000Z

    INITIAL COMMISSIONING OF NDCX-II* S. Lidia # , D. Arbelaez,the results of early commissioning studies that characterizeschematic and commissioning phases. The commissioning phases

  11. Jefferson Lab accelerator upgrade completed: Initial operations...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    DOE to begin initial operations of the Continuous Electron Beam Accelerator Facility (CEBAF) as part of its ongoing 338 million upgrade. With the approval of Critical...

  12. Revolving Economic Development and Initiative (South Dakota)

    Broader source: Energy.gov [DOE]

    The Revolving Economic Development and Initiative (REDI) provides low interest loans to start-up firms, businesses that are expanding or relocating and local economic development corporations. The...

  13. commercial buildings initiative | netl.doe.gov

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Commercial Buildings Initiative The DOE Building Technologies Office works with the commercial building industry to accelerate the use of energy efficiency technologies in both...

  14. DOE Science Education Initiative Announced Today | Jefferson...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Middle School students confer during JLab's inaugural Virginia Regional Middle School Science Bowl. DOE Science Education Initiative Announced Today July 8, 2004 Today, U.S....

  15. Blue Ball Properties initiating responsible environmental stewardship

    E-Print Network [OSTI]

    McColl, Jayne E.; Daly, Dorothy

    2003-01-01T23:59:59.000Z

    2002. Environmental Assessment, Blue Ball Properties Areamarkers at the site. Photo 1. Blue Ball Dairy Barn. Photo 2.BLUE BALL PROPERTIES INITIATING RESPONSIBLE ENVIRONMENTAL

  16. Green Initiatives Keep Hanford Site Environmentally Responsible...

    Energy Savers [EERE]

    and increasing recycling on site. "We at MSA are very proud to spearhead the site's green initiatives," said Lori Fritz, MSA's vice president of energy & environmental...

  17. SunShot Initiative | Department of Energy

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    SunShot Initiative Funding Opportunity: Solar Training and Education for Professionals Funding Opportunity: Solar Training and Education for Professionals This new funding program...

  18. Climate VISION: Private Sector Initiatives: Forest Products

    Office of Scientific and Technical Information (OSTI)

    Forest & Paper Association (AF&PA) supports the Climate VISION initiative to address climate change through enhanced research in technology and science, incentives, and...

  19. Strategic Initiatives Work Group | Department of Energy

    Broader source: Energy.gov (indexed) [DOE]

    DOE, contractor and worker representatives, provides a forum for information sharing; data collection and analysis; as well as, identifying best practices and initiatives to...

  20. Relativistic Radiative Flow in a Luminous Disk II

    E-Print Network [OSTI]

    Jun Fukue; Chizuru Akizuki

    2007-11-03T23:59:59.000Z

    Radiatively-driven transfer flow perpendicular to a luminous disk is examined in the relativistic regime of $(v/c)^2$, taking into account the gravity of the central object. The flow is assumed to be vertical, and the gas pressure as well as the magnetic field are ignored. Using a velocity-dependent variable Eddington factor, we can solve the rigorous equations of the relativistic radiative flow accelerated up to the {\\it relativistic} speed. For sufficiently luminous cases, the flow resembles the case without gravity. For less-luminous or small initial radius cases, however, the flow velocity decreases due to gravity. Application to a supercritical accretion disk with mass loss is briefly discussed.

  1. ARM: 10-minute Raman Lidar: aerosol depolarization profiles and single layer cloud optical depths from first Turner algorithm

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Newsom, Rob; Goldsmith, John

    10-minute Raman Lidar: aerosol depolarization profiles and single layer cloud optical depths from first Turner algorithm

  2. Prospects for river discharge and depth estimation through assimilation of swath-altimetry into a raster-based hydrodynamics

    E-Print Network [OSTI]

    Howat, Ian M.

    Prospects for river discharge and depth estimation through assimilation of swath water depth and discharge, reducing the discharge RMSE from 23.2% to 10.0% over an 84-day simulation. Clark, D. P. Lettenmaier, and D. E. Alsdorf (2007), Prospects for river discharge and depth estimation

  3. Shape and flow fluctuations in ultra-central Pb+Pb collisions at the LHC

    E-Print Network [OSTI]

    Chun Shen; Zhi Qiu; Ulrich Heinz

    2015-05-07T23:59:59.000Z

    In ultra-central heavy-ion collisions, anisotropic hydrodynamic flow is generated by density fluctuations in the initial state rather than by geometric overlap effects. For a given centrality class, the initial fluctuation spectrum is sensitive to the method chosen for binning the events into centrality classes. We show that sorting events by total initial entropy or by total final multiplicity yields event classes with equivalent statistical fluctuation properties, in spite of viscous entropy production during the fireball evolution. With this initial entropy-based centrality definition we generate several classes of ultra-central Pb+Pb collisions at LHC energies and evolve the events using viscous hydrodynamics with non-zero shear but vanishing bulk viscosity. Comparing the predicted anisotropic flow coefficients for charged hadrons with CMS data we find that both the Monte Carlo Glauber (MC-Glb) and Monte Carlo Kharzeev-Levin-Nardi (MC-KLN) models produce initial fluctuation spectra that are incompatible with the measured final anisotropic flow power spectrum, for any choice of the specific shear viscosity. In spite of this failure, we show that the hydrodynamic model can qualitatively explain, in terms of event-by-event fluctuations of the anisotropic flow coefficients and flow angles, the breaking of flow factorization for elliptic, triangular and quadrangular flow measured by the CMS experiment. For elliptic flow, this factorization breaking is large in ultra-central collisions. We conclude that the bulk of the experimentally observed flow factorization breaking effects are qualitatively explained by hydrodynamic evolution of initial-state fluctuations, but that their quantitative description requires a better understanding of the initial fluctuation spectrum.

  4. Shape and flow fluctuations in ultra-central Pb+Pb collisions at the LHC

    E-Print Network [OSTI]

    Chun Shen; Zhi Qiu; Ulrich Heinz

    2015-02-16T23:59:59.000Z

    In ultra-central heavy-ion collisions, anisotropic hydrodynamic flow is generated by density fluctuations in the initial state rather than by geometric overlap effects. For a given centrality class, the initial fluctuation spectrum is sensitive to the method chosen for binning the events into centrality classes. We show that sorting events by total initial entropy or by total final multiplicity yields event classes with equivalent statistical fluctuation properties, in spite of viscous entropy production during the fireball evolution. With this initial entropy-based centrality definition we generate several classes of ultra-central Pb+Pb collisions at LHC energies and evolve the events using viscous hydrodynamics with non-zero shear but vanishing bulk viscosity. Comparing the predicted anisotropic flow coefficients for charged hadrons with CMS data we find that both the Monte Carlo Glauber (MC-Glb) and Monte Carlo Kharzeev-Levin-Nardi (MC-KLN) models produce initial fluctuation spectra that are incompatible with the measured final anisotropic flow power spectrum, for any choice of the specific shear viscosity. In spite of this failure, we show that the hydrodynamic model can qualitatively explain, in terms of event-by-event fluctuations of the anisotropic flow coefficients and flow angles, the breaking of flow factorization for elliptic, triangular and quadrangular flow measured by the CMS experiment. For elliptic flow, this factorization breaking is large in ultra-central collisions. We conclude that the bulk of the experimentally observed flow factorization breaking effects are qualitatively explained by hydrodynamic evolution of initial-state fluctuations, but that their quantitative description requires a better understanding of the initial fluctuation spectrum.

  5. Effects of cavern depth on surface subsidence and storage loss of oil-filled caverns

    SciTech Connect (OSTI)

    Hoffman, E L

    1992-01-01T23:59:59.000Z

    Finite element analyses of oil-filled caverns were performed to investigate the effects of cavern depth on surface subsidence and storage loss, a primary performance criteria of SPR caverns. The finite element model used for this study was axisymmetric, approximating an infinite array of caverns spaced at 750 ft. The stratigraphy and cavern size were held constant while the cavern depth was varied between 1500 ft and 3000 ft in 500 ft increments. Thirty year simulations, the design life of the typical SPR cavern, were performed with boundary conditions modeling the oil pressure head applied to the cavern lining. A depth dependent temperature gradient of 0.012{degrees}F/ft was also applied to the model. The calculations were performed using ABAQUS, a general purpose of finite element analysis code. The user-defined subroutine option in ABAQUS was used to enter an elastic secondary creep model which includes temperature dependence. The calculations demonstrated that surface subsidence and storage loss rates increase with increasing depth. At lower depths the difference between the lithostatic stress and the oil pressure is greater. Thus, the effective stresses are greater, resulting in higher creep rates. Furthermore, at greater depths the cavern temperatures are higher which also produce higher creep rates. Together, these factors result in faster closure of the cavern. At the end of the 30 year simulations, a 1500 ft-deep cavern exhibited 4 percent storage loss and 4 ft of subsidence while a 3000 ft-deep cavern exhibited 33 percent storage loss and 44 ft of subsidence. The calculations also demonstrated that surface subsidence is directly related to the amount of storage loss. Deeper caverns exhibit more subsidence because the caverns exhibit more storage loss. However, for a given amount of storage loss, nearly the same magnitude of surface subsidence was exhibited, independent of cavern depth.

  6. Magnetically stimulated fluid flow patterns

    ScienceCinema (OSTI)

    Martin, Jim; Solis, Kyle

    2014-08-06T23:59:59.000Z

    Sandia National Laboratories' Jim Martin and Kyle Solis explain research on the effects of magnetic fields on fluid flows and how they stimulate vigorous flows. Fluid flow is a necessary phenomenon in everything from reactors to cooling engines in cars.

  7. Magnetically stimulated fluid flow patterns

    SciTech Connect (OSTI)

    Martin, Jim; Solis, Kyle

    2014-03-06T23:59:59.000Z

    Sandia National Laboratories' Jim Martin and Kyle Solis explain research on the effects of magnetic fields on fluid flows and how they stimulate vigorous flows. Fluid flow is a necessary phenomenon in everything from reactors to cooling engines in cars.

  8. Depth distribution of lithium in oxidized binary Al-Li alloys determined by secondary ion mass spectrometry and neutron depth profiling

    SciTech Connect (OSTI)

    Soni, K.K. (Univ. of Chicago, IL (United States)); Williams, D.B. (Lehigh Univ., Bethlehem, PA (United States)); Newbury, D.E.; Chi, P.; Downing, R.G.; Lamaza, G. (National Inst. of Standards and Technology, Gaithersburg, MD (United States))

    1993-01-01T23:59:59.000Z

    Oxidation of binary Al-Li alloys during short exposures at 530 C and long exposures at 200 C was studied with regard to the Li distribution. Secondary ion mass spectrometry (SIMS) and neutron depth profiling (NDP) were used to obtain quantitative Li depth profiles across the surface oxide layer and the underlying alloy. The underlying alloy was depleted in Li as a result of oxidation at 530 and 200 C. The SIMS and NDP results showed good mutual agreement and were used to evaluate the oxide thickness, the Li concentration at the oxide-ally interface, and the mass balance between oxide and alloy. The Li depletion profiles in the alloy were also calculated using the interdiffusion coefficients reported in the literature and compared with the measured profiles; the two profiles differed at 530 C but showed good agreement at 200 C.

  9. Permitting plan for Hanford Tanks Initiative

    SciTech Connect (OSTI)

    Bloom, J.W.

    1998-03-19T23:59:59.000Z

    This plan describes all the permitting actions that have been identified as required to implement the Hanford Tanks Initiative. It reflects changes in the scope to the Hanford Tanks Initiative since the Rev. 0 plan was issued. The cost and schedule for the permitting actions are included.

  10. Clean Energy and Bond Finance Initiative

    Broader source: Energy.gov [DOE]

    Provides information on Clean Energy and Bond Finance Initiative (CE+BFI). CE+BFI brings together public infrastructure finance agencies, clean energy public fund managers and institutional investors across the country to explore how to raise capital at scale for clean energy development through bond financing. Author: Clean Energy and Bond Finance Initiative

  11. Team Captain Kit National Team Initiative

    E-Print Network [OSTI]

    Rusu, Adrian

    Team Captain Kit National Team Initiative #12;2 Welcome HOSA! We are thrilled that HOSA is supporting the Alzheimer's Association Memory Walk through the national team initiative in 2004. HOSA! Your commitment to be a Team Captain is the first step to making Memory Walk a success. We have

  12. China Initiatives at Michigan State University

    E-Print Network [OSTI]

    China Initiatives at Michigan State University Office of China Programs The Office of International Studies and Programs at Michigan State University established the Office of China Programs in July 2005 to help implement President Lou Anna K. Simon's "China Initiative," part of the university's long

  13. UNIVERSITY OF CALIFORNIA HAITI INITIATIVE Executive Committee

    E-Print Network [OSTI]

    UNIVERSITY OF CALIFORNIA HAITI INITIATIVE Executive Committee Housed at the UCLA Program in Global'Etat d'Haiti Main Campus Planning and Reform Duration 3-4 weeks in Haiti, continual basis Funding While in Haiti: Cost of living, international transportation Background The UC Haiti Initiative (UCHI

  14. SUBCHAPTER All INITIAL STATEMENT OF REASONS

    E-Print Network [OSTI]

    , Boilers and Water Heaters, January 20, 2012 NR SOLAR AND WATER HEATING Memo to Boiler CASE Initiative "Solar Ready Homes and Solar Oriented Development", September 2011 RES SOLAR & WATER HEATING CASE Initiative "Cooling Tower Water Savings", October 2011 NR HVAC CASE

  15. Update on the Million Solar Roofs Initiative

    SciTech Connect (OSTI)

    Herig, C.

    1999-05-09T23:59:59.000Z

    The Million Solar Roofs Initiative, announced by the President in June of 1997, spans a period of twelve years and intends to increase domestic deployment of solar technologies. This paper presents an overview of the development of the initiative and significant activities to date.

  16. NANOTECHNOLOGY INITIATIVE Annual Report FY 20092010

    E-Print Network [OSTI]

    NC STATE NANOTECHNOLOGY INITIATIVE Annual Report FY 20092010 In This Report: Raleigh named top AS AN EMERGING LEADER IN THE FIELD OF NANOTECHNOLOGY." Dr. Gregory Parsons, NC State Nanotechnology Initiative was a period of tremendous growth for nanotechnology activitiesThis past year was a period of tremendous growth

  17. Radiation content of Conformally flat initial data

    E-Print Network [OSTI]

    C. O. Lousto; R. H. Price

    2004-01-11T23:59:59.000Z

    We study the radiation of energy and linear momentum emitted to infinity by the headon collision of binary black holes, starting from rest at a finite initial separation, in the extreme mass ratio limit. For these configurations we identify the radiation produced by the initially conformally flat choice of the three geometry. This identification suggests that the radiated energy and momentum of headon collisions will not be dominated by the details of the initial data for evolution of holes from initial proper separations $L_0\\geq7M$. For non-headon orbits, where the amount of radiation is orders of magnitude larger, the conformally flat initial data may provide a relative even better approximation.

  18. In-Depth Analysis of Simulation Engine Codes for Comparison with DOE s Roof Savings Calculator and Measured Data

    SciTech Connect (OSTI)

    New, Joshua Ryan [ORNL; Levinson, Ronnen [Lawrence Berkeley National Laboratory (LBNL); Huang, Yu (Joe) [White Box Technologies; Sanyal, Jibonananda [ORNL; Miller, William A [ORNL; Mellot, Joe [The Garland Company; Childs, Kenneth W [ORNL; Kriner, Scott [Green Metal Consulting, Inc.

    2014-06-01T23:59:59.000Z

    The Roof Savings Calculator (RSC) was developed through collaborations among Oak Ridge National Laboratory (ORNL), White Box Technologies, Lawrence Berkeley National Laboratory (LBNL), and the Environmental Protection Agency in the context of a California Energy Commission Public Interest Energy Research project to make cool-color roofing materials a market reality. The RSC website and a simulation engine validated against demonstration homes were developed to replace the liberal DOE Cool Roof Calculator and the conservative EPA Energy Star Roofing Calculator, which reported different roof savings estimates. A preliminary analysis arrived at a tentative explanation for why RSC results differed from previous LBNL studies and provided guidance for future analysis in the comparison of four simulation programs (doe2attic, DOE-2.1E, EnergyPlus, and MicroPas), including heat exchange between the attic surfaces (principally the roof and ceiling) and the resulting heat flows through the ceiling to the building below. The results were consolidated in an ORNL technical report, ORNL/TM-2013/501. This report is an in-depth inter-comparison of four programs with detailed measured data from an experimental facility operated by ORNL in South Carolina in which different segments of the attic had different roof and attic systems.

  19. Analysis of Transient Processes in a Radiophysical Flow System

    E-Print Network [OSTI]

    E. N. Egorov; A. A. Koronovskii; A. E. Hramov

    2006-01-31T23:59:59.000Z

    Transient processes in a third-order radiophysical flow system are studied and a map of the transient process duration versus initial conditions is constructed and analyzed. The results are compared to the arrangement of submanifolds of the stable and unstable cycles in the Poincare section of the system studied.

  20. RESEARCH ARTICLE Optical plume velocimetry: a new flow measurement technique

    E-Print Network [OSTI]

    Wilcock, William

    hydrothermal systems Timothy J. Crone ? Russell E. McDuff ? William S. D. Wilcock Received: 5 November 2007 that fluid flow rates in mid- ocean ridge hydrothermal systems may be strongly influ- enced by mechanical that are transitioning between jet-like and plume-like behavior. List of symbols A area of jet nozzle, m2 B initial

  1. Higher harmonic anisotropic flow measurements of charged particles at 2.76 TeV with the ALICE detector

    E-Print Network [OSTI]

    You Zhou; for the ALICE Collaboration

    2011-12-06T23:59:59.000Z

    We report the measurements of elliptic flow $v_{2}$, as well as higher harmonics triangular flow $v_{3}$ and quadrangular flow $v_{4}$, in $\\sqrt{s_{_{NN}}} =$ 2.76 TeV Pb--Pb collisions, measured with the ALICE detector. We show that the measured elliptic and triangular flow can be understood from the initial spatial anisotropy and its event--by--event fluctuations. The resulting fluctuations of $v_{2}$ and $v_{3}$ are also discussed.

  2. Climate VISION: Private Sector Initiatives: Automobile Manufacturers...

    Office of Scientific and Technical Information (OSTI)

    GHG Information Energy Footprints DOE developed a series of Energy Footprints to map the flow of energy supply and demand in U.S. manufacturing industries. Identifying the sources...

  3. Climate VISION: Private Sector Initiatives: Chemical Manufacturing...

    Office of Scientific and Technical Information (OSTI)

    Energy Footprints DOE developed a series of Energy Footprints to map the flow of energy supply and demand in U.S. manufacturing industries. Identifying the sources and end uses of...

  4. Engineering Centre for Experiential Learning Initiative

    E-Print Network [OSTI]

    Bone, Gary

    , etc.) MES (Representatives, Executive etc.) Stakeholder Engagement Flow Chart #12;Design Charrettes Structural Systems Structural Engineer Energy Systems Electrical & Mechanical Engineer #12;Integrated Design Process Energy Systems Architect Structural Systems Structural Engineer Layout & Look Electrical

  5. Experimental investigation of welding penetration-depth in high-purity aluminium

    SciTech Connect (OSTI)

    Tong, W. [Babcock and Wilcox, Lynchburg, VA (United States). Naval Nuclear Fuel Div.

    1996-12-31T23:59:59.000Z

    One of the most important parameters in the superconducting splice design is the welding penetration-depth because it determines the electrical resistivity across the welded joints through the high-purity aluminum stabilizers. Highly resistive welds could lead to conductor instability when the superconductor goes normal. In the present investigation, experiments were performed using gas tungsten-arc welding to identify the effects of the welding parameters on the penetration-depth. The experimental results will be applied to the optimization of the superconducting splice design. The mock-up test data and theoretical analysis have shown that the higher energy input and lower welding speed produce the deeper penetration-depth in high-purity aluminum. In order to achieve an approximately uniform penetration-depth, three methods were explored: (i) a starting-delay at the welding start point, (ii) an external cooling, and (iii) staggered overlapping weldments. The experimental results have suggested that a uniform penetration-depth can be obtained under the thermal equilibrium welding conditions.

  6. 2014 SunShot Initiative Portfolio Book: Tackling Challenges in...

    Energy Savers [EERE]

    & Publications Download the SunShot Initiative 2014 Portfolio 2014 SunShot Initiative Portfolio Book: Photovoltaics 2014 SunShot Initiative Portfolio Book: Systems Integration...

  7. INITIATION OF DEGRADATION IN POLYCRYSTALLINE SODIUM-BETA ALUMINA ELECTROLYTES

    E-Print Network [OSTI]

    De Jonghe, L.C.

    2010-01-01T23:59:59.000Z

    boundaries. XBB 804 4130 2B Degradation initiation at 300 C,the Proceedings INITIATION OF DEGRADATION IN POLYCRYSTALLINEs w a m INITIATION OF DEGRADATION IN POLYCRYSTALLINE SODIUM-

  8. Parallel flow diffusion battery

    DOE Patents [OSTI]

    Yeh, H.C.; Cheng, Y.S.

    1984-01-01T23:59:59.000Z

    A parallel flow diffusion battery for determining the mass distribution of an aerosol has a plurality of diffusion cells mounted in parallel to an aerosol stream, each diffusion cell including a stack of mesh wire screens of different density.

  9. Optical flow switching

    E-Print Network [OSTI]

    Chan, Vincent W. S.

    Present-day networks are being challenged by dramatic increases in bandwidth demand of emerging applications. We will explore a new transport, ldquooptical flow switchingrdquo, that will enable significant growth and ...

  10. Olefin Autoxidation in Flow

    E-Print Network [OSTI]

    Neuenschwander, Ulrich

    Handling hazardous multiphase reactions in flow brings not only safety advantages but also significantly improved performance, due to better mass transfer characteristics. In this paper, we present a continuous microreactor ...

  11. Initiation of the detonation in the gravitationally confined detonation model of type Ia supernovae.

    SciTech Connect (OSTI)

    Seitenzahl, I. R.; Meakin, C. A.; Lamb, D. Q.; Truran, J. W. (Physics); (Univ. of Chicago); (Max-Planck-Inst. for Astrophysics); (Univ. of Arizona)

    2009-07-20T23:59:59.000Z

    We study the initiation of the detonation in the gravitationally confined detonation (GCD) model of Type Ia supernovae (SNe Ia). In this model, ignition occurs at one or several off-center points, resulting in a burning bubble of hot ash that rises rapidly, breaks through the surface of the star, and collides at a point on the stellar surface opposite the breakout, producing a high-velocity inwardly directed flow. Initiation of the detonation occurs spontaneously in a region where the length scale of the temperature gradient extending from the flow (in which carbon burning is already occurring) into unburned fuel is commensurate to the range of critical length scales which have been derived from one-dimensional simulations that resolve the initiation of a detonation. By increasing the maximum resolution in a truncated cone that encompasses this region, beginning somewhat before initiation of the detonation occurs, we successfully simulate in situ the first gradient-initiated detonation in a whole-star simulation. The detonation emerges when a compression wave overruns a pocket of fuel situated in a Kelvin-Helmholtz cusp at the leading edge of the inwardly directed jet of burning carbon. The compression wave preconditions the temperature in the fuel in such a way that the Zel'dovich gradient mechanism can operate and a detonation ensues. We explore the dependence of the length scale of the temperature gradient on spatial resolution and discuss the implications for the robustness of this detonation mechanism. We find that the time and the location at which initiation of the detonation occurs varies with resolution. In particular, initiation of a detonation had not yet occurred in our highest resolution simulation by the time we ended the simulation because of the computational demand it required. However, it may detonate later. We suggest that the turbulent shear layer surrounding the inwardly directed jet provides the most favorable physical conditions, and therefore the most likely location, for initiation of a detonation in the GCD model.

  12. INITIATION OF THE DETONATION IN THE GRAVITATIONALLY CONFINED DETONATION MODEL OF TYPE Ia SUPERNOVAE

    SciTech Connect (OSTI)

    Seitenzahl, Ivo R. [Department of Physics, University of Chicago, Chicago, IL 60637 (United States); Meakin, Casey A.; Truran, James W. [Joint Institute for Nuclear Astrophysics, University of Chicago, Chicago, IL 60637 (United States); Lamb, Don Q. [Center for Astrophysical Thermonuclear Flashes, University of Chicago, Chicago, IL 60637 (United States)

    2009-07-20T23:59:59.000Z

    We study the initiation of the detonation in the gravitationally confined detonation (GCD) model of Type Ia supernovae (SNe Ia). In this model, ignition occurs at one or several off-center points, resulting in a burning bubble of hot ash that rises rapidly, breaks through the surface of the star, and collides at a point on the stellar surface opposite the breakout, producing a high-velocity inwardly directed flow. Initiation of the detonation occurs spontaneously in a region where the length scale of the temperature gradient extending from the flow (in which carbon burning is already occurring) into unburned fuel is commensurate to the range of critical length scales which have been derived from one-dimensional simulations that resolve the initiation of a detonation. By increasing the maximum resolution in a truncated cone that encompasses this region, beginning somewhat before initiation of the detonation occurs, we successfully simulate in situ the first gradient-initiated detonation in a whole-star simulation. The detonation emerges when a compression wave overruns a pocket of fuel situated in a Kelvin-Helmholtz cusp at the leading edge of the inwardly directed jet of burning carbon. The compression wave preconditions the temperature in the fuel in such a way that the Zel'dovich gradient mechanism can operate and a detonation ensues. We explore the dependence of the length scale of the temperature gradient on spatial resolution and discuss the implications for the robustness of this detonation mechanism. We find that the time and the location at which initiation of the detonation occurs varies with resolution. In particular, initiation of a detonation had not yet occurred in our highest resolution simulation by the time we ended the simulation because of the computational demand it required. However, it may detonate later. We suggest that the turbulent shear layer surrounding the inwardly directed jet provides the most favorable physical conditions, and therefore the most likely location, for initiation of a detonation in the GCD model.

  13. Mechanical analysis of a cross flow filter

    SciTech Connect (OSTI)

    Alvin, M.A.; Lippert, T.E.; Attaar, M.H.; McNerney, K.R.

    1992-12-01T23:59:59.000Z

    Material properties have also been generated at the Argonne National Laboratories which detail the fracture toughness, Weibull modulus, and critical flaw size for a specifically fabricated lot of P-100A alumina/mullite cross flow filters.(Singh, 1990) The critical flaw size within the P-100A matrix was estimated to be {approximately}500 {mu},m which includes both large interconnected pores, as well as potentially debonded areas along the mid-rib or gas channel seams. Critical flaws are generally considered as potential failure initiation sites within the ceramic matrix. In addition maximum filter element stress levels induced by the process system have been estimated at ANL through the use of finite element computer analyses. These efforts project that the highest stresses result within the flange region of the cross flow filter. As a result of these projections, efforts at Coors Ceramics were directed to improving the overall strength of the alumina/mullite material which is used for cross flow filter fabrication. The results of the efforts at Coors Ceramics provide a significant improvement in the hot strength of the P-100A alumina/mullite filter matrix. Westinghouse assessed the existing nondestructive evaluation (NDE) techniques in terms of identifying methods for detecting critical flaws within the cross flow filter body. To date viable, cost effective methods for detecting critical flaws within the P-100A alumina/mullite matrix, or along the mid-rib bonds or gas channel seams in the full-scale, porous ceramic cross flow filter element are not readily available. As an alternate approach, Westinghouse focused its attention on developing NDE techniques as inspection methods for evaluating the extent of bonding along the mid-rib bonds and gas channel seams which results during the various fabrication stages of the cross flow filter element.

  14. Mechanical analysis of a cross flow filter

    SciTech Connect (OSTI)

    Alvin, M.A.; Lippert, T.E.; Attaar, M.H.; McNerney, K.R.

    1992-01-01T23:59:59.000Z

    Material properties have also been generated at the Argonne National Laboratories which detail the fracture toughness, Weibull modulus, and critical flaw size for a specifically fabricated lot of P-100A alumina/mullite cross flow filters.(Singh, 1990) The critical flaw size within the P-100A matrix was estimated to be [approximately]500 [mu],m which includes both large interconnected pores, as well as potentially debonded areas along the mid-rib or gas channel seams. Critical flaws are generally considered as potential failure initiation sites within the ceramic matrix. In addition maximum filter element stress levels induced by the process system have been estimated at ANL through the use of finite element computer analyses. These efforts project that the highest stresses result within the flange region of the cross flow filter. As a result of these projections, efforts at Coors Ceramics were directed to improving the overall strength of the alumina/mullite material which is used for cross flow filter fabrication. The results of the efforts at Coors Ceramics provide a significant improvement in the hot strength of the P-100A alumina/mullite filter matrix. Westinghouse assessed the existing nondestructive evaluation (NDE) techniques in terms of identifying methods for detecting critical flaws within the cross flow filter body. To date viable, cost effective methods for detecting critical flaws within the P-100A alumina/mullite matrix, or along the mid-rib bonds or gas channel seams in the full-scale, porous ceramic cross flow filter element are not readily available. As an alternate approach, Westinghouse focused its attention on developing NDE techniques as inspection methods for evaluating the extent of bonding along the mid-rib bonds and gas channel seams which results during the various fabrication stages of the cross flow filter element.

  15. Shock Initiation of New and Aged PBX 9501 Measured with Embedded Electromagnetic Particle Velocity Gauges

    SciTech Connect (OSTI)

    L. G. Hill; R. L. Gustavsen; R. R. Alcon; S. A. Sheffield

    1999-09-01T23:59:59.000Z

    We have used an embedded electromagnetic particle velocity gauge technique to measure the shock initiation behavior in PBX 9501 explosive. Up to twelve separate particle velocity wave profile measurements have been made at different depths in a single experiment. These detail the growth from an input shock to a detonation. In addition, another gauge element called a ''shock tracker'' has been used to monitor the progress of the shock front as a function of time and position as it moves through the explosive sample. This provides data similar to that obtained in a traditional explosively driven wedge test and is used to determine the position and time that the wave attains detonation. Run distance-to-detonation vs. input pressure (Pop-plot) data and particle velocity wave profile data have been obtained on new PBX 9501 pressed to densities of 1.826, 1.830, and 1.837 g/cm{sup 3}. In addition, the same measurements were performed on aged material recovered from dismantled W76 and W78 weapons. The input pressure range covered was 3.0 to 5.2 GPa. All results to date show shock sensitivity to be a function only of the initial density and not of age. PBX 9501 shock initiates the same after 17 years in stockpile as it does on the day it is pressed. Particle velocity wave profiles show mixed heterogeneous initiation (growth in the front) and homogeneous initiation (growth behind the front).

  16. Triangular flow in heavy ion collisions in a multiphase transport model

    E-Print Network [OSTI]

    Xu, Jun; Ko, Che Ming.

    2011-01-01T23:59:59.000Z

    (RHIC) have provided important information on the properties of produced quark-gluon plasma (QGP) [1?4]. In particular, the large elliptic flow observed in experiments has led to the conclusion that the produced quark-gluon plasma is strongly...,10]. With the large parton scattering cross section, the transport model is also able to describe the hexadecupole flow measured at RHIC [11]. More recently, the importance of the triangular flow, which originates from fluctuations in the initial collision...

  17. Conjugate flow action functionals

    SciTech Connect (OSTI)

    Venturi, Daniele, E-mail: daniele-venturi@brown.edu [Division of Applied Mathematics, Brown University, Rhode Island 02912 (United States)] [Division of Applied Mathematics, Brown University, Rhode Island 02912 (United States)

    2013-11-15T23:59:59.000Z

    We present a new general framework to construct an action functional for a non-potential field theory. The key idea relies on representing the governing equations relative to a diffeomorphic flow of curvilinear coordinates which is assumed to be functionally dependent on the solution field. Such flow, which will be called the conjugate flow, evolves in space and time similarly to a physical fluid flow of classical mechanics and it can be selected in order to symmetrize the Gteaux derivative of the field equations with respect to suitable local bilinear forms. This is equivalent to requiring that the governing equations of the field theory can be derived from a principle of stationary action on a Lie group manifold. By using a general operator framework, we obtain the determining equations of such manifold and the corresponding conjugate flow action functional. In particular, we study scalar and vector field theories governed by second-order nonlinear partial differential equations. The identification of transformation groups leaving the conjugate flow action functional invariant could lead to the discovery of new conservation laws in fluid dynamics and other disciplines.

  18. Quantification of depth of anesthesia by nonlinear time series analysis of brain electrical activity

    E-Print Network [OSTI]

    G. Widman; T. Schreiber; B. Rehberg; A. Hoeft; C. E. Elger

    2000-07-20T23:59:59.000Z

    We investigate several quantifiers of the electroencephalogram (EEG) signal with respect to their ability to indicate depth of anesthesia. For 17 patients anesthetized with Sevoflurane, three established measures (two spectral and one based on the bispectrum), as well as a phase space based nonlinear correlation index were computed from consecutive EEG epochs. In absence of an independent way to determine anesthesia depth, the standard was derived from measured blood plasma concentrations of the anesthetic via a pharmacokinetic/pharmacodynamic model for the estimated effective brain concentration of Sevoflurane. In most patients, the highest correlation is observed for the nonlinear correlation index D*. In contrast to spectral measures, D* is found to decrease monotonically with increasing (estimated) depth of anesthesia, even when a "burst-suppression" pattern occurs in the EEG. The findings show the potential for applications of concepts derived from the theory of nonlinear dynamics, even if little can be assumed about the process under investigation.

  19. Investigation of Celotex trademark charring depths in the DT-18 shipping container

    SciTech Connect (OSTI)

    Anderson, J.C.

    1992-03-01T23:59:59.000Z

    Celotex {trademark}, the insulating material used between the outer and inner containers of the DT-18 shipping package, undergoes decomposition, combustion, or both when heated to temperatures exceeding 150{degrees}C. Several DT-18 packages that had previously undergone hypothetical thermal accident testing were opened and Celotex {trademark} charring depths ranging from {1/2} to 1 {1/2} in. were recorded. The majority of char depth data taken was between 3/4 and 1 {1/4} in. One-dimensional HEATING 7.1 models of the DT-18 package were developed. HEATING predicts charring depths of 1 to 1 1/8 in., which are in good agreement with measured values. Both experimental and analytical data indicate that charring is fairly uniform over the DT-18 package. 7 refs.

  20. Investigation of Celotex{trademark} charring depths in the DT-18 shipping container

    SciTech Connect (OSTI)

    Anderson, J.C.

    1992-03-01T23:59:59.000Z

    Celotex {trademark}, the insulating material used between the outer and inner containers of the DT-18 shipping package, undergoes decomposition, combustion, or both when heated to temperatures exceeding 150{degrees}C. Several DT-18 packages that had previously undergone hypothetical thermal accident testing were opened and Celotex {trademark} charring depths ranging from {1/2} to 1 {1/2} in. were recorded. The majority of char depth data taken was between 3/4 and 1 {1/4} in. One-dimensional HEATING 7.1 models of the DT-18 package were developed. HEATING predicts charring depths of 1 to 1 1/8 in., which are in good agreement with measured values. Both experimental and analytical data indicate that charring is fairly uniform over the DT-18 package. 7 refs.

  1. Section 13: Flow control 1 Section 13: Flow control

    E-Print Network [OSTI]

    Kohlenbach, Ulrich

    Geometries for Energyefficient Flow Around Bodies Abstract 14:30 14:50: Elfriede Friedmann (Universitt

  2. Energy Flow Energy Flow Energy Flow A.Ukleja, T.Tymieniecka, I.Skillicorn 1 Azimuthal asymmetry

    E-Print Network [OSTI]

    Energy Flow Energy Flow Energy Flow A.Ukleja, T.Tymieniecka, I.Skillicorn 1 Azimuthal asymmetry using energy flow method Azimuthal angle distribution at Q2 >100 GeV2 Energy flow method.Ukleja on behalf of the ZEUS Collaboration #12; Energy Flow Energy Flow Energy Flow A.Ukleja, T.Tymieniecka, I

  3. Depth Profiling Of Small Molecule Ingress Into Planar and Cylindrical Materials Using NRA and PIXE

    SciTech Connect (OSTI)

    Smith, Richard W.; Massingham, Gary; Clough, Anthony S. [Department of Physics, University of Surrey, Guildford, Surrey, GU2 7XH (United Kingdom)

    2003-08-26T23:59:59.000Z

    The use of a 3He ion micro-beam technique to study the ingress/diffusion of water into a planar fibre optic grade glass and a cylindrical drug-release polymer is described. One-dimensional concentration profiles showing the depth of water ingress were produced. The depth of penetration of water into the glass was measured by fitting a gaussian function to the concentration profile. The ingress of water into the drug-release polymer was found to be Fickian and a cylindrical diffusion model used to obtain a diffusion coefficient.

  4. Soil temperature, soil moisture and thaw depth, Barrow, Alaska, Ver. 1

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Sloan, V.L.; J.A. Liebig; M.S. Hahn; J.B. Curtis; J.D. Brooks; A. Rogers; C.M. Iversen; R.J. Norby

    This dataset consists of field measurements of soil properties made during 2012 and 2013 in areas A-D of Intensive Site 1 at the Next-Generation Ecosystem Experiments (NGEE) Arctic site near Barrow, Alaska. Included are i) weekly measurements of thaw depth, soil moisture, presence and depth of standing water, and soil temperature made during the 2012 and 2013 growing seasons (June - September) and ii) half-hourly measurements of soil temperature logged continuously during the period June 2012 to September 2013.

  5. Depth Profile of Uncompensated Spins in an Exchange-Bias System

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville Power Administration wouldDECOMPOSITIONPortalToDepth Profile of Uncompensated Spins in anDepth

  6. United Nations Human Space Technology Initiative (HSTI)

    E-Print Network [OSTI]

    Ochiai, M; Steffens, H; Balogh, W; Haubold, H J; Othman, M; Doi, T

    2015-01-01T23:59:59.000Z

    The Human Space Technology Initiative was launched in 2010 within the framework of the United Nations Programme on Space Applications implemented by the Office for Outer Space Affairs of the United Nations. It aims to involve more countries in activities related to human spaceflight and space exploration and to increase the benefits from the outcome of such activities through international cooperation, to make space exploration a truly international effort. The role of the Initiative in these efforts is to provide a platform to exchange information, foster collaboration between partners from spacefaring and non-spacefaring countries, and encourage emerging and developing countries to take part in space research and benefit from space applications. The Initiative organizes expert meetings and workshops annually to raise awareness of the current status of space exploration activities as well as of the benefits of utilizing human space technology and its applications. The Initiative is also carrying out primary ...

  7. Integrated Initiative Teams and Working Groups

    E-Print Network [OSTI]

    Initiative Team Mark McFarland, chair Juan Anciso Todd Bilby Diane Boellstorff Gary Bryant Anthony Camerino Todd Bilby Diane Boellstorff Elizabeth Brown John Carey Alex Castillo Rudy Dunlap Gary Ellis Morgan

  8. Augmenting Probabilistic Risk Assesment with Malevolent Initiators

    SciTech Connect (OSTI)

    Curtis Smith; David Schwieder

    2011-11-01T23:59:59.000Z

    As commonly practiced, the use of probabilistic risk assessment (PRA) in nuclear power plants only considers accident initiators such as natural hazards, equipment failures, and human error. Malevolent initiators are ignored in PRA, but are considered the domain of physical security, which uses vulnerability assessment based on an officially specified threat (design basis threat). This paper explores the implications of augmenting and extending existing PRA models by considering new and modified scenarios resulting from malevolent initiators. Teaming the augmented PRA models with conventional vulnerability assessments can cost-effectively enhance security of a nuclear power plant. This methodology is useful for operating plants, as well as in the design of new plants. For the methodology, we have proposed an approach that builds on and extends the practice of PRA for nuclear power plants for security-related issues. Rather than only considering 'random' failures, we demonstrated a framework that is able to represent and model malevolent initiating events and associated plant impacts.

  9. OUT Success Stories: The Superconductivity Partnership Initiative

    SciTech Connect (OSTI)

    Reeca, L.; Platt, C.

    2000-08-05T23:59:59.000Z

    The U.S. Department of Energy's (DOE's) Superconductivity Partnership Initiative (SPI) stands at the forefront of worldwide efforts to advance research and development of superconducting power equipment for energy transmission, distribution, and industrial use.

  10. Technology Venture Development Community Partnerships Strategic Initiatives

    E-Print Network [OSTI]

    Technology Venture Development Community Partnerships Strategic Initiatives Faculty Outreach) 587-3836 Technology Commercialization Office (TCO) Intellectual Property Protection Technology and Start the Commercialization Process www.TeCh venTUreS.UTAh.eDU Technology commercialization starts

  11. Webinar December 2: Materials Genome Initiative

    Broader source: Energy.gov [DOE]

    The Energy Department will present a live webinar entitled "Materials Genome Initiative" on Tuesday, December 2, from 12:00 to 1:00 p.m. Eastern Standard Time.

  12. Commonwealth Wind Incentive Program Micro Wind Initiative

    Broader source: Energy.gov [DOE]

    Through the Commonwealth Wind Incentive Program Micro Wind Initiative the Massachusetts Clean Energy Center (MassCEC) offers rebates of up to $4/W with a maximum of $130,000 for design and...

  13. Hawaii Clean Energy Initiative Scenario Analysis

    Office of Energy Efficiency and Renewable Energy (EERE)

    Analysis of potential policy options to help the state reach the 70% Hawaii Clean Energy Initiative (HCEI) goal, including possible pathways to attain the goal based on currently available technology.

  14. State Small Business Credit Initiative (Minnesota)

    Broader source: Energy.gov [DOE]

    The State Small Business Credit Initiative (SSBCI) uses federal funding to stimulate private-sector lending and improve access to capital for small businesses and manufacturers that are credit...

  15. DuPont Energy Breakout Initiative

    E-Print Network [OSTI]

    Bailey, W. F.

    2007-01-01T23:59:59.000Z

    In February 2005, DuPont launched the Energy Breakout initiative to accelerate improvement in energy efficiency and reduce energy costs in its US operations. This comprehensive program, led by the Senior Vice President of Operations, resulted...

  16. Flagship Cluster Hiring Initiative Computational Science

    E-Print Network [OSTI]

    Allen, Gabrielle

    Flagship Cluster Hiring Initiative Computational Science: Advancing Research, Society and the Economy Gabrielle Allen (PI) Thomas Sterling (Presenter/co-PI) Department of Computer Science Center for Computation & Technology #12;Computational Science: Advancing Research, Society and the Economy, External

  17. Alaska Village Initiatives Rural Business Conference

    Broader source: Energy.gov [DOE]

    Hosted by the Alaska Village Initiative, the 24th Annual Rural Small Business Conference brings together rural businesses and leaders to provide them with networking opportunities, training, and technical information.

  18. Advanced Drop-In Biofuels Initiative Agenda

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Roundtable - USDADOEDONDOT-FAA Advanced Drop-In Biofuels Initiative Agenda May 18, 2012 8:00 a.m. - 5:00 p.m. Jefferson Auditorium U.S. Department of Agriculture South Building...

  19. Initial Report on a LISP Programmer's Apprentice

    E-Print Network [OSTI]

    Rich, Charles

    1976-12-01T23:59:59.000Z

    This is an initial report on the design and partial implementation of a LISP programmers apprentice, an interactive programming system to be used by an expert programmer in the design, coding, and maintenance of large, ...

  20. King County- Green Building Initiative (Washington)

    Broader source: Energy.gov [DOE]

    The King County Green Building Initiative started in 2001, and was included in the King Code Code with the Green Building and Sustainable Development Ordinance in 2008. The ordinance requires that...

  1. Postdoctoral Research Associate (Walton Initiatives) Tempe Campus

    E-Print Network [OSTI]

    Hall, Sharon J.

    ; sustainable development; urban sustainability; energy, materials, and technology; food and food and Melani Walton Sustainability Solutions Initiatives, a program of the Global Institute of Sustainability (GIOS) at Arizona State University, invites applications for several postdoctoral scholars

  2. Network support for system initiated checkpoints

    SciTech Connect (OSTI)

    Chen, Dong; Heidelberger, Philip

    2013-01-29T23:59:59.000Z

    A system, method and computer program product for supporting system initiated checkpoints in parallel computing systems. The system and method generates selective control signals to perform checkpointing of system related data in presence of messaging activity associated with a user application running at the node. The checkpointing is initiated by the system such that checkpoint data of a plurality of network nodes may be obtained even in the presence of user applications running on highly parallel computers that include ongoing user messaging activity.

  3. AlAA 96-4505 RESULTS FROM INITIAL OPERATION OF A CONTINUOUS-FLOW,

    E-Print Network [OSTI]

    Texas at Arlington, University of

    Development Center. Descriptions of the arc heater, nozzle, test section, diffuser and vacuum tank; together, diffuser and vacuum tank; and the supporting DC power supply, cooling water system, pneumatic system employs a 2.0 MW, vortex-stabilized DC electric arc heater obtained from the Air Force Arnold Engineering

  4. PHYSICAL REVIEW E 84, 056319 (2011) Influence of initial mean helicity on homogeneous turbulent shear flow

    E-Print Network [OSTI]

    ?cole Normale Supérieure

    of central importance in the context of magnetically confined thermonuclear fusion plasma [1]. Historically

  5. ICFT- An Initial Closed-Loop Flow Test of the Fenton Hill Phase II HDR

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand Jump to: navigation, search OpenEIHesperia, California:ProjectProgramsAlterationAl.,GRCReservoir |

  6. Sandia Energy - Molten Nitrate Salt Initial Flow Testing is a Tremendous

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What's PossibleRadiationImplementing Nonlinear757Kelley Ruehl Home

  7. Surface and Interface Control on Photochemically Initiated Immobilizat...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Interface Control on Photochemically Initiated Immobilization . Surface and Interface Control on Photochemically Initiated Immobilization . Abstract: Surface and interface...

  8. Modified Knudsen ansatz and elliptic flow in $\\sqrt{s}$=14 TeV pp collisions

    E-Print Network [OSTI]

    Chaudhuri, A K

    2011-01-01T23:59:59.000Z

    Assuming that hot spots are formed in initial pp collisions, in a modified Knudsen ansatz, which accounts for the entropy generation in viscous fluid evolution, we have given predictions for elliptic flow in $\\sqrt{s}$=14 TeV pp collisions. Predicted flow depends on the number of hot spots and hot spot sizes. If two to four hot spots of size $\\approx$0.1 fm are formed in initial pp collisions, in events with multiplicity $n_ {mult}\\approx$10-15, modified Knudsen ansatz predicted flow is accessible experimentally in 4th order cumulant method.

  9. Modified Knudsen ansatz and elliptic flow in $\\sqrt{s}$=14 TeV pp collisions

    E-Print Network [OSTI]

    A. K. Chaudhuri

    2011-05-16T23:59:59.000Z

    Assuming that hot spots are formed in initial pp collisions, in a modified Knudsen ansatz, which accounts for the entropy generation in viscous fluid evolution, we have given predictions for elliptic flow in $\\sqrt{s}$=14 TeV pp collisions. Predicted flow depends on the number of hot spots and hot spot sizes. If two to four hot spots of size $\\approx$0.1 fm are formed in initial pp collisions, in events with multiplicity $n_ {mult}\\approx$10-15, modified Knudsen ansatz predicted flow is accessible experimentally in 4th order cumulant method.

  10. Study of flow fields induced by surface dielectric barrier discharge actuator in low-pressure air

    SciTech Connect (OSTI)

    Che, Xueke, E-mail: chedk@163.com, E-mail: st@mail.iee.ac.cn; Nie, Wansheng; Tian, Xihui; Hou, Zhiyong; He, Haobo; Zhou, Penghui; Zhou, Siyin; Yang, Chao [Equipment Academy, Beijing 101416 (China)] [Equipment Academy, Beijing 101416 (China); Shao, Tao, E-mail: chedk@163.com, E-mail: st@mail.iee.ac.cn [Institute of Electrical Engineering, Chinese Academy of Sciences, Beijing 100190 (China)] [Institute of Electrical Engineering, Chinese Academy of Sciences, Beijing 100190 (China)

    2014-04-15T23:59:59.000Z

    Surface dielectric barrier discharge (SDBD) is a promising method for a flow control. Flow fields induced by a SDBD actuator driven by the ac voltage in static air at low pressures varying from 1.0 to 27.7?kPa are measured by the particle image velocimetry method. The influence of the applied ac voltage frequency and magnitude on the induced flow fields is studied. The results show that three different classes of flow fields (wall jet flow field, complex flow field, and vortex-shape flow field) can be induced by the SDBD actuator in the low-pressure air. Among them, the wall jet flow field is the same as the tangential jet at atmospheric pressure, which is, together with the vertical jet, the complex flow field. The vortex-shape flow field is composed of one vertical jet which points towards the wall and two opposite tangential jets. The complex and the vortex-shape flow fields can be transformed to the wall jet flow field when the applied ac voltage frequency and magnitude are changed. It is found that the discharge power consumption increases initially, decreases, and then increases again at the same applied ac voltage magnitude when the air pressure decreases. The tangential velocity of the wall jet flow field increases when the air pressure decreases. It is however opposite for the complex flow field. The variation of the applied ac voltage frequency influences differently three different flow fields. When the applied ac voltage magnitude increases at the same applied ac voltage frequency, the maximal jet velocity increases, while the power efficiency increases only initially and then decreases again. The discharge power shows either linear or exponential dependences on the applied ac voltage magnitude.

  11. Piezoelectric axial flow microvalve

    SciTech Connect (OSTI)

    Gemmen, Randall; Thornton, Jimmy; Vipperman, Jeffrey S.; Clark, William W.

    2007-01-09T23:59:59.000Z

    This invention is directed to a fuel cell operable with a quantity of fuel and a quantity of an oxidizer to produce electrical power, the fuel cell including a fuel cell body including a labyrinth system structured to permit the fuel and the oxidizer to flow therethrough; at least a first catalyst in fluid communication with the labyrinth; and at least a first microvalve operably disposed within at least a portion of the labyrinth. The microvalve utilizes a deflectable member operable upon the application of a voltage from a voltage source. The microvalve includes an elongated flow channel formed therein and extending substantially longitudinally between the first and second ends to permit substantially longitudinal flow of the fluid therethrough and between the first and second ends; and the deflectable member disposed on the valve body, the deflectable member including at least a first piezoelectric portion that is piezoelectrically operable to deflect the deflectable member between an open position and a closed position upon the application of a voltage, the deflectable member in the closed position being operable to resist the flow of the fluid through the flow channel.

  12. Photothermoacoustic imaging of biological tissues: maximum depth characterization comparison of time and

    E-Print Network [OSTI]

    Mandelis, Andreas

    Photothermoacoustic imaging of biological tissues: maximum depth characterization comparison for Advanced Diffusion-Wave Technologies Department of Mechanical and Industrial Engineering 5 King's College induced in light-absorbing materials can be observed either as a transient signal in time domain

  13. Integrating Kinect Depth Data with a Stochastic Object Classification Framework for Forestry Robots

    E-Print Network [OSTI]

    Hellström, Thomas

    Integrating Kinect Depth Data with a Stochastic Object Classification Framework for Forestry Robots camera for a stochastic classification system for forestry robots. The images are classified as bush- ject classification system that uses only RGB camera. The system is aimed for a forestry robot

  14. Secure Computation of Constant-Depth Circuits with Applications to Database Search Problems

    E-Print Network [OSTI]

    Shpilka, Amir

    Secure Computation of Constant-Depth Circuits with Applications to Database Search Problems Omer. Motivated by database search problems such as partial match or nearest neighbor, we present secure between k poly log(s) parties who all know C, we obtain a secure protocol for evaluating C(x) using O

  15. Secure Computation of Constant-Depth Circuits with Applications to Database Search Problems ?

    E-Print Network [OSTI]

    Ishai, Yuval

    Secure Computation of Constant-Depth Circuits with Applications to Database Search Problems ? Omer. Motivated by database search problems such as partial match or nearest neighbor, we present secure distributed between k #21; poly log(s) parties who all know C, we obtain a secure protocol for evaluating C

  16. An in-depth Analysis of Space Heating Energy Use in Office Buildings

    E-Print Network [OSTI]

    LBNL-5732E An in-depth Analysis of Space Heating Energy Use in Office Buildings Author(s), Hung Energy, Building Technologies Program, of the U.S. Department of Energy under Contract No. DE-AC02-05CH than 7 trillion Joules of site energy annually [USDOE]. Analyzing building space heating performance

  17. Probabilistic models and reliability analysis of scour depth around bridge piers

    E-Print Network [OSTI]

    Bolduc, Laura Christine

    2009-06-02T23:59:59.000Z

    parameters suggest that the maximum sour depth predicted by the deterministic HEC-18 Sand and HEC-18 Clay models tend to be conservative. Evidence is also found that the applicability of the HEC-18 Clay method is not limited to clay but can also be used...

  18. Energy-Based 6-DOF Penetration Depth Computation for Penalty-Based Haptic Rendering Algorithms

    E-Print Network [OSTI]

    Zefran, Milo?

    Energy-Based 6-DOF Penetration Depth Computation for Penalty-Based Haptic Rendering Algorithms Maxim Kolesnikov and Milos Zefran Abstract-- Existing penalty-based haptic rendering ap- proaches of rigid-body motions SE(3). We propose a penalty-based six-degrees-of-freedom (6-DOF) haptic rendering

  19. Unravelling the influence of water depth and wave energy on the facies diversity of shelf carbonates

    E-Print Network [OSTI]

    Purkis, Sam

    Unravelling the influence of water depth and wave energy on the facies diversity of shelf their production is tied to light and wave energy, carbonate sediments are most effectively produced in shallow energy regime to be reliable indicators of facies type when considered in isolation. Consid- ered

  20. Submission (November 1, 2001) to 'Journal of Systems and Software' A Controlled Experiment on Inheritance Depth

    E-Print Network [OSTI]

    Prechelt, Lutz

    effort that is much more powerful than a model relying on inheritance depth. Keywords: controlled of the key elements that makes object-oriented programming powerful[Meyer, 1997]. Many design problems canSubmission (November 1, 2001) to 'Journal of Systems and Software' A Controlled Experiment

  1. Submission (November 1, 2001) to 'Journal of Systems and Software' A Controlled Experiment on Inheritance Depth

    E-Print Network [OSTI]

    Prechelt, Lutz

    effort that is much more powerful than a model relying on inheritance depth. Keywords: controlledSubmission (November 1, 2001) to 'Journal of Systems and Software' A Controlled Experiment was significantly easier to maintain than the 0level program. We describe the design and setup of our experiment

  2. The depth of the tropical Pacific Ocean's warm surface layer shrank during the last three

    E-Print Network [OSTI]

    Yanik, Mehmet Fatih

    The depth of the tropical Pacific Ocean's warm surface layer shrank during the last three decades Pacific Ocean, off an island in Palau. They analysed the ratio of nitrogen and carbon isotopes.1029/2010GL044867 (2010) OceanOgraphy Cold water rising in the Pacific DrUg DeVeLOpMenT Worm surgery on a chip

  3. Anytime AND/OR Depth-first Search for Combinatorial Optimization

    E-Print Network [OSTI]

    Dechter, Rina

    ] [ ] Decomposition Cache table for F (independent of A) Time and Space: O( nk w ) Prune based on current best with current child subproblems. 1. Move breadth-first to next open subproblem P . 2. Process P depth-first, until either: P is solved optimally, P decomposes into child subproblems, a predefined threshold

  4. Distinct compositional thin layers at mid-mantle depths beneath northeast China revealed by the USArray

    E-Print Network [OSTI]

    Niu, Fenglin

    Natural Gas Institute, China University of Petroleum, Beijing, China b Department of Earth Science, RiceDistinct compositional thin layers at mid-mantle depths beneath northeast China revealed crust northeast China USArray a b s t r a c t We observe a clear seismic arrival at $35­45 s after

  5. Distinct compositional thin layers at mid-mantle depths beneath northeast China revealed by the USArray

    E-Print Network [OSTI]

    Niu, Fenglin

    Natural Gas Institute, China University of Petroleum, Beijing, China b Department of Earth Science, RiceDistinct compositional thin layers at mid-mantle depths beneath northeast China revealed February 2013 Keywords: S to P converted wave mid-mantle reflectors subducted oceanic crust northeast China

  6. {sup 152}Eu depths profiles granite and concrete cores exposed to the Hiroshima atomic bomb

    SciTech Connect (OSTI)

    Shizuma, Kiyoshi; Iwatani, Kazuo [Hiroshima Univ. (Japan); Oka, Takamitsu [Kure Univ. (Japan)] [and others

    1997-06-01T23:59:59.000Z

    Two granite and two concrete core samples were obtained within 500 m from the hypocenter of the Hiroshima atomic bomb, and the depth profile of {sup 152}Eu was measured to evaluate the incident neutron spectrum. The granite cores were obtained from a pillar of the Motoyasu Bridge located 101 m from the hypocenter and from a granite rock in the Shirakami Shrine (379 m); the concrete cores were obtained from a gate in the Gokoku Shrine (398 m) and from top of the Hiroshima bank (250 m). The profiles of the specific activities of the cores were measured to a depth of 40 cm from the surface using low background germanium (Ge) spectrometers. According to the measured depth profiles, relaxation lengths of incident neutrons were derived as 13.6 cm for Motoyasu Bridge pillar (granite), 12.2 cm for Shirakami Shrine core (granite), and 9.6 cm for concrete cores of Gokoku Shrine and Hiroshima Bank. In addition, a comparison of the granite cores in Hiroshima showed good agreement with Nagasaki data. Present results indicates that the depth profile of {sup 152}Eu reflects incident neutrons not so high but in the epithermal region. 19 refs., 7 figs., 8 tabs.

  7. Long prereproductive selection and divergence by depth in a Caribbean candelabrum coral

    E-Print Network [OSTI]

    Hellberg, Michael E.

    Long prereproductive selection and divergence by depth in a Caribbean candelabrum coral Carlos of the candelabrum coral Eunicea flexuosa across the Caribbean. Eunicea is endemic to the Caribbean and all sister: How can new marine species emerge without obvious geographic isolation? Caribbean coral reefs

  8. Laser infrared photothermal radiometric depth profilometry of steels and its potential in rail track evaluation

    E-Print Network [OSTI]

    Mandelis, Andreas

    -scattering or in the transmission mode using a variety of sensor probes. In this work we used the infrared (IR) photothermal radioLaser infrared photothermal radiometric depth profilometry of steels and its potential in rail track evaluation A. Mandelis*, M. Munidasa, L. Nicolaides Photothermal and Optoelectronic Diagnostics

  9. The role of nutricline depth in regulating the ocean carbon cycle

    E-Print Network [OSTI]

    The role of nutricline depth in regulating the ocean carbon cycle Pedro Cermen~ oa , Stephanie, 77 Massachusetts Avenue, Massachusetts Institute of Technology, Cambridge, MA 02139-4307; c play key roles in the regulation of atmospheric pCO2 and the maintenance of upper trophic levels (1

  10. Possible overestimation of shallow-depth calcium carbonate dissolution in the ocean

    E-Print Network [OSTI]

    Follows, Mick

    Possible overestimation of shallow-depth calcium carbonate dissolution in the ocean K. Friis,1,2 R calcium carbonate (TA*) above the saturation horizon cannot be unambiguously interpreted in terms of local and biogeochemistry with explicit representation of the formation and dissolution of calcium carbonate. In particular

  11. Journal of Superconductivity, Vol. 5, No. 4, 1992 Magnetic Penetration Depth Measurements in

    E-Print Network [OSTI]

    Anlage, Steven

    of superconductivity is the diamagnetic response of a superconductor below its transition temperature To. The abilityJournal of Superconductivity, Vol. 5, No. 4, 1992 Magnetic Penetration Depth Measurements in Cuprate Superconductors Steven M. AnlageI and Dong-Ho Wut Received 16 April 1992 We examine recent results

  12. IEA BESTEST Multi-Zone Non-Airflow In-Depth Diagnostic Cases: Preprint

    SciTech Connect (OSTI)

    Neymark, J.; Judkoff, R.; Alexander, D.; Felsmann, C.; Strachan, P.; Wijsman, A.

    2011-11-01T23:59:59.000Z

    This paper documents a set of in-depth diagnostic test cases for multi-zone heat transfer models that do not include the heat and mass transfer effects of airflow between zones. The multi-zone non-airflow test cases represent an extension to IEA BESTEST (Judkoff and Neymark 1995a).

  13. Numerical Simulation of Impact Rollers for Estimating the Influence Depth of Soil Compaction

    E-Print Network [OSTI]

    Kim, Kukjoo

    2011-10-21T23:59:59.000Z

    will estimate more precisely the depth of influence for impact rollers. To do so, the general purpose finite element computer program LS-DYNA is used for numerical predictions. The finite element study is carried out with three-dimensional models. A simplified...

  14. CHARACTERISATION OF AGED HDPE PIPES FROM DRINKING WATER DISTRIBUTION: INVESTIGATION OF CRACK DEPTH BY NOL RING

    E-Print Network [OSTI]

    Paris-Sud XI, Universit de

    BY NOL RING TESTS UNDER CREEP LOADING C. Devilliers 1), 2), 3) , L. Laiarinandrasana 1) , B. Fayolle 2. KEYWORDS HDPE pipes, Nol Ring creep test, ageing effects, fracture mechanism, crack depth ratio, aged layer loading than a monotonic tensile loading. It is to be noticed that the Nol Ring test subjected to a creep

  15. Maximum Neutral Buoyancy Depth of Juvenile Chinook Salmon: Implications for Survival during Hydroturbine Passage

    SciTech Connect (OSTI)

    Pflugrath, Brett D.; Brown, Richard S.; Carlson, Thomas J.

    2012-03-01T23:59:59.000Z

    This study investigated the maximum depth at which juvenile Chinook salmon Oncorhynchus tshawytscha can acclimate by attaining neutral buoyancy. Depth of neutral buoyancy is dependent upon the volume of gas within the swim bladder, which greatly influences the occurrence of injuries to fish passing through hydroturbines. We used two methods to obtain maximum swim bladder volumes that were transformed into depth estimations - the increased excess mass test (IEMT) and the swim bladder rupture test (SBRT). In the IEMT, weights were surgically added to the fishes exterior, requiring the fish to increase swim bladder volume in order to remain neutrally buoyant. SBRT entailed removing and artificially increasing swim bladder volume through decompression. From these tests, we estimate the maximum acclimation depth for juvenile Chinook salmon is a median of 6.7m (range = 4.6-11.6 m). These findings have important implications to survival estimates, studies using tags, hydropower operations, and survival of juvenile salmon that pass through large Kaplan turbines typical of those found within the Columbia and Snake River hydropower system.

  16. A New Theory for the Atmospheric Energy Spectrum: Depth-Limited Temperature Anomalies at the Tropopause

    E-Print Network [OSTI]

    Smith, K. Shafer

    A New Theory for the Atmospheric Energy Spectrum: Depth-Limited Temperature Anomalies Sciences, New York University, 251 Mercer Street, New York, NY 10012 Communicated by Andrew J. Majda, June- bations generated at the planetary scale excite a direct cas- cade of energy with a slope of -3 at large

  17. Probing the Depths of CSP-M: A new fdr-compliant Validation Tool

    E-Print Network [OSTI]

    Southampton, University of

    Probing the Depths of CSP-M: A new fdr-compliant Validation Tool Michael Leuschel and Marc Fontaine,fontaine}@cs.uni-duesseldorf.de Abstract. We present a new animation and model checking tool for CSP. The tool covers the CSP-M language in the source code, has an LTL model checker and can be used for combined CSP B specifications. During

  18. London penetration depth and coherence length of SU(3) vacuum flux tubes

    E-Print Network [OSTI]

    Paolo Cea; Leonardo Cosmai; Francesca Cuteri; Alessandro Papa

    2014-10-16T23:59:59.000Z

    The transverse profile of the chromoelectric field generated by a quark-antiquark pair in the SU(3) vacuum is analysed within the dual superconductor scenario, then the London penetration depth and coherence length are extracted. The color field is determined on the lattice through a connected correlator of two Polyakov loops measured on smeared configurations.

  19. The effect of ocean mixed layer depth on climate in slab ocean aquaplanet experiments

    E-Print Network [OSTI]

    Battisti, David

    a severely reduced (&50 %) meridi- onal energy transport relative to the deep ocean runs. As a resultThe effect of ocean mixed layer depth on climate in slab ocean aquaplanet experiments Aaron Donohoe online: 28 June 2013 ? Springer-Verlag Berlin Heidelberg 2013 Abstract The effect of ocean mixed layer

  20. Solid precipitation on a tropical glacier in Bolivia measured with an ultrasonic depth gauge

    E-Print Network [OSTI]

    Berthier, Etienne

    Solid precipitation on a tropical glacier in Bolivia measured with an ultrasonic depth gauge Jeanveloppement, La Paz, Bolivia Received 24 April 2002; revised 6 June 2002; accepted 6 June 2002; published 10 the equilibrium line of the Zongo glacier (2.4 km2 ), Bolivia (16S). Study of the influence of wind, air

  1. Wetting and free surface flow modeling for potting and encapsulation.

    SciTech Connect (OSTI)

    Brooks, Carlton, F.; Brooks, Michael J. (Los Alamos National Laboratory, Los Alamos, NM); Graham, Alan Lyman (Los Alamos National Laboratory, Los Alamos, NM); Noble, David F. (David Frederick) (.; )); Notz, Patrick K.; Hopkins, Matthew Morgan; Castaneda, Jaime N.; Mahoney, Leo James (Kansas City Plant, Kansas City, MO); Baer, Thomas A.; Berchtold, Kathryn (Los Alamos National Laboratory, Los Alamos, NM); Adolf, Douglas Brian; Wilkes, Edward Dean; Rao, Rekha Ranjana; Givler, Richard C.; Sun, Amy Cha-Tien; Cote, Raymond O.; Mondy, Lisa Ann; Grillet, Anne Mary; Kraynik, Andrew Michael

    2007-06-01T23:59:59.000Z

    As part of an effort to reduce costs and improve quality control in encapsulation and potting processes the Technology Initiative Project ''Defect Free Manufacturing and Assembly'' has completed a computational modeling study of flows representative of those seen in these processes. Flow solutions are obtained using a coupled, finite-element-based, numerical method based on the GOMA/ARIA suite of Sandia flow solvers. The evolution of the free surface is solved with an advanced level set algorithm. This approach incorporates novel methods for representing surface tension and wetting forces that affect the evolution of the free surface. In addition, two commercially available codes, ProCAST and MOLDFLOW, are also used on geometries representing encapsulation processes at the Kansas City Plant. Visual observations of the flow in several geometries are recorded in the laboratory and compared to the models. Wetting properties for the materials in these experiments are measured using a unique flowthrough goniometer.

  2. Gaseous Flows in Galaxies

    E-Print Network [OSTI]

    F. Combes

    2007-09-02T23:59:59.000Z

    The gas component plays a major role in the dynamics of spiral galaxies, because of its dissipative character, and its ability to exchange angular momentum with stars in the disk. Due to its small velocity dispersion, it triggers gravitational instabilities, and the corresponding non-axisymmetric patterns produce gravity torques, which mediate these angular momentum exchanges. When a srong bar pattern develops with the same pattern speed all over the disk, only gas inside corotation can flow towards the center. But strong bars are not long lived in presence of gas, and multiple-speed spiral patterns can develop between bar phases, and help the galaxy to accrete external gas flowing from cosmic filaments. The gas is then intermittently driven to the galaxy center, to form nuclear starbursts and fuel an active nucleus. The various time-scales of these gaseous flows are described.

  3. Three-dimensional Simulation of Magnetized Cloud Fragmentation Induced by Nonlinear Flows and Ambipolar Diffusion

    E-Print Network [OSTI]

    Takahiro Kudoh; Shantanu Basu

    2008-04-27T23:59:59.000Z

    We demonstrate that the formation of collapsing cores in subcritical clouds is accelerated by nonlinear flows, by performing three-dimensional non-ideal MHD simulations. An initial random supersonic (and trans-Alfvenic) turbulent-like flow is input into a self-gravitating gas layer that is threaded by a uniform magnetic field (perpendicular to the layer) such that the initial mass-to-flux ratio is subcritical. Magnetic ambipolar diffusion occurs very rapidly initially due to the sharp gradients introduced by the turbulent flow. It subsequently occurs more slowly in the traditional near-quasistatic manner, but in regions of greater mean density than present in the initial state. The overall timescale for runaway growth of the first core(s) is several times, 10^6 yr, even though previous studies have found a timescale of several times, 10^7 yr when starting with linear perturbations and similar physical parameters. Large-scale supersonic flows exist in the cloud and provide an observationally testable distinguishing characteristic from core formation due to linear initial perturbations. However, the nonlinear flows have decayed sufficiently that the relative infall motions onto the first core are subsonic, as in the case of starting from linear initial perturbations. The ion infall motions are very similar to those of neutrals; however, they lag the neutral infall in directions perpendicular to the mean magnetic field direction and lead the neutral infall in the direction parallel to the mean magnetic field.

  4. Behavior of a particle-laden flow in a spiral channel Sungyon Lee, Yvonne Stokes, and Andrea L. Bertozzi

    E-Print Network [OSTI]

    Stokes, Yvonne

    field. Using work on gravity-driven monodisperse slurries on an incline that empirically accounts for this coupling, we consider a monodisperse particle slurry of small depth flowing down a rectangular channel particle separators, used primarily by the mineral and coal processing industries,1,2 in this paper we

  5. Development and verification of a numerical simulator to calculate the bottom hole flowing pressures in multiphase systems

    E-Print Network [OSTI]

    Rasool, Syed Ahmed

    1994-01-01T23:59:59.000Z

    the Middle East, but there were some wells located in offshore Louisiana. There was a wide range Of variation in the variables for each well, some of these were: flow rates, gas/oil ratios, total depths, tubing sizes, fluid Compositions, and water cuts...

  6. Coupled modeling of groundwater flow solute transport, chemical reactions and microbial processes in the 'SP' island

    SciTech Connect (OSTI)

    Samper, Javier; Molinero, Jorg; Changbing, Yang; Zhang, Guoxiang

    2003-12-01T23:59:59.000Z

    The Redox Zone Experiment was carried out at the Aespoe HRL in order to study the redox behavior and the hydrochemistry of an isolated vertical fracture zone disturbed by the excavation of an access tunnel. Overall results and interpretation of the Redox Zone Project were reported by /Banwart et al, 1995/. Later, /Banwart et al, 1999/ presented a summary of the hydrochemistry of the Redox Zone Experiment. Coupled groundwater flow and reactive transport models of this experiment were carried out by /Molinero, 2000/ who proposed a revised conceptual model for the hydrogeology of the Redox Zone Experiment which could explain simultaneously measured drawdown and salinity data. The numerical model was found useful to understand the natural system. Several conclusions were drawn about the redox conditions of recharge waters, cation exchange capacity of the fracture zone and the role of mineral phases such as pyrite, calcite, hematite and goethite. This model could reproduce the measured trends of dissolved species, except for bicarbonate and sulfate which are affected by microbially-mediated processes. In order to explore the role of microbial processes, a coupled numerical model has been constructed which accounts for water flow, reactive transport and microbial processes. The results of this model is presented in this report. This model accounts for groundwater flow and reactive transport in a manner similar to that of /Molinero, 2000/ and extends the preliminary microbial model of /Zhang, 2001/ by accounting for microbially-driven organic matter fermentation and organic matter oxidation. This updated microbial model considers simultaneously the fermentation of particulate organic matter by yeast and the oxidation of dissolved organic matter, a product of fermentation. Dissolved organic matter is produced by yeast and serves also as a substrate for iron-reducing bacteria. Model results reproduce the observed increase in bicarbonate and sulfate concentration, thus adding additional evidence for the possibility of organic matter oxidation as the main source of bicarbonate. Model results indicate that pH and Eh are relatively stable. The dissolution-precipitation trends of hematite, pyrite and calcite also coincide with those indicated by the conceptual model. A thorough sensitivity analysis has been performed for the most relevant microbial parameters as well as for initial and boundary POC and DOC concentrations. The results of such analysis indicate that computed concentrations of bicarbonate, sulfate and DOC are sensitive to most of the microbial parameters, including specific growth rates, half-saturation constants, proportionality coefficients and yield coefficients. Model results, however, are less sensitive to the yield coefficient of DOC to iron-reducer bacteria. The sensitivity analysis indicates that changes in fermentation microbial parameters affect the growth of the iron-reducer, thus confirming the interconnection of both microbial processes. Computed concentrations of bicarbonate and sulfate are found to be sensitive to changes in the initial concentration of POC and the boundary concentration of DOC, but they lack sensitivity to the initial concentration of DOC and the boundary concentration of POC. The explanation for such result is related to the fact that POC has a low mobility due to its large molecular weight. DOC, however, can migrate downwards. Although a coupled hydro-bio-geochemical 1-D model can reproduce the observed ''unexpected'' increase of concentrations of bicarbonate and sulfate at a depth of 70 m, further modeling work is required in order to obtain a similar conclusion under the more realistic two dimensional conditions of the fracture zone.

  7. Multiphase cooling flows

    E-Print Network [OSTI]

    Peter A. Thomas

    1996-08-20T23:59:59.000Z

    I discuss the multiphase nature of the intracluster medium whose neglect can lead to overestimates of the baryon fraction of clusters by up to a factor of two. The multiphase form of the cooling flow equations are derived and reduced to a simple form for a wide class of self-similar density distributions. It is shown that steady-state cooling flows are \\emph{not} consistent with all possible emissivity profiles which can therefore be used as a test of the theory. In combination, they provide strong constraints on the mass distribution within the cooling radius.

  8. Gyrotactic trapping in laminar and turbulent Kolmogorov flow

    E-Print Network [OSTI]

    Francesco Santamaria; Filippo De Lillo; Massimo Cencini; Guido Boffetta

    2014-10-07T23:59:59.000Z

    Phytoplankton patchiness, namely the heterogeneous distribution of microalgae over multiple spatial scales, dramatically impacts marine ecology. A spectacular example of such heterogeneity occurs in thin phytoplankton layers (TPLs), where large numbers of photosynthetic microorganisms are found within a small depth interval. Some species of motile phytoplankton can form TPLs by gyrotactic trapping due to the interplay of their particular swimming style (directed motion biased against gravity) and the transport by a flow with shear along the direction of gravity. Here we consider gyrotactic swimmers in numerical simulations of the Kolmogorov shear flow, both in laminar and turbulent regimes. In the laminar case, we show that the swimmer motion is integrable and the formation of TPLs can be fully characterized by means of dynamical systems tools. We then study the effects of rotational Brownian motion or turbulent fluctuations (appearing when the Reynolds number is large enough) on TPLs. In both cases we show that TPLs become transient, and we characterize their persistence.

  9. Simulations of ductile flow in brittle material processing

    SciTech Connect (OSTI)

    Luh, M.H.; Strenkowski, J.S.

    1988-12-01T23:59:59.000Z

    Research is continuing on the effects of thermal properties of the cutting tool and workpiece on the overall temperature distribution. Using an Eulerian finite element model, diamond and steel tools cutting aluminum have been simulated at various, speeds, and depths of cut. The relative magnitude of the thermal conductivity of the tool and the workpiece is believed to be a primary factor in the resulting temperature distribution in the workpiece. This effect is demonstrated in the change of maximum surface temperatures for diamond on aluminum vs. steel on aluminum. As a preliminary step toward the study of ductile flow in brittle materials, the relative thermal conductivities of diamond on polycarbonate is simulated. In this case, the maximum temperature shifts from the rake face of the tool to the surface of the machined workpiece, thus promoting ductile flow in the workpiece surface.

  10. Transients from Zel'dovich initial conditions

    E-Print Network [OSTI]

    P. Valageas

    2002-12-19T23:59:59.000Z

    We investigate the error implied by the use of the Zel'dovich approximation to set up the initial conditions at a finite redshift zi in numerical simulations. Using a steepest-descent method developed in a previous work we derive the probability distribution P(delta_R) of the density contrast in the quasi-linear regime. This also provides its dependence on the redshift zi at which the simulation is started. Thus, we find that the discrepancy with the exact pdf (defined by the limit zi->infinity) is negligible after the scale factor has grown by a factor a/a_i>5, for scales which were initially within the linear regime with sigma_i>0.1. This shows that the use of the Zel'dovich approximation to implement the initial conditions is sufficient for practical purposes since these are not very severe constraints.

  11. Flow cytometry apparatus

    DOE Patents [OSTI]

    Pinkel, Daniel (Walnut Creek, CA)

    1991-01-01T23:59:59.000Z

    An obstruction across the flow chamber creates a one dimensional convergence of a sheath fluid. A passageway in the construction directs flat cells near to the area of one dimensional convergence in the sheath fluid to provide proper orientation of flat cells at fast rates.

  12. AGN and Cooling Flows

    E-Print Network [OSTI]

    James Binney

    2001-03-23T23:59:59.000Z

    For two decades the steady-state cooling-flow model has dominated the literature of cluster and elliptical-galaxy X-ray sources. For ten years this model has been in severe difficulty from a theoretical point of view, and it is now coming under increasing pressure observationally. For two decades the steady-state cooling-flow model has dominated the literature of cluster and elliptical-galaxy X-ray sources. For ten years this model has been in severe difficulty from a theoretical point of view, and it is now coming under increasing pressure observationally. A small number of enthusiasts have argued for a radically different interpretation of the data, but had little impact on prevailing opinion because the unsteady heating picture that they advocate is extremely hard to work out in detail. Here I explain why it is difficult to extract robust observational predictions from the heating picture. Major problems include the variability of the sources, the different ways in which a bi-polar flow can impact on X-ray emission, the weakness of synchrotron emission from sub-relativistic flows, and the sensitivity of synchrotron emission to a magnetic field that is probably highly localized.

  13. Integrated Renewable Energy and Campus Sustainability Initiative

    SciTech Connect (OSTI)

    Uthoff, Jay; Jensen, Jon; Bailey, Andrew

    2013-09-25T23:59:59.000Z

    Renewable energy, energy conservation, and other sustainability initiatives have long been a central focus of Luther College. The DOE funded Integrated Renewable Energy and Campus Sustainability Initiative project has helped accelerate the Colleges progress toward carbon neutrality. DOE funds, in conjunction with institutional matching funds, were used to fund energy conservation projects, a renewable energy project, and an energy and waste education program aimed at all campus constituents. The energy and waste education program provides Luther students with ideas about sustainability and conservation guidelines that they carry with them into their future communities.

  14. Modular initiator with integrated optical diagnostic

    DOE Patents [OSTI]

    Alam, M. Kathleen (Cedar Crest, NM); Schmitt, Randal L. (Tijeras, NM); Welle, Eric J. (Niceville, FL); Madden, Sean P. (Arlington, MA)

    2011-05-17T23:59:59.000Z

    A slapper detonator which integrally incorporates an optical wavequide structure for determining whether there has been degradation of the explosive in the explosive device that is to be initiated by the detonator. Embodiments of this invention take advantage of the barrel-like character of a typical slapper detonator design. The barrel assembly, being in direct contact with the energetic material, incorporates an optical diagnostic device into the barrel assembly whereby one can monitor the state of the explosive material. Such monitoring can be beneficial because the chemical degradation of the explosive plays an important in achieving proper functioning of a detonator/initiator device.

  15. Initial deuterium pellet experiments on FTU

    SciTech Connect (OSTI)

    Snipes, J.A.

    1993-01-01T23:59:59.000Z

    Initial experiments have been performed with the Single Pellet INjector (SPIN) on FTU. SPIN is a two-stage cryogenic deuterium pellet injector capable of injection,a pellets with velocities up to 2.5 km/s. The nominal pellet mass for these experiments was approximately 1 [times] 10[sup 20] atoms. These initial pellet experiments concentrated on studying pellet penetration under a variety of plasma conditions to compare with code predictions and to examine toroidal particle transport. The principal diagnostics used were two fast ([approximately]1 [mu]sec) photomultiplier tubes at nearly opposite toroidal locations with H[sub [alpha

  16. Poiseuille flow of soft glasses in narrow channels: From quiescence to steady state

    E-Print Network [OSTI]

    Pinaki Chaudhuri; Jrgen Horbach

    2014-10-26T23:59:59.000Z

    Using numerical simulations, the onset of Poiseuille flow in a confined soft glass is investigated. Starting from the quiescent state, steady flow sets in at a time scale which increases with a decrease in applied forcing. At this onset time scale, a rapid transition occurs via the simultaneous fluidization of regions having different local stresses. In the absence of steady flow at long times, creep is observed even in regions where the local stress is larger than the bulk yielding threshold. Finally, we show that the time scale to attain steady flow depends strongly on the history of the initial state.

  17. Initial Scaling Studies and Conceptual Thermal Fluids Experiments for the Prismatic NGNP Point Design

    SciTech Connect (OSTI)

    D. M. McEligot; G. E. McCreery

    2004-09-01T23:59:59.000Z

    The objective of this report is to document the initial high temperature gas reactor scaling studies and conceptual experiment design for gas flow and heat transfer. The general approach of the project is to develop new benchmark experiments for assessment in parallel with CFD and coupled CFD/ATHENA/RELAP5-3D calculations for the same geometry. Two aspects of the complex flow in an NGNP are being addressed: (1) flow and thermal mixing in the lower plenum ("hot streaking" issue) and (2) turbulence and resulting temperature distributions in reactor cooling channels ("hot channel" issue). Current prismatic NGNP concepts are being examined to identify their proposed flow conditions and geometries over the range from normal operation to decay heat removal in a pressurized cooldown. Approximate analyses are being applied to determine key non-dimensional parameters and their magnitudes over this operating range. For normal operation, the flow in the coolant channels can be considered to be dominant forced convection with slight transverse property variation. The flow in the lower plenum can locally be considered to be a situation of multiple buoyant jets into a confined density-stratified crossflow -- with obstructions. Experiments are needed for the combined features of the lower plenum flows. Missing from the typical jet experiments are interactions with nearby circular posts and with vertical posts in the vicinity of vertical walls - with near stagnant surroundings at one extreme and significant crossflow at the other. Two heat transfer experiments are being considered. One addresses the "hot channel" problem, if necessary. The second experiment will treat heated jets entering a model plenum. Unheated MIR (Matched-Index-of-Refraction) experiments are first steps when the geometry is complicated. One does not want to use a computational technique which will not even handle constant properties properly. The MIR experiment will simulate flow features of the paths of jets as they mix in flowing through the array of posts in a lower plenum en route to the single exit duct. Initial conceptual designs for such experiments are described.

  18. The effect of virtual mass on the characteristics and the numerical stability in two-phase flow

    E-Print Network [OSTI]

    No, H. C.

    1981-01-01T23:59:59.000Z

    It is known that the typical six equation two-fluid model of the two-phase flow possesses complex characteristics, exhibits unbounded instabilities in the short-wavelength limit and constitutes an ill-posed initial value ...

  19. Brownfield to Brightfield Initiative in Oak Ridge, TN - 12346

    SciTech Connect (OSTI)

    Hough, Gil; Fairless, Chad [Restoration Services, Inc. (RSI), Oak Ridge, Tennessee (United States)

    2012-07-01T23:59:59.000Z

    Experience characterizing, permitting, and restoring 'Brownfield' sites-government or industrial sites with restricted future use due to the presence or potential presence of hazardous substances, pollutants, or contaminants-is being leveraged to identify opportunities for redevelopment into solar power generating facilities which, in this context, are called 'Brightfields'. Brownfield sites offer the expansive land necessary for large photovoltaic (PV) solar farms, but require an in-depth working knowledge of complicated regulatory restrictions and environmental constraints to develop them. As a part of the effort to identify opportunities for redevelopment of Brownfield sites for solar applications, a technical guide, was composed specifically for the development of solar generation on restricted use sites. The basis of the technical guide gives specific consideration to environmental requirements and installation methods breaking that into three areas for assessing: 1) levels of contamination, 2) ground penetration requirements, and 3) the requirements for aesthetics and maintenance. Brightfield projects are underway to support the technical guide and expand re-industrialization efforts for the former DOE Gaseous Diffusion Plant in Oak Ridge, TN. There are exciting opportunities to turn Brownfields into Brightfield solar energy solutions for meeting the future renewable energy needs of our country. Brownfields that offer the large surface area required for solar PV farms coupled with the technical guide for the installation of solar farms on restricted use sites supports efforts to develop the solar capacities and expertise to tap this future market. The initial projects designed following the technical guide will provide verification of the installation requirements and beneficial reuse of restricted use sites. (authors)

  20. Radial Inflow Gas Turbine Flow Path Design

    E-Print Network [OSTI]

    Samip Shah; Gaurang Chaudhri; Digvijay Kulshreshtha; S. A. Channiwalla

    Abstract:- A new method for radial inflow gas turbine flow paths design based on a unique integrated conceptual design environment AxSTREAM is presented in this paper. This integrated environment is a seamless and swift processing scheme that incorporates stages aerodynamic analysis and preliminary design/sizing based on the one dimensional method. The environment makes possible to find number of different designs with inverse task solver, basing on initially specified boundary conditions, closing conditions and design variables. Design space explorer provides easy and visual comparison for range of obtained design in customizable coordinate axes. Solution filtering on different parameters, such as meridional and axial dimensions, maximal blades weight, saving the time to choose from thousands obtained solutions the only one right design. Flexibility of presented approach allows to built-up complete gas turbine flow path from consequence of individual elements: stationary and rotating elements, ducts, heat exchangers, and analyze it in common environment. Complete control of all aspects of aerodynamic flow path quality, structural reliability, and integral performances on design and offdesign conditions is performing throughout all design process. This gives full interaction between user and system for immediate correction and enhancement of current design data using various optimization capabilities to feel the impact of changes on each design step. Integrated system AxSTREAM significantly shortening the design cycle time from initial machine concept to finalized design with all offdesign performances details. The design process is demonstrated for a 25kW radial inflow gas turbine. Keywords:- Radial Inflow Turbine, Performance Maps, AxSTREAM I.

  1. Coupling free flow / porous-medium flow General idea

    E-Print Network [OSTI]

    Cirpka, Olaf Arie

    equation t (v) + div (vv ) - div(v) + p - g - qv = 0 Darcy flow equation t (S) - div K (p - g) - qpmT transport equation t (X) + div (vX - DsteamX) = qsteam 16/14 #12;Backup additional Darcy flow equations-Stokes 1 phase, 2 components, temperature sharp interface porous-medium / Darcy flow 2 phases, 2 component

  2. Energy Transition Initiative: Islands Playbook (Book)

    SciTech Connect (OSTI)

    Not Available

    2015-01-01T23:59:59.000Z

    The Island Energy Playbook (the Playbook) provides an action-oriented guide to successfully initiating, planning, and completing a transition to an energy system that primarily relies on local resources to eliminate a dependence on one or two imported fuels. It is intended to serve as a readily available framework that any community can adapt to organize its own energy transition effort.

  3. Geoffrey R Weller Library Digital Initiatives Librarian

    E-Print Network [OSTI]

    Northern British Columbia, University of

    Geoffrey R Weller Library Digital Initiatives Librarian (Two Year Term Position) The Geoffrey R information technology as well as to manage, maintain, and develop the library's digital infrastructure in Libraryand Information Studies. Experience with the delivery of digital library services is required

  4. FUTURE POWER GRID INITIATIVE GridOPTICSTM

    E-Print Network [OSTI]

    of individual software products November 2012 PNNL-SA-90162 Ian Gorton Pacific Northwest National Laboratory (509) 375-3850 ian.gorton@pnnl.gov ABOUT FPGI The Future Power Grid Initiative (FPGI) will deliver next National Laboratory's (PNNL) national electric grid research facility, the FPGI will advance the science

  5. Bioheat and Mass Transfer Educational Initiatives for

    E-Print Network [OSTI]

    Texas at Austin, University of

    fluid and molecular transport Cornell Datta Ugrad heat and mass fundamentals Datta fluid mechBioheat and Mass Transfer Educational Initiatives for ASME K-17 Committee Ken Diller University of Texas #12;Outline of Presentation Summary of submitted bioheat and mass transfer syllabi from K-17

  6. METROPOLITAN TRANSPORTATION SUPPORT INITIATIVE (METSI) QUARTERLY REPORT

    E-Print Network [OSTI]

    Illinois at Chicago, University of

    METROPOLITAN TRANSPORTATION SUPPORT INITIATIVE (METSI) QUARTERLY REPORT for the quarter ending over 50%) of residents throughout the state of Illinois would support a 5 cent per gallon gas tax if the proceeds were to improve roads and transit. The other survey, 2002 Market Survey undertaken by RTA examined

  7. Sustainability Initiative Task Force Final Report

    E-Print Network [OSTI]

    Sheridan, Jennifer

    UWMadison Sustainability Initiative Task Force Final Report October 2010 #12;We are pleased to present the final report of the campus Sustainability Task Force. This report fulfills the charge we gave to sustainability for consideration by UWMadison's leadership and campus community. There are many reasons why

  8. Autonomous Following RObot Initial Design Review

    E-Print Network [OSTI]

    Liebling, Michael

    lines. Applications: Redrawing existing sports fields, e.g. basketball, tennis, football, soccer Repainting fading street lines Perimeter security #12;Initial Design Review: Project Description (III) Base proof of concept goals: Following a line with high precision and accuracy. Using a set of rules

  9. Technology Venture Development Community Partnerships Strategic Initiatives

    E-Print Network [OSTI]

    Technology Venture Development Community Partnerships Strategic Initiatives Faculty Outreach) 587-3836 Technology Commercialization Office (TCO) Intellectual Property Protection Technology) 585-3844 INTRODUCTION www.TeCh venTUreS.UTAh.eDUwww.TeCh venTUreS.UTAh.eDU Technology

  10. Initial Ideals in the Exterior Dominic Searles

    E-Print Network [OSTI]

    Slinko, Arkadii

    , and initial ideals in the exterior algebra over a vector space of dimension n. We review properties of term in the exterior algebra over a vector space of dimension n 6, and we give some illustrative examples. i #12;ii in the exterior algebra over a vector space of dimension n. For the purposes of this thesis, we will denote

  11. ERISII Initial Design Document I . Design Goals

    E-Print Network [OSTI]

    Wiederhold, Gio

    ERISII Initial Design Document I . Design Goals The goals behind the ERISII system are to present the directions of I*3 technology in general. In the first half of this document, we will examine the particular thee primary prototype will be used by environmental restoration managers, while being flexible enough

  12. Chemical Spill Response Procedure Initial Response

    E-Print Network [OSTI]

    Chemical Spill Response Procedure Initial Response 1. Advise lab occupants of the spill-4500. If not, continue with step 4. Clean-Up 4. Ensure the spill area has adequate ventilation to clear gases is absorbed. If necessary, add more neutralizing powder. 9. If cleaning up a solvent, proceed to step 13. 10

  13. Surface hardening of titanium alloys with melting depth controlled by heat sink

    DOE Patents [OSTI]

    Oden, Laurance L. (Albany, OR); Turner, Paul C. (Albany, OR)

    1995-01-01T23:59:59.000Z

    A process for forming a hard surface coating on titanium alloys includes providing a piece of material containing titanium having at least a portion of one surface to be hardened. The piece having a portion of a surface to be hardened is contacted on the backside by a suitable heat sink such that the melting depth of said surface to be hardened may be controlled. A hardening material is then deposited as a slurry. Alternate methods of deposition include flame, arc, or plasma spraying, electrodeposition, vapor deposition, or any other deposition method known by those skilled in the art. The surface to be hardened is then selectively melted to the desired depth, dependent on the desired coating thickness, such that a molten pool is formed of the piece surface and the deposited hardening material. Upon cooling a hardened surface is formed.

  14. California Solar InitiativeCalifornia Solar Initiative Julie FitchJulie Fitch

    E-Print Network [OSTI]

    California Solar InitiativeCalifornia Solar Initiative Julie FitchJulie Fitch Director, Division, 2005December 12, 2005 #12;12/12/0512/12/05 22 Existing Solar ProgramsExisting Solar Programs Non 2001year since 2001 50 MW solar50 MW solar capacity installed;capacity installed; 62 MW in progress

  15. Shape and flow fluctuations in ultra-central Pb+Pb collisions at the LHC

    E-Print Network [OSTI]

    Shen, Chun; Heinz, Ulrich

    2015-01-01T23:59:59.000Z

    In ultra-central heavy-ion collisions, anisotropic hydrodynamic flow is generated by density fluctuations in the initial state rather than by geometric overlap effects. For a given centrality class, the initial fluctuation spectrum is sensitive to the method chosen for binning the events into centrality classes. We show that sorting events by total initial entropy or by total final multiplicity yields event classes with equivalent statistical fluctuation properties, in spite of viscous entropy production during the fireball evolution. With this initial entropy-based centrality definition we generate several classes of ultra-central Pb+Pb collisions at LHC energies and evolve the events using viscous hydrodynamics with non-zero shear but vanishing bulk viscosity. Comparing the predicted anisotropic flow coefficients for charged hadrons with CMS data we find that both the Monte Carlo Glauber (MC-Glb) and Monte Carlo Kharzeev-Levin-Nardi (MC-KLN) models produce initial fluctuation spectra that are incompatible w...

  16. Message Flow Modulator Final Report

    E-Print Network [OSTI]

    Boyer, Robert Stephen

    operational environment at the Patuxent River Naval Air Test Center with scenarios developed by an independent in testing and demonstrating the flow modulator at the Patuxent River Naval Air Test Center. #12;MESSAGE FLOW

  17. Radial flow pulse jet mixer

    DOE Patents [OSTI]

    VanOsdol, John G.

    2013-06-25T23:59:59.000Z

    The disclosure provides a pulse jet mixing vessel for mixing a plurality of solid particles. The pulse jet mixing vessel is comprised of a sludge basin, a flow surface surrounding the sludge basin, and a downcoming flow annulus between the flow surface and an inner shroud. The pulse jet mixing vessel is additionally comprised of an upper vessel pressurization volume in fluid communication with the downcoming flow annulus, and an inner shroud surge volume separated from the downcoming flow annulus by the inner shroud. When the solid particles are resting on the sludge basin and a fluid such as water is atop the particles and extending into the downcoming flow annulus and the inner shroud surge volume, mixing occurs by pressurization of the upper vessel pressurization volume, generating an inward radial flow over the flow surface and an upwash jet at the center of the sludge basin.

  18. Flow (2008) Director: Irena Salina

    E-Print Network [OSTI]

    Hemmers, Oliver

    2008-01-01T23:59:59.000Z

    Flow (2008) Director: Irena Salina Run Time: 93 min. Summary: ,Irena Salina's documentary film://documentaryfilms.suite101.com/article.cfm/desperate_for_water_irena_salinas_movie_flow No Dumb Questions (2001) Director

  19. Biofuel Production Initiative at Claflin University Final Report

    SciTech Connect (OSTI)

    Chowdhury, Kamal

    2011-07-20T23:59:59.000Z

    For US transportation fuel independence or reduced dependence on foreign oil, the Federal Government has mandated that the country produce 36 billion gallons (bg) of renewable transportation fuel per year for its transportation fuel supply by 2022. This can be achieved only if development of efficient technology for second generation biofuel from ligno-cellulosic sources is feasible. To be successful in this area, development of a widely available, renewable, cost-effective ligno-cellulosic biomass feedstock that can be easily and efficiently converted biochemically by bacteria or other fast-growing organisms is required. Moreover, if the biofuel type is butanol, then the existing infrastructure to deliver fuel to the customer can be used without additional costs and retrofits. The Claflin Biofuel Initiative project is focused on helping the US meet the above-mentioned targets. With support from this grant, Claflin University (CU) scientists have created over 50 new strains of microorganisms that are producing butanol from complex carbohydrates and cellulosic compounds. Laboratory analysis shows that a number of these strains are producing higher percentages of butanol than other methods currently in use. All of these recombinant bacterial strains are producing relatively high concentrations of acetone and numerous other byproducts as well. Therefore, we are carrying out intense mutations in the selected strains to reduce undesirable byproducts and increase the desired butanol production to further maximize the yield of butanol. We are testing the proof of concept of producing pre-industrial large scale biobutanol production by utilizing modifications of currently commercially available fermentation technology and instrumentation. We have already developed an initial process flow diagram (PFD) and selected a site for a biobutanol pilot scale facility in Orangeburg, SC. With the recent success in engineering new strains of various biofuel producing bacteria at CU, it will soon be possible to provide other technical information for the development of process flow diagrams (PFDs) and piping and instrumentation diagrams (P&IDs). This information can be used for the equipment layout and general arrangement drawings for the proposed process and eventual plant. An efficient bio-butanol pilot plant to convert ligno-cellulosic biomass feedstock from bagasse and wood chips will create significant number of green jobs for the Orangeburg, SC community that will be environmentally-friendly and generate much-needed income for farmers in the area.

  20. Brain Tissue Depth (mm) LightPowerDensity(mW/mm2

    E-Print Network [OSTI]

    Schnitzer, Mark

    Brain Tissue Depth (mm) LightPowerDensity(mW/mm2 ) Power Meter Tissue block Bare Fiber = 12 = 6 with the beveled cannula over CeA. d) Chart indicating estimated light power density seen at various distances from the fiber tip in mouse brain tissue when the light power density seen at the fiber tip was 7 mW (~99 mW/mm2

  1. {sup 14}C depth profiles in Apollo 15 and 17 cores and lunar rock 68815

    SciTech Connect (OSTI)

    Jull, A.J.T.; Cloudt, S.; Donahue, D.J. [Univ. of Arizona, Tucson, AZ (United States). NSF Arizona AMS Facility] [Univ. of Arizona, Tucson, AZ (United States). NSF Arizona AMS Facility; Sisterson, J.M. [Harvard Univ., Cambridge, MA (United States). Harvard Cyclotron Lab.] [Harvard Univ., Cambridge, MA (United States). Harvard Cyclotron Lab.; Reedy, R.C. [Los Alamos National Lab., NM (United States)] [Los Alamos National Lab., NM (United States); Masarik, J. [Comenius Univ., Bratislava (Slovakia). Dept. of Nuclear Physics] [Comenius Univ., Bratislava (Slovakia). Dept. of Nuclear Physics

    1998-09-01T23:59:59.000Z

    Accelerator mass spectrometry (AMS) was used to measure the activity vs. depth profiles of {sup 14}C produced by both solar cosmic rays (SCR) and galactic cosmic rays (GCR) in Apollo 15 lunar cores 15001-6 and 15008, Apollo 17 core 76001, and lunar rock 68815. Calculated GCR production rates are in good agreement with {sup 14}C measurements at depths below {approximately}10 cm. Carbon-14 produced by solar protons was observed in the top few cm of the Apollo 15 cores and lunar rock 68815, with near-surface values as high as 66 dpm/kg in 68815. Only low levels of SCR-produced {sup 14}C were observed in the Apollo 17 core 76001. New cross sections for production of {sup 14}C by proton spallation on O, Si, Al, Mg, Fe, and Ni were measured using AMS. These cross sections are essential for the analysis of the measured {sup 14}C depth profiles. The best fit to the activity-depth profiles for solar-proton-produced {sup 14}C measured in the tops of both the Apollo 15 cores and 68815 was obtained for an exponential rigidity spectral shape R{sub 0} of 110--115 MV and a 4 {pi} flux (J{sub 10}, Ep > 10 MeV) of 103--108 protons/cm{sup 2}/s. These values of R{sub 0} are higher, indicating a harder rigidity, and the solar-proton fluxes are higher than those determined from {sup 10}Be, {sup 26}Al, and {sup 53}Mn measurements.

  2. Annual Report: Carbon Capture Simulation Initiative (CCSI) (30 September 2013)

    SciTech Connect (OSTI)

    Miller, David C; Syamlal, Madhava; Cottrell, Roger; Kress, Joel D; Sundaresan, S; Sun, Xin; Storlie, C; Bhattacharyya, D; Tong, Charles; Zitney, Stephen E; Dale, Crystal; Engel, Dave; Agarwal, Deb; Calafiura, Paolo; Shinn, John

    2014-03-05T23:59:59.000Z

    The Carbon Capture Simulation Initiative (CCSI) is a partnership among national laboratories, industry and academic institutions that is developing and deploying state-of-the-art computational modeling and simulation tools to accelerate the commercialization of carbon capture technologies from discovery to development, demonstration, and ultimately the widespread deployment to hundreds of power plants. The CCSI Toolset will provide end users in industry with a comprehensive, integrated suite of scientifically validated models, with uncertainty quantification (UQ), optimization, risk analysis and decision making capabilities. The CCSI Toolset incorporates commercial and open-source software currently in use by industry and is also developing new software tools as necessary to fill technology gaps identified during execution of the project. Ultimately, the CCSI Toolset will (1) enable promising concepts to be more quickly identified through rapid computational screening of devices and processes; (2) reduce the time to design and troubleshoot new devices and processes; (3) quantify the technical risk in taking technology from laboratory-scale to commercial-scale; and (4) stabilize deployment costs more quickly by replacing some of the physical operational tests with virtual power plant simulations. CCSI is led by the National Energy Technology Laboratory (NETL) and leverages the Department of Energy (DOE) national laboratories core strengths in modeling and simulation, bringing together the best capabilities at NETL, Los Alamos National Laboratory (LANL), Lawrence Berkeley National Laboratory (LBNL), Lawrence Livermore National Laboratory (LLNL), and Pacific Northwest National Laboratory (PNNL). The CCSIs industrial partners provide representation from the power generation industry, equipment manufacturers, technology providers and engineering and construction firms. The CCSIs academic participants (Carnegie Mellon University, Princeton University, West Virginia University, Boston University and the University of Texas at Austin) bring unparalleled expertise in multiphase flow reactors, combustion, process synthesis and optimization, planning and scheduling, and process control techniques for energy processes. During Fiscal Year (FY) 13, CCSI announced the initial release of its first set of computational tools and models during the October 2012 meeting of its Industry Advisory Board. This initial release led to five companies licensing the CCSI Toolset under a Test and Evaluation Agreement this year. By the end of FY13, the CCSI Technical Team had completed development of an updated suite of computational tools and models. The list below summarizes the new and enhanced toolset components that were released following comprehensive testing during October 2013. 1. FOQUS. Framework for Optimization and Quantification of Uncertainty and Sensitivity. Package includes: FOQUS Graphic User Interface (GUI), simulation-based optimization engine, Turbine Client, and heat integration capabilities. There is also an updated simulation interface and new configuration GUI for connecting Aspen Plus or Aspen Custom Modeler (ACM) simulations to FOQUS and the Turbine Science Gateway. 2. A new MFIX-based Computational Fluid Dynamics (CFD) model to predict particle attrition. 3. A new dynamic reduced model (RM) builder, which generates computationally efficient RMs of the behavior of a dynamic system. 4. A completely re-written version of the algebraic surrogate model builder for optimization (ALAMO). The new version is several orders of magnitude faster than the initial release and eliminates the MATLAB dependency. 5. A new suite of high resolution filtered models for the hydrodynamics associated with horizontal cylindrical objects in a flow path. 6. The new Turbine Science Gateway (Cluster), which supports FOQUS for running multiple simulations for optimization or UQ using a local computer or cluster. 7. A new statistical tool (BSS-ANOVA-UQ) for calibration and validation of CFD models. 8. A new basic data submodel in Aspen Plus forma

  3. A methodology for analyzing precursors to earthquake-initiated and fire-initiated accident sequences

    SciTech Connect (OSTI)

    Budnitz, R.J.; Lambert, H.E.; Apostolakis, G. [and others] and others

    1998-04-01T23:59:59.000Z

    This report covers work to develop a methodology for analyzing precursors to both earthquake-initiated and fire-initiated accidents at commercial nuclear power plants. Currently, the U.S. Nuclear Regulatory Commission sponsors a large ongoing project, the Accident Sequence Precursor project, to analyze the safety significance of other types of accident precursors, such as those arising from internally-initiated transients and pipe breaks, but earthquakes and fires are not within the current scope. The results of this project are that: (1) an overall step-by-step methodology has been developed for precursors to both fire-initiated and seismic-initiated potential accidents; (2) some stylized case-study examples are provided to demonstrate how the fully-developed methodology works in practice, and (3) a generic seismic-fragility date base for equipment is provided for use in seismic-precursors analyses. 44 refs., 23 figs., 16 tabs.

  4. Ricci flow and quantum theory

    E-Print Network [OSTI]

    Robert Carroll

    2007-11-05T23:59:59.000Z

    We show some relations between Ricci flow and quantum theory via Fisher information and the quantum potential.

  5. Progress in Grid Scale Flow Batteries

    E-Print Network [OSTI]

    2011Year #12;Flow Battery Research at PNNL and Sandia #12 with industries and universities New Generation Redox Flow Batteries, PNNL Developed new generation redox flow

  6. Method for the depth corrected detection of ionizing events from a co-planar grids sensor

    DOE Patents [OSTI]

    De Geronimo, Gianluigi (Syosset, NY); Bolotnikov, Aleksey E. (South Setauket, NY); Carini, Gabriella (Port Jefferson, NY)

    2009-05-12T23:59:59.000Z

    A method for the detection of ionizing events utilizing a co-planar grids sensor comprising a semiconductor substrate, cathode electrode, collecting grid and non-collecting grid. The semiconductor substrate is sensitive to ionizing radiation. A voltage less than 0 Volts is applied to the cathode electrode. A voltage greater than the voltage applied to the cathode is applied to the non-collecting grid. A voltage greater than the voltage applied to the non-collecting grid is applied to the collecting grid. The collecting grid and the non-collecting grid are summed and subtracted creating a sum and difference respectively. The difference and sum are divided creating a ratio. A gain coefficient factor for each depth (distance between the ionizing event and the collecting grid) is determined, whereby the difference between the collecting electrode and the non-collecting electrode multiplied by the corresponding gain coefficient is the depth corrected energy of an ionizing event. Therefore, the energy of each ionizing event is the difference between the collecting grid and the non-collecting grid multiplied by the corresponding gain coefficient. The depth of the ionizing event can also be determined from the ratio.

  7. Intermediate-depth circulation of the Indian and South Pacific Oceans measured by autonomous floats

    E-Print Network [OSTI]

    Davis, Russ E

    2005-01-01T23:59:59.000Z

    circulation of the Pacific Ocean: Flow patterns, tracers,runs in the Indian and Pacific Oceans using the EstimatingIndian and (right) Pacific Oceans from the JPLECCO data-

  8. Heat flow and subsurface temperature distributions in central and western New York. Volume 2

    SciTech Connect (OSTI)

    Hodge, D.S.; Fromm, K.A.

    1982-08-01T23:59:59.000Z

    Existing data in western and central New York indicates the possibility of a low-temperature, direct-use geothermal resource. This report evaluates the heat flow and provides a representation of temperatures at depth in this area. This has been done by: (1) analyzing known temperature distributions, (2) measuring the thermal conductivity of sedimentary rock units. Based on this information, areas of higher-than-normal heat flow and temperatures in possible geothermal source reservoirs are described to aid in targeting areas for the exploitation of geothermal energy in New York.

  9. Dispersion equation for water waves with vorticity and Stokes waves on flows with counter-currents

    E-Print Network [OSTI]

    Vladimir Kozlov; Nikolay Kuznetsov

    2014-06-05T23:59:59.000Z

    The two-dimensional free-boundary problem of steady periodic waves with vorticity is considered for water of finite depth. We investigate how flows with small-amplitude Stokes waves on the free surface bifurcate from a horizontal parallel shear flow in which counter-currents may be present. Two bifurcation mechanisms are described: for waves with fixed Bernoulli's constant and fixed wavelength. In both cases the corresponding dispersion equations serve for defining wavelengths from which Stokes waves bifurcate. Sufficient conditions guaranteeing the existence of roots of these equations are obtained. Two particular vorticity distributions are considered in order to illustrate general results.

  10. IMAGE BASED RENDERING WITH DEPTH CAMERAS: HOW MANY ARE NEEDED? Christopher Gilliam, James Pearson, Mike Brookes and Pier Luigi Dragotti

    E-Print Network [OSTI]

    Dragotti, Pier Luigi

    IMAGE BASED RENDERING WITH DEPTH CAMERAS: HOW MANY ARE NEEDED? Christopher Gilliam, James Pearson London Exhibition Road, SW7 2AZ, London, United Kingdom. ABSTRACT Image based rendering is a technique of traditional color images with depth images. This combination promises to improve the rendering quality

  11. American Public Opinion on Global Warming in the American States: An In-Depth Study of Florida, Maine, and Massachusetts

    E-Print Network [OSTI]

    Ford, Andrew

    1 American Public Opinion on Global Warming in the American States: An In-Depth Study of Florida Public Opinion on Global Warming in the American States: An In-Depth Study of Florida, Maine warming has been happening · What might have caused global warming · Whether global warming

  12. Ring diagram analysis of near-surface flows in the Sun

    E-Print Network [OSTI]

    Sarbani Basu; H. M. Antia; S. C. Tripathy

    1998-09-24T23:59:59.000Z

    Ring diagram analysis of solar oscillation power spectra obtained from MDI data is carried out to study the velocity fields in the outer part of the solar convection zone. The three dimensional power spectra are fitted to a model which has a Lorentzian profile in frequency and which includes the advection of the wave front by horizontal flows, to obtain the two components of the sub-surface flows as a function of the horizontal wave number and radial order of the oscillation modes. This information is then inverted using OLA and RLS methods to infer the variation in horizontal flow velocity with depth. The average rotation velocity at different latitudes obtained by this technique agrees reasonably with helioseismic estimates made using frequency splitting data. The shear layer just below the solar surface appears to consist of two parts with the outer part up to a depth of 4 Mm, where the velocity gradient does not show any reversal up to a latitude of 60 degrees. In the deeper part the velocity gradient shows reversal in sign around a latitude of 55 degrees. The zonal flow velocities inferred in the outermost layers appears to be similar to those obtained by other measurements. A meridional flow from equator polewards is found. It has a maximum amplitude of about 30 m/s near the surface and the amplitude is nearly constant in the outer shear layer.

  13. Heat flow and thermotectonic problems of the central Ventura Basin, southern California

    SciTech Connect (OSTI)

    De Rito, R.F.; Lachenbruch, A.H.; Moses, T.H. Jr.; Munroe, R.J. (Geological Survey, Menlo Park, CA (USA))

    1989-01-10T23:59:59.000Z

    The Ventura Basin, southern Califronia, is located near the Big Bend area of the San Andreas fault system, within the Transverse Ranges physiographic province. Continuous equilibrium temperature logs were measured in 12 idle oil wells located within the onshore Ventura Avenue, San Miguelito, Filmore, Oxnard, and West Montalvo fields to an average depth of about 3100 m (10,200 feet). Thermal conductivities were measured on all available samples. Heat flows were calculated with the aid of a thermostratigraphic scheme based on correlative gradient intervals and average thermal conductivity for the appropriate units. Negative curvature of the Ventura Avenue temperature profiles may be explained by an increase in thermal conductivity associated with tectonic compaction of the underlying Pliocene clastic sequence. Temperature profiles at Fillmore are enigmatic but suggest highly unusual geotectonic conditions. Basinwide, heat flow averages about 48 mW/m{sup 2}, a value which is low relative to most of southern California. As heat flow does not vary systematically to the maximum measured depth of about 4 km, this anomaly is not easily explained in terms of hydrologic effect or recent uplift and erosion. However, a diminution of heat flow is an expectable consequence of the accumulation of cold sediments (up to 12 km) since Eocene time. If 70 mW/m{sub 2} is accepted as the background heat flow, then the sedimentation effect is probably sufficient to explain the anomaly.

  14. The Big Flow

    E-Print Network [OSTI]

    P. Sikivie

    2001-12-04T23:59:59.000Z

    The late infall of cold dark matter onto an isolated galaxy, such as our own, produces streams and caustics in its halo. The outer caustics are topological spheres whereas the inner caustics are rings. The self-similar model of galactic halo formation predicts that the caustic ring radii $a_n$ follow the approximate law $a_n \\sim 1/n$. In a study of 32 extended and well-measured external galactic rotation curves evidence was found for this law. In the case of the Milky Way, the locations of eight sharp rises in the rotation curve fit the prediction of the self-similar model at the 3% level. Moreover, a triangular feature in the IRAS map of the galactic plane is consistent with the imprint of a ring caustic upon the baryonic matter. These observations imply that the dark matter in our neighborhood is dominated by a single flow. Estimates of that flow's density and velocity vector are given.

  15. Structural power flow measurement

    SciTech Connect (OSTI)

    Falter, K.J.; Keltie, R.F.

    1988-12-01T23:59:59.000Z

    Previous investigations of structural power flow through beam-like structures resulted in some unexplained anomalies in the calculated data. In order to develop structural power flow measurement as a viable technique for machine tool design, the causes of these anomalies needed to be found. Once found, techniques for eliminating the errors could be developed. Error sources were found in the experimental apparatus itself as well as in the instrumentation. Although flexural waves are the carriers of power in the experimental apparatus, at some frequencies longitudinal waves were excited which were picked up by the accelerometers and altered power measurements. Errors were found in the phase and gain response of the sensors and amplifiers used for measurement. A transfer function correction technique was employed to compensate for these instrumentation errors.

  16. Convective heat flow probe

    DOE Patents [OSTI]

    Dunn, J.C.; Hardee, H.C.; Striker, R.P.

    1984-01-09T23:59:59.000Z

    A convective heat flow probe device is provided which measures heat flow and fluid flow magnitude in the formation surrounding a borehole. The probe comprises an elongate housing adapted to be lowered down into the borehole; a plurality of heaters extending along the probe for heating the formation surrounding the borehole; a plurality of temperature sensors arranged around the periphery of the probe for measuring the temperature of the surrounding formation after heating thereof by the heater elements. The temperature sensors and heater elements are mounted in a plurality of separate heater pads which are supported by the housing and which are adapted to be radially expanded into firm engagement with the walls of the borehole. The heat supplied by the heater elements and the temperatures measured by the temperature sensors are monitored and used in providing the desired measurements. The outer peripheral surfaces of the heater pads are configured as segments of a cylinder and form a full cylinder when taken together. A plurality of temperature sensors are located on each pad so as to extend along the length and across the width thereof, with a heating element being located in each pad beneath the temperature sensors. An expansion mechanism driven by a clamping motor provides expansion and retraction of the heater pads and expandable packet-type seals are provided along the probe above and below the heater pads.

  17. Innovative Learning Technology Initiative W.S. Hodgkiss

    E-Print Network [OSTI]

    Gleeson, Joseph G.

    Innovative Learning Technology Initiative (ILTI) W.S. Hodgkiss AVC Academic Personnel and Resources 29 October 2013 #12;Innovative Learning Technology Initiative (ILTI) Established January 2013-16) #12;Innovative Learning Technology Initiative (ILTI) Components Courses and Course Components Goal

  18. Large elliptic flow in low multiplicity pp collisions at LHC energy $\\sqrt{s}$=14 TeV

    E-Print Network [OSTI]

    A. K. Chaudhuri

    2010-06-25T23:59:59.000Z

    We explore the possibility of observing elliptic flow in low multiplicity events in central pp collisions at LHC energy, $\\sqrt{s}$=14 TeV. It is assumed that the initial interactions produces a number of hot spots. Hydrodynamical evolution of two or more hot spots can generate sufficiently large elliptic flow to be accessible experimentally in 4-th order cumulant analysis.

  19. Damage detection in initially nonlinear systems

    SciTech Connect (OSTI)

    Bornn, Luke [Los Alamos National Laboratory; Farrar, Charles [Los Alamos National Laboratory; Park, Gyuhae [Los Alamos National Laboratory

    2009-01-01T23:59:59.000Z

    The primary goal of Structural Health Monitoring (SHM) is to detect structural anomalies before they reach a critical level. Because of the potential life-safety and economic benefits, SHM has been widely studied over the past decade. In recent years there has been an effort to provide solid mathematical and physical underpinnings for these methods; however, most focus on systems that behave linearly in their undamaged state - a condition that often does not hold in complex 'real world' systems and systems for which monitoring begins mid-lifecycle. In this work, we highlight the inadequacy of linear-based methodology in handling initially nonlinear systems. We then show how the recently developed autoregressive support vector machine (AR-SVM) approach to time series modeling can be used for detecting damage in a system that exhibits initially nonlinear response. This process is applied to data acquired from a structure with induced nonlinearity tested in a laboratory environment.

  20. Sunshot Initiative High Penetration Solar Portal

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    The DOE SunShot Initiative is a collaborative national initiative to make solar energy cost-competitive with other forms of energy by the end of the decade. Reducing the installed cost of solar energy systems by about 75% will drive widespread large-scale adoption of this renewable energy and restore U.S. leadership in the global clean energy race. The High Penetration Solar Portal was created as a resource to aggregate the most relevant and timely information related to high penetration solar scenarios and integrating solar into the grid. The site is designed so that utilities, grant awardees, regulators, researchers, and other solar professionals can easily share data, case studies, lessons learned, and demonstration project findings. [from https://solarhighpen.energy.gov/about_the_high_penetration_solar_portal