Sample records for freight flows passenger

  1. Two algorithms for the sorting of unknown train vibration signals into freight and passenger train

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Two algorithms for the sorting of unknown train vibration signals into freight and passenger train in particular. To facilitate this, two algorithms have been constructed with the aim of sorting unknown train vibration signals into freight and passenger train categories so that they can be further analysed. 307

  2. RELATIONSHIP BUILDING WITH FREIGHT RAILROADS CRITICAL TO SUPPORT INTERCITY PASSENGER RAIL DEVELOPMENT

    E-Print Network [OSTI]

    Illinois at Chicago, University of

    .4 million (2011) 93% of Amtrak's approximately 21,000 route system utilizes freight railroad owned Relationship between freight railroads and governments remains highly combative HOW CAN GOVERNMENT ENHANCE animosity; address issues through established relationships and dialog over regulation Generate Utility

  3. A Geographical Information System-Based Decision Support Tool: GeoFreight

    E-Print Network [OSTI]

    Laboratory managed by UT-Battelle, LLC for the U.S. Department of Energy under Contract number DE-AC05-00OR22725 Research Areas Freight Flows Passenger Flows Supply Chain Efficiency Transportation: Energy@ornl.gov or hwanghl@ornl.gov The Port Statistics menu, accessed from the Major Ports map, allows the user to examine

  4. Mixing Fast Trains on Freight Rail Corridors presented by

    E-Print Network [OSTI]

    Minnesota, University of

    Mixing Fast Trains on Freight Rail Corridors presented by: Minnesota Department of Transportation May 23, 2012 #12;Presentation Outline · State Plans for Fast (Passenger) Trains · Overarching) Suggest picture of CP grain train be inserted here #12;Passenger Rail Development Overarching Principles

  5. Intermodal passenger flows on London's public transport network : automated inference of full passenger journeys using fare-transaction and vehicle-location data

    E-Print Network [OSTI]

    Gordon, Jason B. (Jason Benjamin)

    2012-01-01T23:59:59.000Z

    Urban public transport providers have historically planned and managed their networks and services with limited knowledge of their customers' travel patterns. While ticket gates and bus fareboxes yield counts of passenger ...

  6. FREIGHT CONTAINER LIFTING STANDARD

    SciTech Connect (OSTI)

    POWERS DJ; SCOTT MA; MACKEY TC

    2010-01-13T23:59:59.000Z

    This standard details the correct methods of lifting and handling Series 1 freight containers following ISO-3874 and ISO-1496. The changes within RPP-40736 will allow better reading comprehension, as well as correcting editorial errors.

  7. Transforming California's Freight Transport System

    E-Print Network [OSTI]

    California at Davis, University of

    Transforming California's Freight Transport System Policy Forum on the Role of Freight Transport Standard #12;2050 Vision- Key Conceptual Outcomes Technology Transformation Early Action Cleaner Combustion Multiple Strategies Federal Action Efficiency Gains Energy Transformation 9 #12;Further reduce localized

  8. Strategic Freight Transportation Contract Procurement

    E-Print Network [OSTI]

    Nandiraju, Srinivas

    2006-01-01T23:59:59.000Z

    for truckload service contract procurement. Truckloadgiven the details of new service contracts including: demandin auctions for freight service contract procurement. 1.3.1

  9. Freight Wing Trailer Aerodynamics

    SciTech Connect (OSTI)

    Graham, Sean (Primary Investigator); Bigatel, Patrick

    2004-10-17T23:59:59.000Z

    Freight Wing Incorporated utilized the opportunity presented by this DOE category one Inventions and Innovations grant to successfully research, develop, test, patent, market, and sell innovative fuel and emissions saving aerodynamic attachments for the trucking industry. A great deal of past scientific research has demonstrated that streamlining box shaped semi-trailers can significantly reduce a truck's fuel consumption. However, significant design challenges have prevented past concepts from meeting industry needs. Market research early in this project revealed the demands of truck fleet operators regarding aerodynamic attachments. Products must not only save fuel, but cannot interfere with the operation of the truck, require significant maintenance, add significant weight, and must be extremely durable. Furthermore, SAE/TMC J1321 tests performed by a respected independent laboratory are necessary for large fleets to even consider purchase. Freight Wing used this information to create a system of three practical aerodynamic attachments for the front, rear and undercarriage of standard semi trailers. SAE/TMC J1321 Type II tests preformed by the Transportation Research Center (TRC) demonstrated a 7% improvement to fuel economy with all three products. If Freight Wing is successful in its continued efforts to gain market penetration, the energy and environmental savings would be considerable. Each truck outfitted saves approximately 1,100 gallons of fuel every 100,000 miles, which prevents over 12 tons of CO2 from entering the atmosphere. If all applicable trailers used the technology, the country could save approximately 1.8 billion gallons of diesel fuel, 18 million tons of emissions and 3.6 billion dollars annually.

  10. 2010 Minnesota Comprehensive Statewide Freight and Passenger Rail Plan

    E-Print Network [OSTI]

    Minnesota, University of

    and transit connections ·! Positive return on investment, 1.5-2.5 times more than cost ·! Bridge, bottleneck for rail investment creates a unique opportunity ·! Global and national economic and environmental trends are likely to increase fuel costs and impose controls on greenhouse gas emission ·! Therefore, Minnesota

  11. Minnesota Comprehensive Statewide Freight and Passenger Rail Plan

    E-Print Network [OSTI]

    Minnesota, University of

    demand Life Sciences Recognized world leader in medical equipment and advanced healthcare Energy Sources: Bureau of Economic Analysis and Bureau of Labor Statistics. #12;4 Key Minnesota Industries Long; uncertainties for dairy Paper and Wood Expansions at existing paper facilities; Exports balancing low domestic

  12. STATE-OF-THE-PRACTICE IN FREIGHT DATA: A REVIEW OF AVAILABLE FREIGHT DATA IN THE U.S.

    E-Print Network [OSTI]

    Texas at Austin, University of

    procedures, freight demand characteristics, freight data quality control procedures, freight database, survey method, quality control procedure, geographical coverage, frequency of updates of each publicly available database, and the available documentation of commercial databases. In total, 31

  13. Fact #846: November 10, 2014 Trucks Move 70% of all Freight by Weight and 74% of Freight by Value Dataset

    Broader source: Energy.gov [DOE]

    Excel file with dataset for Fact #846:Trucks Move 70% of all Freight by Weight and 74% of Freight by Value

  14. Freight Analysis Framework version 3 (FAF3)

    E-Print Network [OSTI]

    Freight Analysis Framework version 3 (FAF3) Oak Ridge National Laboratory managed by UT Technologies Research Brief T he Freight Analysis Framework version 3 (FAF3) database is a Federal Highway data to enable users to perform train analysis. FAF3 Geography Figure 1 shows the analysis regions

  15. Methodology for Estimating ton-Miles of Goods Movements for U.S. Freight Mulitimodal Network System

    SciTech Connect (OSTI)

    Oliveira Neto, Francisco Moraes [ORNL] [ORNL; Chin, Shih-Miao [ORNL] [ORNL; Hwang, Ho-Ling [ORNL] [ORNL

    2013-01-01T23:59:59.000Z

    Ton-miles is a commonly used measure of freight transportation output. Estimation of ton-miles in the U.S. transportation system requires freight flow data at disaggregated level (either by link flow, path flows or origin-destination flows between small geographic areas). However, the sheer magnitude of the freight data system as well as industrial confidentiality concerns in Census survey, limit the freight data which is made available to the public. Through the years, the Center for Transportation Analysis (CTA) of the Oak Ridge National Laboratory (ORNL) has been working in the development of comprehensive national and regional freight databases and network flow models. One of the main products of this effort is the Freight Analysis Framework (FAF), a public database released by the ORNL. FAF provides to the general public a multidimensional matrix of freight flows (weight and dollar value) on the U.S. transportation system between states, major metropolitan areas, and remainder of states. Recently, the CTA research team has developed a methodology to estimate ton-miles by mode of transportation between the 2007 FAF regions. This paper describes the data disaggregation methodology. The method relies on the estimation of disaggregation factors that are related to measures of production, attractiveness and average shipments distances by mode service. Production and attractiveness of counties are captured by the total employment payroll. Likely mileages for shipments between counties are calculated by using a geographic database, i.e. the CTA multimodal network system. Results of validation experiments demonstrate the validity of the method. Moreover, 2007 FAF ton-miles estimates are consistent with the major freight data programs for rail and water movements.

  16. Vehicle hydraulic system that provides heat for passenger compartment

    DOE Patents [OSTI]

    Bartley, Bradley E. (Manito, IL); Blass, James R. (Bloomington, IL); Gibson, Dennis H. (Chillicothe, IL)

    2001-01-01T23:59:59.000Z

    A vehicle includes a vehicle housing which defines a passenger compartment. Attached to the vehicle housing is a hydraulic system, that includes a hydraulic fluid which flows through at least one passageway within the hydraulic system. Also attached to the vehicle housing is a passenger compartment heating system. The passenger compartment heating system includes a heat exchanger, wherein a portion of the heat exchanger is a segment of the at least one passageway of the hydraulic system.

  17. A Note on Multistage Methods for Freight Train Classification

    E-Print Network [OSTI]

    2012-11-21T23:59:59.000Z

    Freight Train Classification. Dirk Briskorn. 1. , Florian Jaehn. 2,?. November, 2012. 1 Universitt Siegen, Lehrstuhl fr Quantitative Planung, Hlderlinstrae 3,

  18. Executive Education Program Freight Transportation and

    E-Print Network [OSTI]

    Bustamante, Fabián E.

    Executive Education Program Freight Transportation and Logistics: Delivering Results in a Volatile Environment September 9 ­11, 2013 Northwestern University Transportation Center NonprofitOrganization U.S.Postage PAID NorthwesternUniversity TransportationCenter RobertR.McCormickSchool of

  19. A Note on Multistage Methods for Freight Train Classification

    E-Print Network [OSTI]

    Dirk Briskorn

    2012-11-21T23:59:59.000Z

    Nov 21, 2012 ... Abstract: The paper Multistage Methods for Freight Train Classification by Jacob et al. ([2]) provides a great insight to the theory and practice...

  20. Emissions and Air Quality Impacts of Freight Transportation Erica Bickford

    E-Print Network [OSTI]

    Wisconsin at Madison, University of

    Emissions and Air Quality Impacts of Freight Transportation by Erica Bickford A dissertation rights reserved. #12;Abstract Emissions and Air Quality Impacts of Freight Transportation Erica Bickford.S. transportation is the largest source of national nitrogen oxide (NOx) emissions and the third largest source

  1. Multistage Methods for Freight Train Classification Riko Jacob1

    E-Print Network [OSTI]

    Riko Jacob

    Multistage Methods for Freight Train Classification Riko Jacob1 , Peter M´arton2 , Jens Maue3 , and Marc Nunkesser3 1 Computer Science Department, TU M¨unchen, Germany jacob@in.tum.de 2 Faculty, train classification 1 Introduction In real-world railways, a freight train consists of an engine

  2. American Institute of Aeronautics and Astronautics AERODYNAMIC OPTIMIZATION FOR FREIGHT

    E-Print Network [OSTI]

    Roy, Chris

    American Institute of Aeronautics and Astronautics 1 AERODYNAMIC OPTIMIZATION FOR FREIGHT TRUCKS and Astronautics 2 controls,4 , flight trajectories,5 wings and airfoils,6,7,9,10 inlets,14 rockets,16,19 missiles

  3. Freight Shuttle System: Cross-Border Movement of Goods

    SciTech Connect (OSTI)

    None

    2011-05-31T23:59:59.000Z

    The Freight Shuttle System (FSS) is designed to provide freight transportation services between those short and intermediate distance locations (within 600 miles) that are currently handling large volumes of freight traffic. Much like trucks, the FSS's transporters are autonomous: each transporter has its own propulsion and travels independently of other transporters. Inspired by railroads, each FSS transporter has steel wheels operating on a steel running surface and can carry either a standardsize freight container or an over-the-road truck trailer. However, unlike either rail or trucks, the FSS runs on an elevated, dedicated guideway to avoid the interference of other transportation systems. The objective of this report is to examine the potential viability for an alternative transportation system for trailers and containers in a multi-national, cross-border setting. The El Paso-Ciudad Juarez region serves as the environment of this analysis.

  4. Optimal capital structure of deep sea foreign freight transportation companies

    E-Print Network [OSTI]

    Georgiadis, Vasilis

    2014-01-01T23:59:59.000Z

    This thesis aims to understand the optimal leverage range for shipping companies (maritime foreign freight transportation companies - SIC 4412), through data analysis. This study confirms that in a traditional industry ...

  5. Inbound freight consolidation : a simulation model to evaluate consolidation rules

    E-Print Network [OSTI]

    Ford, Daniel J. (Daniel Jerome)

    2006-01-01T23:59:59.000Z

    In logistics, freight can be consolidated over time (temporally) or over space (spatially). This thesis presents a simulation model to evaluate temporal and spatial consolidation rules. The model is the result of a research ...

  6. Streamlining Transportation Corridor Planning Processess: Freight and Traffic Information

    SciTech Connect (OSTI)

    Franzese, Oscar [ORNL

    2010-08-01T23:59:59.000Z

    The traffic investigation is one of the most important parts of an Environmental Impact Statement of projects involving the construction of new roadway facilities and/or the improvement of existing ones. The focus of the traffic analysis is on the determination of anticipated traffic flow characteristics of the proposed project, by the application of analytical methods that can be grouped under the umbrella of capacity analysis methodologies. In general, the main traffic parameter used in EISs to describe the quality of traffic flow is the Level of Service (LOS). The current state of the practice in terms of the traffic investigations for EISs has two main shortcomings. The first one is related to the information that is necessary to conduct the traffic analysis, and specifically to the lack of integration among the different transportation models and the sources of information that, in general, reside in GIS databases. A discussion of the benefits of integrating CRS&SI technologies and the transportation models used in the EIS traffic investigation is included. The second shortcoming is in the presentation of the results, both in terms of the appearance and formatting, as well as content. The presentation of traffic results (current and proposed) is discussed. This chapter also addresses the need of additional data, in terms of content and coverage. Regarding the former, other traffic parameters (e.g., delays) that are more meaningful to non-transportation experts than LOS, as well as additional information (e.g., freight flows) that can impact traffic conditions and safety are discussed. Spatial information technologies can decrease the negative effects of, and even eliminate, these shortcomings by making the relevant information that is input to the models more complete and readily available, and by providing the means to communicate the results in a more clear and efficient manner. The benefits that the application and use of CRS&SI technologies can provide to improve and expedite the traffic investigation part of the EIS process are presented.

  7. State-of-the art of freight forecast modeling: lessons learned and the road ahead

    E-Print Network [OSTI]

    Chow, Joseph Y.; Yang, Choon Heon; Regan, Amelia C.

    2010-01-01T23:59:59.000Z

    of-the art of freight forecast modeling: lessons learned andof goods as well as to forecast the expected future truckused for the short-term forecasts of freight volumes on

  8. Merging qualitative and quantitative criteria for freight investment using scenario planning

    E-Print Network [OSTI]

    Snchez-Valero, Miguel ngel

    2011-01-01T23:59:59.000Z

    Freight transportation is vital to the economy of the United States. The total volume of freight moving inside the nation is expected to continue growing, while the U.S. transportation system is aging and becoming more ...

  9. Mitigating the Social and Environmental Impacts of Multimodal Freight Corridor Operations at Southern California Ports

    E-Print Network [OSTI]

    Recker, Will W

    2008-01-01T23:59:59.000Z

    SPBP freight traffic, air pollution, and the health of localSPBP freight traffic, air pollution, and the health of localhealth impact assessment to quantitatively assess the characteristics of the populations bearing the brunt of air pollution

  10. Towards Ridesharing with Passenger Transfers (Extended Abstract)

    E-Print Network [OSTI]

    Veloso, Manuela M.

    through the use of smart phones. Drivers offer transport to passengers in exchange for sharing fuel costs. There are currently over 600 ridesharing services [2]. A ridesharing problem is defined by a set of vehicles, a set of passengers, and a map. Each vehicle and passenger has a starting and ending location. Vehicles have

  11. Tipagornwong and Figliozzi 1 An Analysis of the Competitiveness of Freight Tricycle Delivery Services in

    E-Print Network [OSTI]

    Bertini, Robert L.

    . Freight tricycles, also known as electric- assisted trikes, are low-emissions vehicles powered by a combination of human effort and an electric engine. This research develops a cost model incorporating vehicle of freight tricycles, low-capacity freight delivery vehicles, as compared to diesel vans in urban areas

  12. The Freight Shuttle System: Automated-Secure Trade

    E-Print Network [OSTI]

    the same volume) #12;HDD Truck vs. FSS (CO2 required to service the same volume) #12;Next Steps · Finalize footprint guide way ­ To be built within existing highway ROW The Freight Shuttle System 24/7 operations transportation #12;#12;#12;#12;Port of Entry Security #12;Ciudad Juarez El Paso Scan-in-motion Scan

  13. William W. Hay Railroad Engineering Seminar Freight Railroad Energy

    E-Print Network [OSTI]

    Barkan, Christopher P.L.

    (importance v difficulties) North American freight RRs (defining characteristics) Energy density of diesel fuel & alternatives (Btu's per gallon) Biodiesel, Fischer-Tropsch syn fuel & DME Liquefied natural of European RRs (lessons learned) Dual-mode locomotives ("electro-diesels") Unconventional alternatives

  14. Optimizing the Aerodynamic Efficiency of IM Freight Trains

    E-Print Network [OSTI]

    Barkan, Christopher P.L.

    Optimizing the Aerodynamic Efficiency of IM Freight Trains Yung-Cheng Lai University of Illinois aerodynamic penalties and fuel consumption than general trains IM trains suffer from their equipment design and loading pattern These large gaps directly affect the aerodynamic drag of the train. This effect is greater

  15. Optimizing the aerodynamic efficiency of intermodal freight trains

    E-Print Network [OSTI]

    Barkan, Christopher P.L.

    Optimizing the aerodynamic efficiency of intermodal freight trains Yung-Cheng Lai a,*, Christopher form 24 April 2007; accepted 17 May 2007 Abstract We develop an aerodynamic loading assignment model fuel-efficient trains. This is the first use of optimization modeling to address the aerodynamics

  16. Freight/logistics symposium ..2 Airport guidebook...................3

    E-Print Network [OSTI]

    Minnesota, University of

    · Freight/logistics symposium ..2 · Airport guidebook...................3 · State Fair exhibit Administration in Boston, is charged with improving the nation's transpor- tation system through collaborations between the USDOT and other federal, state, local, and international agencies and entities. "This

  17. Advances in Diesel Engine Technologies for European Passenger...

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

    Diesel Engine Technologies for European Passenger Vehicles Advances in Diesel Engine Technologies for European Passenger Vehicles 2002 DEER Conference Presentation: Volkswagen AG...

  18. Thermoelectric Waste Heat Recovery Program for Passenger Vehicles...

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

    Thermoelectric Waste Heat Recovery Program for Passenger Vehicles Thermoelectric Waste Heat Recovery Program for Passenger Vehicles 2013 DOE Hydrogen and Fuel Cells Program and...

  19. Thermoelectric Waste Heat Recovery Program for Passenger Vehicles...

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

    Waste Heat Recovery Program for Passenger Vehicles Thermoelectric Waste Heat Recovery Program for Passenger Vehicles 2012 DOE Hydrogen and Fuel Cells Program and Vehicle...

  20. FedEx Freight Delivers on Clean Energy | Department of Energy

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

    by Latham, NY -based Plug Power. Refueling equipment and hydrogen will be supplied by Air Products of Allentown, PA. The forklift conversion project illustrates FedEx Freight's...

  1. Promoting technological investment in the Australian rail freight sector: evaluating the feasibility of accelerated depreciation.

    E-Print Network [OSTI]

    Koowattanatianchai, Nattawoot

    2011-01-01T23:59:59.000Z

    ??Although regulation for emissions, pollution, etc., is becoming stricter, the Australian rail freight industry is still locked in to using large numbers of existing rolling (more)

  2. E-Print Network 3.0 - analytic intermodal freight Sample Search...

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

    Summary: these were given the highest priority in the simulations. Of the freight trains considered, intermodal trains... . For example we use "intermodal" as shorthand to...

  3. Health Impacts of Moving Freight In and Out of the Ports of Long Beach and Los Angeles

    E-Print Network [OSTI]

    2010-01-01T23:59:59.000Z

    and Health Impacts of Port-Related Freight Movement in aMoving Freight In and Out of the Ports of Long Beach and LosISSUE The San Pedro Bay Port (SPBP) of Los Angeles and Long

  4. Health Impacts of Moving Freight In and Our of the Ports of Long Beach and Los Angeles

    E-Print Network [OSTI]

    2010-01-01T23:59:59.000Z

    and Health Impacts of Port-Related Freight Movement in aMoving Freight In and Out of the Ports of Long Beach and LosISSUE The San Pedro Bay Port (SPBP) of Los Angeles and Long

  5. An Econometrics Analysis of Freight Rail Demand Growth in Albert Wijeweera a, *

    E-Print Network [OSTI]

    1 An Econometrics Analysis of Freight Rail Demand Growth in Australia Albert Wijeweera a, * , Hong of non-bulk freight demand in Australia. The paper uses a simple but robust econometrics method this growth at about four per cent per year (BTRE, 2006). The econometric model used herein enables us

  6. Service quality planning for freight distribution with time windows in large networks

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    as a quality factor of the service, since its nature and configuration also affects the total transportation1 Service quality planning for freight distribution with time windows in large networks Francesco introduces a methodology whose aim is to evaluate how the quality of a freight distribution service with time

  7. Transportation Energy Futures Series: Freight Transportation Demand: Energy-Efficient Scenarios for a Low-Carbon Future

    SciTech Connect (OSTI)

    Grenzeback, L. R.; Brown, A.; Fischer, M. J.; Hutson, N.; Lamm, C. R.; Pei, Y. L.; Vimmerstedt, L.; Vyas, A. D.; Winebrake, J. J.

    2013-03-01T23:59:59.000Z

    Freight transportation demand is projected to grow to 27.5 billion tons in 2040, and to nearly 30.2 billion tons in 2050. This report describes the current and future demand for freight transportation in terms of tons and ton-miles of commodities moved by truck, rail, water, pipeline, and air freight carriers. It outlines the economic, logistics, transportation, and policy and regulatory factors that shape freight demand, the trends and 2050 outlook for these factors, and their anticipated effect on freight demand. After describing federal policy actions that could influence future freight demand, the report then summarizes the capabilities of available analytical models for forecasting freight demand. This is one in a series of reports produced as a result of the Transportation Energy Futures project, a Department of Energy-sponsored multi-agency effort to pinpoint underexplored strategies for reducing GHGs and petroleum dependence related to transportation.

  8. ANALYSIS OF THE NON LINEAR DYNAMICS OF A 2AXLE FREIGHT WAGON IN CURVES

    E-Print Network [OSTI]

    and trucks continuously requires to increase the capacity on modern freight wagons. In order to reach this objective two options are available, increasing the total hauled mass or raising the speed of the wagons

  9. Estimation of economic impact of freight distribution due to highway closure

    E-Print Network [OSTI]

    Hu, Shiyin

    2008-01-01T23:59:59.000Z

    The main aim of this study is to provide a theoretical framework and methodology to estimate and analyze the economic impact of freight disruption due to highway closure. The costs in this study will be classified into ...

  10. THE POTENTIAL FOR CO2 EMISSIONS TRADING IN TRANSPORT: THE CASE OF PERSONAL VEHICLES AND FREIGHT

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    1 THE POTENTIAL FOR CO2 EMISSIONS TRADING IN TRANSPORT: THE CASE OF PERSONAL VEHICLES AND FREIGHT, it is of some interest to explore the inclusion of road transport in emission trading schemes. Starting from

  11. Contracting Rail Freight Services for Country Elevators in the Texas Panhandle.

    E-Print Network [OSTI]

    Fuller, Stephen

    1984-01-01T23:59:59.000Z

    rooe ZTA245.7 B873 r\\O. 1473 -.-_ LIBRARY B-1473 JUDe 1984 JUL 27 1984 Co Rail Freight Services for Country Elevators in the Texas Panhandle The Texas Agricultural Experiment Station, Neville P. Clarke, Director, The Texas A&M University... ............................................................... 14 ACKNOWLEDGEMENTS ........................................................... 14 CONTRACTING RAIL FREIGHT-SERVICES FOR COUNTRY ELEVATORS IN THE TEXAS PANHANDLE Stephen Fuller Department of Agricultural Economics Texas Agricultural Experiment...

  12. Intercity Passenger Rail Federal Funding presented by

    E-Print Network [OSTI]

    Minnesota, University of

    Intercity Passenger Rail ­ Federal Funding Process presented by: Minnesota Department, equipment and connections ·! Long term: build efficient HSR network ­! Connecting major population centers ·! Lead state on Milwaukee to Twin Cities segment ·! 2008 state bonding to match federal funds

  13. Exhaust emissions from two intercity passenger locomotives

    SciTech Connect (OSTI)

    Fritz, S.G. (Southwest Research Inst., San Antonio, TX (United States). Dept. of Emissions Research)

    1994-10-01T23:59:59.000Z

    To enhance the effectiveness of intercity passenger rail service in mitigating exhaust emissions in California, the California Department of Transportation (Caltrans) included limits on exhaust emissions in its intercity locomotive procurement specifications. Because there were no available exhaust emission test data on which emission reduction goals could be based, Caltrans funded a test program to acquire gaseous and particulate exhaust emissions data, along with smoke opacity data, from two state-of-the-art intercity passenger locomotives. The two passenger locomotives (an EMD F59PH and a GE DASH8-32BWH) were tested at the Association of American Railroads Chicago Technical Center. The EMD locomotive was equipped with a separate Detroit Diesel Corporation (DDC) 8V-149 diesel engine used to provide 480 V AC power for the trailing passenger cars. This DDC engine was also emission tested. These data were used to quantify baseline exhaust emission levels as a challenge to locomotive manufacturers to offer new locomotives with reduced emissions. Data from the two locomotive engines were recorded at standard fuel injection timing and with the fuel injection timing retarded 4 deg in an effort to reduce NO[sub x] emissions. Results of this emissions testing were incorporated into the Caltrans locomotive procurement process by including emission performance requirements in the Caltrans intercity passenger locomotive specification, and therefore in the procurement decision. This paper contains steady-state exhaust emission test results for hydrocarbons (HC), carbon monoxide (CO), oxides of nitrogen (NO[sub x]), and particulate matter (PM) from the two locomotives. Computed sulfur dioxide (SO[sub 2]) emissions are also given, and are based on diesel fuel consumption and sulfur content. Exhaust smoke opacity is also reported.

  14. Thermal Analysis and Test Program to Evaluate Passenger Compartment Thermal Load Reduction and Improve: Cooperative Research and Development Final Report, CRADA number CRD-07-00231

    SciTech Connect (OSTI)

    Rugh, J.

    2011-05-01T23:59:59.000Z

    This activity supported a GM and NREL collaborative exploration of strategies to minimize and alleviate the temperature rise in the passenger compartment of an automobile during prolonged exposure to solar radiation in hot climates. It developed and exercised math-based models to simulate the air flow and thermal environment in the passenger compartment in order to compare the effectiveness of the strategies. This activity also assessed the strategies using vehicle tests.

  15. http://tti.tamu.edu Multi-modal Transportation > Highway Transportation > Trucking > Railroad transportation > Public transit > Rural transportation > Rural transit > Freight

    E-Print Network [OSTI]

    http://tti.tamu.edu Multi-modal Transportation > Highway Transportation > Trucking > Railroad transportation > Public transit > Rural transportation > Rural transit > Freight pipeline transportation >>> Transportation operat > Freight traffic > Commodities > Travel time > Travel demand > http

  16. NETPLAN Passenger Network Modeling and Simulation

    E-Print Network [OSTI]

    Daniels, Thomas E.

    .31 times existing fleet availability of passengers cars and trucks (in PCE) · Air - No investments ­ 1 per mile? 0.0 20.0 40.0 60.0 80.0 100.0 120.0 140.0 100 150 200 250 300 $/PCE Miles $ travel time cost per PCE (Highway) $ travel time cost per PCE (Air) $ travel time cost per PCE (HSR) 0 0.2 0.4 0.6 0

  17. Association of automobile passenger transportation and economic growth in Japan

    E-Print Network [OSTI]

    Horie, Teruhiko

    1969-01-01T23:59:59.000Z

    ) (Nember) January 1969 ABSTRACT Association cf Automobile Passenger Transportation and Economic Growth in Japan. (January 1969) Teruhiko Boric, B. A. , &faseda University Directed by: Dr. ~felvin L. Greenhut In order to evaluate the growth... of Japanese post-war passenger transportation, a comparative study of the U. S. passenger transporta- ti. on development between 1910 and 1940 has been made. The growth rate of automobile ownership prior to the Great Depression is larger than the rate...

  18. Diesel Passenger Car Technology for Low Emissions and CO2 Compliance...

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

    Passenger Car Technology for Low Emissions and CO2 Compliance Diesel Passenger Car Technology for Low Emissions and CO2 Compliance Cost effective reduction of legislated emissions...

  19. E-Print Network 3.0 - air passenger demand Sample Search Results

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

    passenger transport system. The reason often quoted... by the proponents is that trains are, 'environmentally friendly'. In addition passenger trains can be time Source:...

  20. Cell Cycle . Author manuscript Aurora B kinase, an immobile passenger!

    E-Print Network [OSTI]

    Boyer, Edmond

    Cell Cycle . Author manuscript Page /1 2 Aurora B kinase, an immobile passenger! Marl ne Delacour Keywords Chromosomal passenger complex ; Aurora kinase ; Survivin ; INCENP ; Borealin ; FRAP ; Microtubule composed of Aurora B kinase, Survivin, Borealin and INCENP. The centromeric complex is involved

  1. Shunting passenger trains: getting ready for Marjan van den Akker

    E-Print Network [OSTI]

    Utrecht, Universiteit

    Shunting passenger trains: getting ready for departure Marjan van den Akker Hilbrandt Baarsma Utrecht University P.O. Box 80.089 3508 TB Utrecht The Netherlands #12;Shunting passenger trains: getting of shunting train units on a railway station. Train units arrive at and depart from the station according

  2. Project Information Form Project Title Strategies for Transitioning to Zero-Emission Vehicles--Freight

    E-Print Network [OSTI]

    California at Davis, University of

    Source(s) and Amounts Provided (by each agency or organization) US DOT $38,884 Total Project Cost $38Project Information Form Project Title Strategies for Transitioning to Zero-Emission Vehicles Description of Research Project According to the EIA, freight modes accounted for 29% of transportation fuel

  3. Delivering the Green: The Future of California's Freight Transportation System Summary and Reading List

    E-Print Network [OSTI]

    California at Davis, University of

    List California's freight sector is a critical part of California's economic engine, generating-duty vehicles in California. This includes, in the near term: efficiency improvements in the engines-in electric and hydrogen fuel cell electric powertrains and lower-carbon fuels. · In addition to their energy

  4. The Design of a New Freight Distribution System in Venice1

    E-Print Network [OSTI]

    Daganzo, Carlos F.

    1 The Design of a New Freight Distribution System in Venice1 Flavio Baita, Carlos Daganzo, Walter the transshipment operations from trucks to boats, and the organization of the boat distribution. Currently. Introduction The role of distribution logistics, as a strategic factor for competitive advantage in many

  5. Costs and benefits of logistics pooling for urban freight distribution: scenario

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    logistics; resource sharing; freight transport pooling; policy-oriented modelling; simulation is that of logistics pooling, that can be defined analogously to car-pooling as the common usage of logistics resources). We observe several projects dealing with urban logistics resource sharing in the last years, most

  6. Aerodynamic Analysis of Intermodal Freight Trains Using Machine Vision World Congress on Railway Research, May 22-26, 2011

    E-Print Network [OSTI]

    Illinois at Urbana-Champaign, University of

    Aerodynamic Analysis of Intermodal Freight Trains Using Machine Vision 9 th World Congress. However, intermodal trains use rolling stock that generates significantly greater aerodynamic drag increases annual operating expenditures. There are opportunities to improve intermodal train aerodynamics

  7. Productivity of the U.S. freight rail industry: a review of the past and prospects for the future

    E-Print Network [OSTI]

    Kriem, Youssef

    2011-01-01T23:59:59.000Z

    Productivity growth in the U.S. freight rail industry has slowed in recent years, raising the issue of the sustainability of the significant improvements achieved during the past three decades. Indeed, between 1979 and ...

  8. Passenger-to-train assignment model based on automated data

    E-Print Network [OSTI]

    Zhu, Yiwen, S.M. Massachusetts Institute of Technology

    2014-01-01T23:59:59.000Z

    This thesis aims at developing a methodology for assigning passengers to individual trains using: (i) fare transaction records from Automatic Fare Collection (AFC) system and (ii) the train tracking data from Automatic ...

  9. Effect of a sudden fuel shortage on freight transport in the United States: an overview

    SciTech Connect (OSTI)

    Hooker, J N

    1980-01-01T23:59:59.000Z

    A survey was made of the potential effects of a sudden reduction of fuel supplies on freight transport via truck, rail, water, and pipeline. After a brief discussion of the energy characteristics of each of these modes of transport, short-term strategies for making better use of fuel in a crisis are investigated. Short-term is taken to mean something on the order of six months, and a crisis is taken to be the result of something on the order of a 20% drop in available fuel. Although no succinct or well-established conclusions are drawn, the gist of the paper is that the potential for short-term conservation, without a serious disruption of service, exists but does not appear to be large. It is remarked that it is possible, through further study, to obtain a fairly accurate reckoning of the physical ability of the freight transport network to weather a fuel crisis, but that it is impossible to say in advance what freight carriers will in fact do with the network.

  10. Transportation Energy Futures Series: Freight Transportation Modal Shares: Scenarios for a Low-Carbon Future

    SciTech Connect (OSTI)

    Brogan, J. J.; Aeppli, A. E.; Beagan, D. F.; Brown, A.; Fischer, M. J.; Grenzeback, L. R.; McKenzie, E.; Vimmerstedt, L.; Vyas, A. D.; Witzke, E.

    2013-03-01T23:59:59.000Z

    Truck, rail, water, air, and pipeline modes each serve a distinct share of the freight transportation market. The current allocation of freight by mode is the product of technologic, economic, and regulatory frameworks, and a variety of factors -- price, speed, reliability, accessibility, visibility, security, and safety -- influence mode. Based on a comprehensive literature review, this report considers how analytical methods can be used to project future modal shares and offers insights on federal policy decisions with the potential to prompt shifts to energy-efficient, low-emission modes. There are substantial opportunities to reduce the energy used for freight transportation, but it will be difficult to shift large volumes from one mode to another without imposing considerable additional costs on businesses and consumers. This report explores federal government actions that could help trigger the shifts in modal shares needed to reduce energy consumption and emissions. This is one in a series of reports produced as a result of the Transportation Energy Futures project, a Department of Energy-sponsored multi-agency effort to pinpoint underexplored strategies for reducing GHGs and petroleum dependence related to transportation.

  11. Multi-Materials Vehicle R&D Initiative Lightweight 7+ Passenger...

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

    Materials Vehicle R&D Initiative Lightweight 7+ Passenger Vehicle Multi-Materials Vehicle R&D Initiative Lightweight 7+ Passenger Vehicle 2011 DOE Hydrogen and Fuel Cells Program,...

  12. Life-cycle Environmental Inventory of Passenger Transportation in the United States

    E-Print Network [OSTI]

    Chester, Mikhail V

    2008-01-01T23:59:59.000Z

    Area,Chicago,andNewYorkCity are evaluated capturing passenger transportation life?cycle energyArea, Chicago, and New York City are evaluated capturing passenger trans- portation life-cycle energy

  13. Sustainable Passenger Transportation: Dynamic Ride-Sharing Niels Agatz

    E-Print Network [OSTI]

    Erera, Alan

    are associated with climate change and global warming. Effective usage of empty car seats by ride-sharing may, and pollution. Moreover, ride- sharing allows users to share car-related expenses, which can be substantialSustainable Passenger Transportation: Dynamic Ride-Sharing Niels Agatz Alan Erera

  14. Simulation to assess the efficacy of US airport entry scrreening of passengers for pandemic influenza

    SciTech Connect (OSTI)

    Mcmahon, Benjamin [Los Alamos National Laboratory

    2009-01-01T23:59:59.000Z

    We present our methodology and stochastic discrete-event simulation developed to model the screening of passengers for pandemic influenza at the US port-of-entry airports. Our model uniquely combines epidemiology modelling, evolving infected states and conditions of passengers over time, and operational considerations of screening in a single simulation. The simulation begins with international aircraft arrivals to the US. Passengers are then randomly assigned to one of three states -- not infected, infected with pandemic influenza and infected with other respiratory illness. Passengers then pass through various screening layers (i.e. pre-departure screening, en route screening, primary screening and secondary screening) and ultimately exit the system. We track the status of each passenger over time, with a special emphasis on false negatives (i.e. passengers infected with pandemic influenza, but are not identified as such) as these passengers pose a significant threat as they could unknowingly spread the pandemic influenza virus throughout our nation.

  15. Pollution-Related Health Effects of Truck-to-Train Freight Modal Shifts in the Midwestern United States

    E-Print Network [OSTI]

    Wisconsin at Madison, University of

    by reducing air pollution. Objective: This study sought to quantify the pollution-related health impactsPollution-Related Health Effects of Truck-to-Train Freight Modal Shifts in the Midwestern United Background: Outdoor air pollution causes increases in mortality, cardiovascular events, and respiratory

  16. 208 | Intermodal transportatIon: movIng FreIght In a global economy 7.1 Introduction

    E-Print Network [OSTI]

    Keskinocak, Pinar

    208 | Intermodal transportatIon: movIng FreIght In a global economy #12;7 7.1 Introduction Air become an indispensible part of the world's global economy, holding an important niche in the transport al mutawaly | 209 2010 EnoTransportation Foundation.www.enotrans.com Reprinted from IntermodalTransportation:MovingFreightinaGlobalEconomy

  17. Title: Best Practices in Urban Freight Management: Lessons from an International Survey Submission date: July 31, 2012

    E-Print Network [OSTI]

    Boyer, Edmond

    areas. Trucks and vans provide local "last mile" deliveries and pickups, as well as most medium haul reductions programs, local land use and parking policies, and more stringent national fuel efficiency and emissions standards for heavy duty trucks. More research is needed on intra- metropolitan freight movements

  18. Title: Best Practices in Urban Freight Management: Lessons from an International Survey Submission date: July 31, 2012

    E-Print Network [OSTI]

    Paris-Sud XI, Universit de

    policies, and more stringent national fuel efficiency and emissions standards for heavy duty trucks. More Commercial transport is crucial for the functioning of metropolitan areas. Trucks and vans provide local "last mile" deliveries and pickups, as well as most medium haul freight transport. In metro areas

  19. Personal revised version of: Howitt et al. (2011), Carbon dioxide emissions from international air freight. Paper to appear in

    E-Print Network [OSTI]

    Otago, University of

    2011-01-01T23:59:59.000Z

    presents a methodology to calculate the amount of fuel burnt and the resulting CO2 emissions from New calculated. The total amount of fuel consumed for the international air transport of New Zealand's imports to other nations and/or regions. Using data on fuel uplift, air freight and air craft movements

  20. Schewel and Schipper 1 FOSSIL FREIGHT: HOW MUCH FOSSIL FUEL DOES IT TAKE TO MOVE FOSSIL1

    E-Print Network [OSTI]

    Kammen, Daniel M.

    understanding of the full cost of5 fossil fuel reliance, and help create the foundation for models to analyzeSchewel and Schipper 1 FOSSIL FREIGHT: HOW MUCH FOSSIL FUEL DOES IT TAKE TO MOVE FOSSIL1 FUEL?2.schewel@berkeley.edu)13 UC Berkeley Energy and Resources Group14 310 Barrows Hall15 UC Berkeley16 Berkeley CA 9470917 Cell

  1. 2012 World Conference on Transport Research (WCTR) SIG-2, Antwerp, Belgium, May 21-22 Material flows and local economic structure: port-region linkages

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    flows and local economic structure: port-region linkages in Europe, Japan, and the United States César in the dereliction of port's local linkages, a systematic and comparative empirical analysis remains lacking. One of port-related hinterland flows as well as inadequacies between the volume and the value of freight

  2. Current Trends and Future Challenges in the Freight Railroad Industry: Balancing Private Industry Interests and the Public Welfare

    E-Print Network [OSTI]

    Allen, Sarah; Kelson, Kendra; Migl, Hayden; Schmidt, Rodney; Shoemaker, David; Thomson, Heather

    2008-01-01T23:59:59.000Z

    ?dimensional?impact?on?the?public?welfare,?local,?state,?and?federal?government?entities?play?a? significant?role?in?ensuring?the?industry?operates?efficiently?and?safely.?In?October?2006,?the?Government? Accountability?Office?(GAO)?released?a?report?on...? ? Current?Trends?and?Future?Challenges?in? the?Freight?Railroad?Industry Balancing?Private?Industry?Interests?and?the?Public?Welfare? ? ? ? Sarah?Allen? Kendra?Kelson? Hayden?Migl? Rodney?Schmidt? David?Shoemaker? Heather?Thomson? ? ? A?Report...

  3. Design and Development of a Continuous Precast Prestressed Concrete Bridge System for the Multimodal Freight Shuttle Project

    E-Print Network [OSTI]

    Parkar, Anagha 1984-

    2011-04-27T23:59:59.000Z

    American Society for Testing and Materials CARD Control and Repairability Damage CIP Cast-in-place DAD Damage Avoidance Design DBE Design Basis Earthquake DC Dead load of structural components and nonstructural attachments Ec Modulus of Elasticity... Pretensioned Precast Bulb T PCI Precast Concrete Institute viii SIP Stay-in-place TTI Texas Transportation Institute TxDOT Texas Department of Transportation MFS Multimodal Freight Shuttle NCHRP National Cooperative Highway Research Program NU...

  4. International Experience in Transportation Analysis and Planning

    E-Print Network [OSTI]

    managed by UT-Battelle, LLC for the U.S. Department of Energy under Contract number DE-AC05-00OR22725 Research Areas Freight Flows Passenger Flows Supply Chain Efficiency Transportation: Energy Environment Agency for International Development A team of researchers toured ports and land transport facilities

  5. Aurora B kinase, an immobile passenger! Marlne Delacour-Larose, Hong-Lien Vu, Annie Molla*

    E-Print Network [OSTI]

    Boyer, Edmond

    Aurora B kinase, an immobile passenger! Marlène Delacour-Larose, Hong-Lien Vu, Annie Molla* INSERM words: Chromosomal passenger complex, Aurora kinase, Survivin, INCENP, Borealin, FRAP, Microtubule, Centromere, Kinetochore, Tension. Running title: Aurora B kinase inserm-00438121,version1-2Dec2009 Author

  6. Development of turbocharger for improving passenger car acceleration

    SciTech Connect (OSTI)

    Watanabe, Tsuyoshi; Koike, Takaaki; Furukawa, Hiromu; Ikeya, Nobuyuki; Sakakida, Masaru

    1996-09-01T23:59:59.000Z

    Recently, passenger cars require better acceleration from low engine speed including starting-up in order to decrease the amount of particulate matter (PM) of diesel engines or to improve the driver`s feeling. However, turbocharged cars generally have worse response than the non turbo cars because it takes a few seconds to get the turbocharger rotate up to high speed, usually called Turbo-lag. In order to solve this, various technologies have been developed for a turbocharger itself as well as for charging system such as the sequential system. Here in this paper, the authors focus on the development of the following turbocharger technology to reduce Turbo-lag and to achieve better transient response.

  7. Cell division control by the Chromosomal Passenger Complex

    SciTech Connect (OSTI)

    Waal, Maike S. van der; Hengeveld, Rutger C.C.; Horst, Armando van der; Lens, Susanne M.A., E-mail: s.m.a.lens@umcutrecht.nl

    2012-07-15T23:59:59.000Z

    The Chromosomal Passenger Complex (CPC) consisting of Aurora B kinase, INCENP, Survivin and Borealin, is essential for genomic stability by controlling multiple processes during both nuclear and cytoplasmic division. In mitosis it ensures accurate segregation of the duplicated chromosomes by regulating the mitotic checkpoint, destabilizing incorrectly attached spindle microtubules and by promoting the axial shortening of chromosomal arms in anaphase. During cytokinesis the CPC most likely prevents chromosome damage by imposing an abscission delay when a chromosome bridge connects the two daughter cells. Moreover, by controlling proper cytoplasmic division, the CPC averts tetraploidization. This review describes recent insights on how the CPC is capable of conducting its various functions in the dividing cell to ensure chromosomal stability.

  8. Transportation Energy Futures Series: Freight Transportation Demand: Energy-Efficient Scenarios for a Low-Carbon Future

    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:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear SecurityTensile Strain Switched Ferromagnetism in Layered NbS2Topo II: AnTrainingTransportationsearchDEMAND Freight

  9. The evolution of passenger accessibility in the US airline industry, 1980-2010

    E-Print Network [OSTI]

    Jenkins, James Joseph, M.C.P. Massachusetts Institute of Technology

    2011-01-01T23:59:59.000Z

    Since deregulation, passenger air travel and the airline industry as a whole have changed dramatically. While most previous research has focused on the changes experienced by the airlines, this thesis seeks to understand ...

  10. Examining changes in transit passenger travel behavior through a Smart Card activity analysis

    E-Print Network [OSTI]

    Mojica, Carlos H

    2008-01-01T23:59:59.000Z

    Transit passenger behavior is an area of major interest for public transportation agencies. The relationship between ridership and maintenance projects, however, is unexplored but increasingly relevant in the era of aging ...

  11. THE FUTURE DEMAND FOR ALTERNATIVE FUEL PASSENGER VEHICLES: A DIFFUSION OF INNOVATION APPROACH

    E-Print Network [OSTI]

    Levinson, David M.

    THE FUTURE DEMAND FOR ALTERNATIVE FUEL PASSENGER VEHICLES: A DIFFUSION OF INNOVATION APPROACH UC ....................................................................23 3 MARKET DEVELOPMENT OF ALTERNATIVE FUEL VEHICLES ............................ 26 3.1 SUPPLY OF ALTERNATIVE FUEL VEHICLES

  12. A unified framework for trajectory planning, threat assessment, and semi-autonomous control of passenger vehicles

    E-Print Network [OSTI]

    Anderson, Sterling J., Ph. D. Massachusetts Institute of Technology

    2009-01-01T23:59:59.000Z

    This thesis describes the design of an active safety framework that performs trajectory planning, threat assessment, and semi-autonomous control of passenger vehicles in hazard avoidance scenarios. The vehicle navigation ...

  13. A unified approach to semi-autonomous control of passenger vehicles in hazard avoidance scenarios

    E-Print Network [OSTI]

    Iagnemma, Karl

    This paper describes the design of unified active safety framework that combines trajectory planning, threat assessment, and semi-autonomous control of passenger vehicles into a single constrained-optimal-control-based ...

  14. E-Print Network 3.0 - average european passenger Sample Search...

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

    heavily congested urban rail corridor. When peak-hour demand temporally... exceeds the maximum loading capacity of a train unit, passengers may not be able to board the next...

  15. Estimating train passenger load from automated data systems : application to London Underground

    E-Print Network [OSTI]

    Paul, Elizabeth Cheriyamadam

    2010-01-01T23:59:59.000Z

    The purpose of this thesis is to assess the feasibility of identifying which trains individual passengers take to get from their origin to destination while travelling in a high frequency urban rail transportation system. ...

  16. Statistical Modeling of Freight Train Derailments at Highway-Rail Level Crossings Samantha G. Chadwick, C. Tyler Dick, Mohd Rapik Saat, Christopher P.L. Barkan

    E-Print Network [OSTI]

    Barkan, Christopher P.L.

    discusses level-crossing-caused freight train derailments in a larger risk-analysis context. We generalize an additional tool for decision makers to prioritize level crossings upgrades and/or closures. 2. Development reduction in the risk of level crossings to North American highway users over the past several decades. Much

  17. The impacts of congestion on time-definitive urban freight distribution networks CO2 emission levels: Results from a case study in Portland,

    E-Print Network [OSTI]

    Bertini, Robert L.

    The impacts of congestion on time-definitive urban freight distribution networks CO2 emission Accepted 29 November 2010 Keywords: Vehicle routing Time-dependent travel time speed GHG or CO2 emissions pressures to limit the impacts associated with CO2 emissions are mounting rapidly. A key challenge

  18. The Impacts of Congestion on Time-definitive Urban Freight Distribution1 Networks CO2 Emission Levels: results from a case study in Portland,2

    E-Print Network [OSTI]

    Bertini, Robert L.

    1 The Impacts of Congestion on Time-definitive Urban Freight Distribution1 Networks CO2 Emission pressures to limit the impacts13 associated with CO2 emissions are mounting rapidly. A key challenge on CO2 emissions are hindered by the complexities of vehicle routing18 problems with time

  19. Project Information Form Project Title White Paper on the Future of Passenger Travel Demand in the United

    E-Print Network [OSTI]

    California at Davis, University of

    each agency or organization) DOT $26,383.66 Total Project Cost $26,383.66 Agency ID or Contract NumberProject Information Form Project Title White Paper on the Future of Passenger Travel Demand Project This white paper will summarize recent research findings pertaining to future passenger travel

  20. Personal revised version of: Howitt, O. J. A., et al., Carbon emissions from international cruise ship passengers travel

    E-Print Network [OSTI]

    Otago, University of

    Personal revised version of: Howitt, O. J. A., et al., Carbon emissions from international cruise.enpol.2009.12.050 1 CARBON EMISSIONS FROM INTERNATIONAL CRUISE SHIP PASSENGERS' TRAVEL TO AND FROM NEW-km. The weighted mean energy use per passenger night for the "hotel" function of these cruise vessels was estimated

  1. Modeling the interaction between passenger cars and trucks

    E-Print Network [OSTI]

    Jenkins, Jacqueline Marie

    2004-11-15T23:59:59.000Z

    an easier way to create calibrated traffic flows in driving simulations and to capture vehicle behavior within microscopic traffic simulations. The original design for the prototype was to establish a two-way, real time exchange of vehicle data, however...

  2. Supplement for "Secondary organic aerosol1 formation from idling gasoline passenger vehicle2

    E-Print Network [OSTI]

    Meskhidze, Nicholas

    Supplement for "Secondary organic aerosol1 formation from idling gasoline passenger vehicle2.O. Box 503, FIN-00101 Helsinki, Finland}14 [5]{Department of Chemistry, Atmospheric Science, University experiment show a total concentration of light aromatics of less than 1 ppb.6 Vehicles7 In total six gasoline

  3. Development of Improved Traveler Survey Methods for High-Speed Intercity Passenger Rail Planning

    E-Print Network [OSTI]

    Sperry, Benjamin

    2012-07-16T23:59:59.000Z

    High-speed passenger rail is seen by many in the U.S. transportation policy and planning communities as an ideal solution for fast, safe, and resource-efficient mobility in high-demand intercity corridors. To expand the body of knowledge for high...

  4. Mobile Journey Planning for Bus Passengers Desmond Rainsford and William A Mackaness

    E-Print Network [OSTI]

    1 Mobile Journey Planning for Bus Passengers Desmond Rainsford and William A Mackaness Geography. Developments in mobile technology offer new ways of supporting mobile decision making. One application domain in the area of Location Based Services (LBS) is the delivery of journey plans to a mobile device. Few journey

  5. Tri-Met's Experience With Automatic Passenger Counter and Automatic Vehicle Location Systems

    E-Print Network [OSTI]

    Bertini, Robert L.

    on an earlier draft. #12;Introduction The Tri-County Metropolitan Transportation District of Oregon (TriTri-Met's Experience With Automatic Passenger Counter and Automatic Vehicle Location Systems James State University Portland, OR 97207 This report is benefited from interviews of Tri-Met staff involved

  6. Optimization and Control of a Hydro-Mechanical Transmission based Hybrid Hydraulic Passenger Vehicle

    E-Print Network [OSTI]

    Li, Perry Y.

    Optimization and Control of a Hydro-Mechanical Transmission based Hybrid Hydraulic Passenger Vehicle Perry Y. Li Felicitas Mensing Center for Compact and Efficient Fluid Power, University of Minnesota, Minneapolis, USA ABSTRACT Hydro-mechanical transmission (HMT) based hybrid hydraulic vehicle

  7. ANALYSIS AND CONTROL DESIGN OF A HYDRO-MECHANICAL HYDRAULIC HYBRID PASSENGER VEHICLE

    E-Print Network [OSTI]

    Li, Perry Y.

    for optimal engine management. The hydro-mechanical drive train splits the engine power through two pathsANALYSIS AND CONTROL DESIGN OF A HYDRO-MECHANICAL HYDRAULIC HYBRID PASSENGER VEHICLE Teck Ping, Sim Minneapolis, Minnesota 55455 Email: tpsim@me.umn.edu Perry Y. Li Center for Compact and Efficient Fluid Power

  8. An investigation of the information needs of air passengers traveling to the airport

    E-Print Network [OSTI]

    Burdette, Debra Arlene

    2000-01-01T23:59:59.000Z

    , 1998). As the popularity of air travel continues to increase, the number of trips to and from the airport will inevitably rise also. Passengers will need accurate information about all modes on a total trip basis. This includes the modes of access...

  9. Potential for meeting the EU new passenger car CO? emissions targets

    E-Print Network [OSTI]

    Bhatt, Kandarp

    2011-01-01T23:59:59.000Z

    In 2009, the European Parliament agreed to limit the CO2 emissions from new passenger cars sold in the European Union to an average of 130g/km by 2015. Further, a probable longer-term CO2 emissions target of 95g/km is ...

  10. Optimal Design of Power-Split Transmissions for Hydraulic Hybrid Passenger Vehicles

    E-Print Network [OSTI]

    Li, Perry Y.

    Optimal Design of Power-Split Transmissions for Hydraulic Hybrid Passenger Vehicles Kai Loon Cheong, Perry Y. Li and Thomas R. Chase Abstract-- Hydraulic hybrid vehicles are inherently power dense. Power and input coupled power-split configurations. Keywords: Hybrid vehicles, hydraulics, power-split, engine

  11. Fact #602: December 21, 2009 Freight Statistics by Mode, 2007 Commodity

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

    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 on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE:YearRound-UpHeat PumpRecord ofESPCofConstructionofFY 2011 Report1: MarchDepartment of2008Flow

  12. here are no passengers on planet purple We are all crew. Don't Make Crime Prevention an Alien Concept

    E-Print Network [OSTI]

    Shahriar, Selim

    here are no passengers on planet purple We are all crew. Don't Make Crime Prevention an Alien " " A message from an alien craft was deciphered indicating that Aliens expressed an extra-terrestrial interest

  13. Using Vehicle Taxes to Reduce Carbon Dioxide Emissions Rates of New Passenger Vehicles: Evidence from France, Germany, and Sweden

    E-Print Network [OSTI]

    Klier, Thomas

    France, Germany, and Sweden link vehicle taxes to the carbon dioxide (CO2) emissions rates of passenger vehicles. Based on new vehicle registration data from 20052010, a vehicles tax is negatively correlated with its ...

  14. Cars on a diet : the material and energy impacts of passenger vehicle weight reduction in the U.S.

    E-Print Network [OSTI]

    Cheah, Lynette W. (Lynette Wan Ting)

    2010-01-01T23:59:59.000Z

    Vehicle weight reduction is a known strategy to address growing concerns about greenhouse gas emissions and fuel use by passenger vehicles. We find that every 10% reduction in vehicle weight can cut fuel consumption by ...

  15. Assessment of the potential diversion of air passengers to high-speed rail in the northeast corridor

    E-Print Network [OSTI]

    Clarke, Michael D. D.

    1994-01-01T23:59:59.000Z

    The high level of intercity passenger travel in the Northeast Corridor is supported by densely populated metropolitan city-centers, the suitable distance between the urban areas, and the extent to which economic and social ...

  16. Dynamic Graph Generation for Large Scale Operational Train ...

    E-Print Network [OSTI]

    Frank Fischer

    2011-08-01T23:59:59.000Z

    Aug 1, 2011 ... Abstract: The aim of operational train timetabling is to find a conflict free timetable for a set of passenger and freight trains with predefined...

  17. Reduction of idle knock by EGR in a passenger car diesel engine

    SciTech Connect (OSTI)

    Fukutani, I.; Watanabe, E.

    1984-01-01T23:59:59.000Z

    In order to reduce the diesel idle knock, the effects of EGR on the idling characteristics were investigated on a passenger car equipped with an EGR Idle Knock Reduction System developed for practical use. It was found that EGR was effective not only for reducing idle knock but also for decreasing fuel consumption, smoke density, exhaust emissions and engine vibration. Moreover, the practical range and possibility of the EGR Idle Knock Reduction System were found by clarifying the relationship between EGR, injection timing, cooling water temperature, noise level and fuel consumption.

  18. Phase I of the Near Term Hybrid Passenger Vehicle Development Program. Final report

    SciTech Connect (OSTI)

    Not Available

    1980-10-01T23:59:59.000Z

    The results of Phase I of the Near-Term Hybrid Vehicle Program are summarized. This phase of the program ws a study leading to the preliminary design of a 5-passenger hybrid vehicle utilizing two energy sources (electricity and gasoline/diesel fuel) to minimize petroleum usage on a fleet basis. This report presents the following: overall summary of the Phase I activity; summary of the individual tasks; summary of the hybrid vehicle design; summary of the alternative design options; summary of the computer simulations; summary of the economic analysis; summary of the maintenance and reliability considerations; summary of the design for crash safety; and bibliography.

  19. Climate and Energy Policy for U.S. Passenger Vehicles: A Technology-Rich Economic Modeling and Policy Analysis

    E-Print Network [OSTI]

    -based relationship between income growth and travel demand, turnover of the vehicle stock, and cost-driven investment both in reduction of internal combustion engine (ICE) vehicle fuel consumption as well as in adoptionClimate and Energy Policy for U.S. Passenger Vehicles: A Technology-Rich Economic Modeling

  20. Project Information Form Project Title White Paper on the Future of Passenger Travel Demand in the United

    E-Print Network [OSTI]

    California at Davis, University of

    each agency or organization) Caltrans $26,383 Total Project Cost $26,383 Agency ID or Contract NumberProject Information Form Project Title White Paper on the Future of Passenger Travel Demand DTRT13-G-UTC29 Start and End Dates September 2014 to June 2015 Brief Description of Research Project

  1. The impact of high-speed rail and low-cost carriers on European air passenger traffic

    E-Print Network [OSTI]

    Gummadi, Ramakrishna

    The impact of high-speed rail and low-cost carriers on European air passenger traffic Regina R, and market characteristics on air traffic; and 2) the impact of high-speed rail and low-cost in system-wide air travel demand, whereas the expansion of low-cost carriers has led to a significant

  2. A techno-economic analysis and optimization of Li-ion batteries for light-duty passenger vehicle electrification

    E-Print Network [OSTI]

    McGaughey, Alan

    A techno-economic analysis and optimization of Li-ion batteries for light-duty passenger vehicle thickness a b s t r a c t We conduct a techno-economic analysis of Li-ion NMC-G prismatic pouch battery

  3. A technoregulatory analysis of government regulation and oversight in the United States for the protection of passenger safety in commercial human spaceflight

    E-Print Network [OSTI]

    Leybovich, Michael Elliot

    2009-01-01T23:59:59.000Z

    Commercial human spaceflight looks ready to take off as an industry, with "space tourism" as its first application. Paying passengers are likely to begin taking suborbital spaceflights within the next several years, both ...

  4. Materials Flow Analysis and Dynamic Life-cycle Assessment of Lightweight Automotive Materials in the US Passenger Vehicle Fleet

    E-Print Network [OSTI]

    Cheah, Lynette Wan Ting

    To achieve better fuel economy, automakers are seriously considering vehicle weight and size reduction. This is achieved by using lighter-weight materials like high-strength steel and aluminum, better vehicle design, and ...

  5. Cotton flow

    E-Print Network [OSTI]

    Ali Ulas Ozgur Kisisel; Ozgur Sarioglu; Bayram Tekin

    2008-06-17T23:59:59.000Z

    Using the conformally invariant Cotton tensor, we define a geometric flow, the "Cotton flow", which is exclusive to three dimensions. This flow tends to evolve the initial metrics into conformally flat ones, and is somewhat orthogonal to the Yamabe flow, the latter being a flow within a conformal class. We define an entropy functional, and study the flow of nine homogeneous spaces both numerically and analytically. In particular, we show that the arbitrarily deformed homogeneous 3-sphere flows into the round 3-sphere. Two of the nine homogeneous geometries, which are degenerated by the Ricci flow, are left intact by the Cotton flow.

  6. Testimony to the United States Senate Committee on Energy and Natural Resources POLICIES TO INCREASE PASSENGER CAR AND LIGHT TRUCK FUEL

    E-Print Network [OSTI]

    TO INCREASE PASSENGER CAR AND LIGHT TRUCK FUEL ECONOMY 2:30 pm, Tuesday, January 30, 2007 Dirksen Senate to formulate effective policies to significantly increase motor vehicle fuel economy. The views I express today to supply the world's growing demand for liquid fuels. Why do we need fuel economy policy? For too long we

  7. ALTERNATIVE FUEL VEHICLE (AFV) INFORMATION Over 98% of the U-M auto passenger fleet is flex fuel vehicles (FFV). A FFV is capable of operating on

    E-Print Network [OSTI]

    Kirschner, Denise

    ALTERNATIVE FUEL VEHICLE (AFV) INFORMATION Over 98% of the U-M auto passenger fleet is flex fuel of both. FFV's are equipped with an engine and fuel system designed specifically to be compatible with ethanol's chemical properties. FFV's qualify as alternative fuel vehicles under the Energy Policy Act

  8. Since 1975, the fuel economy of passenger cars and light trucks has been regulated by the corporate average fuel economy (CAFE) standards,

    E-Print Network [OSTI]

    Since 1975, the fuel economy of passenger cars and light trucks has been regulated by the corporate average fuel economy (CAFE) standards, established during the energy crises of the 1970s. Calls to increase fuel economy are usually met by a fierce debate on the effectiveness of the CAFE standards

  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. 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.

  11. Planning for Freight Management: Urban Freight and Gateway Strategies

    E-Print Network [OSTI]

    California at Davis, University of

    Low Low Off-hours deliveries High Medium Intelligent Transport Systems (ITS) Medium Medium Environment and parking regulations Medium High Local planning policy High High City logistics and consolidation programs Truck fuel efficiency and emissions standards High High Alternative fuels and vehicles Low Medium Low

  12. Strategic Freight Transportation Contract Procurement

    E-Print Network [OSTI]

    Nandiraju, Srinivas

    2006-01-01T23:59:59.000Z

    Based Procurement for Transportation Services, Journal ofCoia, A. , Evolving transportation exchanges, World trade,an Auction Based Transportation Marketplace, Transportation

  13. PREPARED BY: Regional Freight Data

    E-Print Network [OSTI]

    Bertini, Robert L.

    .5% Truck, ocean, rail, air Milled grain products and preparations and bakery products 3.3% Truck, rail instruments and apparatus 3.1% Truck, air Printed products 2.9% Truck, rail, air Nonmetallic mineral products for 60% of Oregon jobs · Transportation and logistics account for 20-25% of product cost · Average

  14. Strategic Freight Transportation Contract Procurement

    E-Print Network [OSTI]

    Nandiraju, Srinivas

    2006-01-01T23:59:59.000Z

    will be lowered if a follow-on load is available after doingof ?nding a follow-on load out of that destination. Securingprobability of getting a follow on load is more and remove

  15. 1.221J / 11.527J / ESD.201J Transportation Systems, Fall 2002

    E-Print Network [OSTI]

    Sussman, Joseph

    Introduces transportation as a large-scale, integrated system that interacts directly with the social, political, and economic aspects of contemporary society. Fundamental elements and issues shaping passenger and freight ...

  16. 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.

  17. Flow cytometer

    DOE Patents [OSTI]

    Van den Engh, G.

    1995-11-07T23:59:59.000Z

    A Faraday cage is described which encloses the flow chamber of a cytometer. Ground planes associated with each field deflection plate inhibit electric fields from varying the charge on designated events/droplets and further concentrates. They also increase forces applied to a passing charged event for accurate focus while concomitantly inhibiting a potential shock hazard. 4 figs.

  18. SFTEL: Flow Cell | EMSL

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

    Flow Cell EMSL's Subsurface Flow and Transport Experimental Laboratory offers several meter-scale flow cells and columns for research in saturated and unsaturated porous media....

  19. Modal shifts in short-haul passenger travel and the consequent energy impacts. [Intercity travel under 500 miles

    SciTech Connect (OSTI)

    Not Available

    1980-03-01T23:59:59.000Z

    A study was performed to evaluate the impacts of strategies to effect modal shifts in short-haul passenger travel (defined herein as intercity travel under 500 miles) from energy-intensive modes to those modes that are less energy-intensive. A series of individual strategies, ranging from incentives to the less energy-intensive modes (bus, rail) to penalties to the more energy-intensive modes (auto, air) was examined to determine energy saved and policy implications relative to strategy implementation. The most effective of the individual strategies were then combined in all permutations, and the analysis was repeated. As part of the analytical process, effects of factors other than energy (user cost and time, emissions, government subsidy, and travel fatailities) were examined in a benefit/cost analysis. Finally, energy savings, benefit/cost impacts, implementation considerations, and policy implications were evaluated to arrive at conclusions as to the effectiveness of the more-influential strategies and to the overall effectiveness of induced modal shifts. The principal conclusion of the study is that the maximum 1980 energy saving that might be realized by modal shifts, discounting the concurrent effects of demand suppression and improvement of mode efficiency, is approximately 83 x 10/sup 12/ Btu (46,500 bbl gasoline per day), 3.8% of the total projected 1980 energy consumption in the short-haul transportation sector and 0.23% of the total US petroleum use. It was also concluded that strategies to achieve these small savings by modal shifts would result in significant economic, social, and business disruptions.

  20. Bluff Body Flow Simulation Using a Vortex Element Method

    SciTech Connect (OSTI)

    Anthony Leonard; Phillippe Chatelain; Michael Rebel

    2004-09-30T23:59:59.000Z

    Heavy ground vehicles, especially those involved in long-haul freight transportation, consume a significant part of our nation's energy supply. it is therefore of utmost importance to improve their efficiency, both to reduce emissions and to decrease reliance on imported oil. At highway speeds, more than half of the power consumed by a typical semi truck goes into overcoming aerodynamic drag, a fraction which increases with speed and crosswind. Thanks to better tools and increased awareness, recent years have seen substantial aerodynamic improvements by the truck industry, such as tractor/trailer height matching, radiator area reduction, and swept fairings. However, there remains substantial room for improvement as understanding of turbulent fluid dynamics grows. The group's research effort focused on vortex particle methods, a novel approach for computational fluid dynamics (CFD). Where common CFD methods solve or model the Navier-Stokes equations on a grid which stretches from the truck surface outward, vortex particle methods solve the vorticity equation on a Lagrangian basis of smooth particles and do not require a grid. They worked to advance the state of the art in vortex particle methods, improving their ability to handle the complicated, high Reynolds number flow around heavy vehicles. Specific challenges that they have addressed include finding strategies to accurate capture vorticity generation and resultant forces at the truck wall, handling the aerodynamics of spinning bodies such as tires, application of the method to the GTS model, computation time reduction through improved integration methods, a closest point transform for particle method in complex geometrics, and work on large eddy simulation (LES) turbulence modeling.

  1. 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.

  2. Characterist Passenger Demand

    E-Print Network [OSTI]

    Minnesota, University of

    LaCrescent CityofMorris LincolnCounty RiverRiderPublicTransitSystem ClayCounty Semcac WatonwanCounty Tri-CountyActionProgram,Inc RedLakeBandofChippewaIndians HubbardCounty BeckerCountyTransit Tri-ValleyOpportunityCouncil,Inc. Mille1 #12;2 #12;3 #12;4 #12;5 #12;6 #12;7 #12;8 #12;9 #12;10 County Population Characterist ics Future

  3. Propeller Flow Meter

    E-Print Network [OSTI]

    Enciso, Juan; Santistevan, Dean; Hla, Aung K.

    2007-10-01T23:59:59.000Z

    Propeller flow meters are commonly used to measure water flow rate. They can also be used to estimate irrigation water use. This publication explains how to select, install, read and maintain propeller flow meters....

  4. 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 ...

  5. 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 ...

  6. 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.

  7. Flow Distances on Open Flow Networks

    E-Print Network [OSTI]

    Guo, Liangzhu; Shi, Peiteng; Wang, Jun; Huang, Xiaohan; Zhang, Jiang

    2015-01-01T23:59:59.000Z

    Open flow network is a weighted directed graph with a source and a sink, depicting flux distributions on networks in the steady state of an open flow system. Energetic food webs, economic input-output networks, and international trade networks, are open flow network models of energy flows between species, money or value flows between industrial sectors, and goods flows between countries, respectively. Flow distances (first-passage or total) between any given two nodes $i$ and $j$ are defined as the average number of transition steps of a random walker along the network from $i$ to $j$ under some conditions. They apparently deviate from the conventional random walk distance on a closed directed graph because they consider the openness of the flow network. Flow distances are explicitly expressed by underlying Markov matrix of a flow system in this paper. With this novel theoretical conception, we can visualize open flow networks, calculating centrality of each node, and clustering nodes into groups. We apply fl...

  8. 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.

  9. 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.

  10. 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.

  11. 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.

  12. Current Directions in Freight and Logistics Industry

    E-Print Network [OSTI]

    Minnesota, University of

    Sources: Department of Energy & ATASources: Department of Energy & ATA #12;Rural Manufacturing Plants

  13. NEMS Freight Transportation Module Improvement Study

    U.S. Energy Information Administration (EIA) Indexed Site

    basic shapes 33. Articles of base metal 41. Waste and scrap 3. Processed food 5. Meat, fish, seafood, and their preparations 6. Milled grain products and preparations, and bakery...

  14. Class 8 Truck Freight Efficiency Improvement Project

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

    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 on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE:YearRound-Up fromDepartmentTieCelebrate Earth DayFuelsDepartment of Energy ClarkClark ForkB O

  15. An analysis of international grain freight rates

    E-Print Network [OSTI]

    Jonnala, Sneha Latha

    1999-01-01T23:59:59.000Z

    and large holds arranged and structurally reinforced to carry ore, oil and light bulk cargoes. Other types include ore/oil (OO) and ore/slurry/oil (OSO). These tankers have a tight hatch provided on top of a central tank (Bernhard 1980). While adding... and suggestions for further research. CHAPTER H OVERVIEW OF OCEAN SHIPPING INDUSTRY Ocean shipping is often divided into the carriage of liquid and dry cargoes. The discussion in this chapter is mainly concentrated on ocean shipping of dry cargoes. The dry...

  16. Freight Best Practice Website | 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 on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Office of InspectorConcentrating Solar Power Basics (TheEtelligence (SmartHome

  17. 16th Annual Freight and Logistics Symposium

    E-Print Network [OSTI]

    Minnesota, University of

    performance and results, prices and demand for oil, our ability to make acquisitions on economically/7/2012 2 #12;Shale Development ­ "Boom" Shale Development Wind Energy Ethanol 2003 · Logistics and related infrastructure of greater importance in shale development, and therefore a major

  18. A New Approach to Computing Max Flows using Electrical Flows

    E-Print Network [OSTI]

    Rajamani, Sriram K.

    A New Approach to Computing Max Flows using Electrical Flows Yin Tat Lee (MIT) Satish Rao (UC-Kelner-Madry-Spielman-Teng'11]: approximate flow in time Uses electrical flows. 7 #12;Electrical Flows 3 1 S t 8 #12;Electrical Flows Identify Graph with Resistor Network R(e)=1/w(e) 1/3 S t 1 9 #12;Electrical Flows Electrical flow

  19. Low flow fume hood

    DOE Patents [OSTI]

    Bell, Geoffrey C. (Pleasant Hill, CA); Feustel, Helmut E. (Albany, CA); Dickerhoff, Darryl J. (Berkeley, CA)

    2002-01-01T23:59:59.000Z

    A fume hood is provided having an adequate level of safety while reducing the amount of air exhausted from the hood. A displacement flow fume hood works on the principal of a displacement flow which displaces the volume currently present in the hood using a push-pull system. The displacement flow includes a plurality of air supplies which provide fresh air, preferably having laminar flow, to the fume hood. The displacement flow fume hood also includes an air exhaust which pulls air from the work chamber in a minimally turbulent manner. As the displacement flow produces a substantially consistent and minimally turbulent flow in the hood, inconsistent flow patterns associated with contaminant escape from the hood are minimized. The displacement flow fume hood largely reduces the need to exhaust large amounts of air from the hood. It has been shown that exhaust air flow reductions of up to 70% are possible without a decrease in the hood's containment performance. The fume hood also includes a number of structural adaptations which facilitate consistent and minimally turbulent flow within a fume hood.

  20. 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.

  1. Productivity & Energy Flow

    E-Print Network [OSTI]

    Mitchell, Randall J.

    1 Productivity & Energy Flow Ecosystem approach, focuses: on flow of energy, water, and nutrients (capture) of energy by autotrophs Gross (total) Net (total ­ costs) Secondary productivity- capture of energy by herbivores http://sciencebitz.com/?page_id=204 What Controls the Primary Productivity

  2. Elbow mass flow meter

    DOE Patents [OSTI]

    McFarland, A.R.; Rodgers, J.C.; Ortiz, C.A.; Nelson, D.C.

    1994-08-16T23:59:59.000Z

    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. 3 figs.

  3. 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.

  4. Elliptic flow phenomenon at ATLAS

    E-Print Network [OSTI]

    Martin Spousta

    2014-06-20T23:59:59.000Z

    We summarize measurements of elliptic flow and higher order flow harmonics performed by the ATLAS experiment at the LHC. Results on event-averaged flow measurements and event-plane correlations in Pb+Pb collisions are discussed along with the event-by-event flow measurements. Further, we summarize results on flow in p+Pb collisions.

  5. Shroud leakage flow discouragers

    DOE Patents [OSTI]

    Bailey, Jeremy Clyde (Middle Grove, NY); Bunker, Ronald Scott (Niskayuna, NY)

    2002-01-01T23:59:59.000Z

    A turbine assembly includes a plurality of rotor blades comprising a root portion, an airfoil having a pressure sidewall and a suction sidewall, and a top portion having a cap. An outer shroud is concentrically disposed about said rotor blades, said shroud in combination with said tip portions defining a clearance gap. At least one circumferential shroud leakage discourager is disposed within the shroud. The leakage discourager(s) increase the flow resistance and thus reduce the flow of hot gas flow leakage for a given pressure differential across the clearance gap to improve overall turbine efficiency.

  6. Bypass Flow Study

    SciTech Connect (OSTI)

    Richard Schultz

    2011-09-01T23:59:59.000Z

    The purpose of the fluid dynamics experiments in the MIR (Matched Index of-Refraction) flow system at Idaho National Laboratory (INL) is to develop benchmark databases for the assessment of Computational Fluid Dynamics (CFD) solutions of the momentum equations, scalar mixing, and turbulence models for the flow ratios between coolant channels and bypass gaps in the interstitial regions of typical prismatic standard fuel element (SFE) or upper reflector block geometries of typical Modular High-temperature Gas-cooled Reactors (MHTGR) in the limiting case of negligible buoyancy and constant fluid properties. The experiments use Particle Image Velocimetry (PIV) to measure the velocity fields that will populate the bypass flow study database.

  7. 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.

  8. 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 ...

  9. 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 ...

  10. 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.

  11. 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

  12. 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

  13. Evaluation of flow hood measurements for residential register flows

    SciTech Connect (OSTI)

    Walker, I.S.; Wray, C.P.; Dickerhoff, D.J.; Sherman, M.H.

    2001-09-01T23:59:59.000Z

    Flow measurement at residential registers using flow hoods is becoming more common. These measurements are used to determine if the HVAC system is providing adequate comfort, appropriate flow over heat exchangers and in estimates of system energy losses. These HVAC system performance metrics are determined by using register measurements to find out if individual rooms are getting the correct airflow, and in estimates of total air handler flow and duct air leakage. The work discussed in this paper shows that commercially available flow hoods are poor at measuring flows in residential systems. There is also evidence in this and other studies that flow hoods can have significant errors even when used on the non-residential systems they were originally developed for. The measurement uncertainties arise from poor calibrations and the sensitivity of exiting flow hoods to non-uniformity of flows entering the device. The errors are usually large--on the order of 20% of measured flow, which is unacceptably high for most applications. Active flow hoods that have flow measurement devices that are insensitive to the entering airflow pattern were found to be clearly superior to commercially available flow hoods. In addition, it is clear that current calibration procedures for flow hoods may not take into account any field application problems and a new flow hood measurement standard should be developed to address this issue.

  14. 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.

  15. Electrocapturing flow cell

    DOE Patents [OSTI]

    Morozov, Victor (Manassas, VA)

    2011-04-05T23:59:59.000Z

    A flow cell for electrophoretically-assisted capturing analytes from a flow. The flow cell includes a specimen chamber, a first membrane, a second membrane, a first electrode chamber, and a second electrode chamber. The specimen chamber may have a sample inlet and a sample outlet. A first portion of the first membrane may be coupled to a first portion of the specimen chamber. A first portion of the second membrane may be coupled to a second portion of the specimen chamber. The first electrode chamber may be configured to accept a charge. A portion of the first electrode chamber may be coupled to a second portion of the first membrane. A second electrode chamber may be configured to accept an opposite charge. A portion of the second electrode chamber may be coupled to a second portion of the second membrane.

  16. Workshop on hypersonic flow

    SciTech Connect (OSTI)

    Povinelli, L.A.

    1990-01-01T23:59:59.000Z

    An overview is given of research activity on the application of computational fluid dynamics (CDF) for hypersonic propulsion systems. After the initial consideration of the highly integrated nature of air-breathing hypersonic engines and airframe, attention is directed toward computations carried out for the components of the engine. A generic inlet configuration is considered in order to demonstrate the highly three dimensional viscous flow behavior occurring within rectangular inlets. Reacting flow computations for simple jet injection as well as for more complex combustion chambers are then discussed in order to show the capability of viscous finite rate chemical reaction computer simulations. Finally, the nozzle flow fields are demonstrated, showing the existence of complex shear layers and shock structure in the exhaust plume. The general issues associated with code validation as well as the specific issue associated with the use of CFD for design are discussed. A prognosis for the success of CFD in the design of future propulsion systems is offered.

  17. robust passenger oriented airline scheduling

    E-Print Network [OSTI]

    Luis

    2010-10-29T23:59:59.000Z

    proposed services throughout the day, subject to network consideration and other ...... Environmental Engineering and the Engineering Systems, Massachusetts...

  18. Airline Passengers' Satisfaction with Airports

    E-Print Network [OSTI]

    Kim, Hyun Joo

    2012-02-14T23:59:59.000Z

    Airports are places where people have the potential to experience either satisfaction or frustration, and marketing and tourism scholars have argued that customer satisfaction is one of the primary goals of airports. However, few studies have...

  19. 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.

  20. Impact of Operational Practices on Rail Line Capacity: A Simulation Analysis

    E-Print Network [OSTI]

    Barkan, Christopher P.L.

    @illinois.edu, yclai@ntu.edu.tw, cbarkan@illinois.edu ABSTRACT Long-term demand for freight and passenger is critical for cost-effective planning of new capacity. A key aspect of this is the effect of heterogeneous conducted to evaluate the effectiveness of various operational changes to reduce delays. The trade

  1. TRAFFIC CONGESTION PRICING METHODS AND TECHNOLOGIES

    E-Print Network [OSTI]

    Boyer, Edmond

    be differentiated by time of day, road type and vehicle characteristics, and even set in real time according for passenger and freight transportation. The European UNITE project estimated the costs of traffic congestion in the UK to be 15 billion/yr. or 1.5% of GDP (Nash et al., 2003). For France and Germany the estimates were

  2. Proceedings of the 2013 Joint Rail Conference April 15-18, 2013, Knoxville, Tennessee, USA

    E-Print Network [OSTI]

    Barkan, Christopher P.L.

    American operating environment differs than the operating practices found throughout much of the rest freight and intercity passenger traffic. One of the challenges created by this operating environmentProceedings of the 2013 Joint Rail Conference JRC2013 April 15-18, 2013, Knoxville, Tennessee, USA

  3. Models for Train Scheduling Krishna C. Jha

    E-Print Network [OSTI]

    Bustamante, Fabián E.

    Models for Train Scheduling Krishna C. Jha Vice President - Research & Development krishna/analytics, and packaging into web-based map-based interfaces. Innovative Scheduling Overview #12;-3- The train schedule is one of most critical components in the passenger or freight transportations. The quality of a train

  4. By Marina Aguado Marina.aguado@ehu.es

    E-Print Network [OSTI]

    Barkan, Christopher P.L.

    in 2020 will double its share in freight and passenger markets ERRAC vision European Research Advisory train operation (golden run), optimize energy consumption (green concern) On-route information about the proximity of other trains, their route, speeds, etc.. Support for remote train approaches Visualization

  5. ENERGY FLOWS CLIMATE CHANGE

    E-Print Network [OSTI]

    Schwartz, Stephen E.

    ENERGY FLOWS FORCINGS CLIMATE CHANGE A REALLY TOUGH PROBLEM Stephen E. Schwartz, BNL, 7-20-11 www average temperature 15°C or 59°F #12;ATMOSPHERIC RADIATION Power per area Energy per time per area Unit" temperature to radiative flux. #12;GLOBAL ENERGY BALANCE Global and annual average energy fluxes in watts per

  6. 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.

  7. 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.

  8. Analysis of flow patterns and flow mechanisms in soils

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Analysis of flow patterns and flow mechanisms in soils Dissertation Co-directed by the University of paths, varying flow mechanism or changing soil physical properties (stratification). Thus, in stratified-28Jan2010 #12;This doctoral thesis was prepared at the Department of Soil Physics, University

  9. 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.

  10. 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.

  11. 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.

  12. Neutrino Factory Mercury Flow Loop

    E-Print Network [OSTI]

    McDonald, Kirk

    Neutrino Factory Mercury Flow Loop V. GravesV. Graves C. Caldwell IDS-NF Videoconference March 9, 2010 #12;Flow Loop Review · 1 cm dia nozzle, 20 m/s jet requires 1.57 liter/sec mercury flow (94 2 liter/min 24 9 gpm)mercury flow (94.2 liter/min, 24.9 gpm). · MERIT experiment showed that a pump

  13. Orifice flow measurement uncertainty

    SciTech Connect (OSTI)

    Samples, C.R.

    1984-04-01T23:59:59.000Z

    A computer program is now available from Union Carbide that evaluates the total flow uncertainty of orifice flowmeter systems. Tolerance values for every component in the system and the sensitivity of the measured flowrate to each component can be established using historical data and published hardware specifications. Knowing the tolerance and sensitivity values, a total measurement uncertainty can be estimated with a 95% confidence level. This computer program provides a powerful design tool to ensure correct component matching and total metering system optimization.

  14. 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.

  15. Numerical Investigations of Magnetohydrodynamic Hypersonic Flows.

    E-Print Network [OSTI]

    Guarendi, Andrew N

    2013-01-01T23:59:59.000Z

    ??Numerical simulations of magnetohydrodynamic (MHD) hypersonic flow are presented for both laminar and turbulent flow over a cylinder and flow entering a scramjet inlet. ANSYS (more)

  16. UZ Flow Models and Submodels

    SciTech Connect (OSTI)

    Y. Wu

    2004-11-01T23:59:59.000Z

    The purpose of this report is to document the unsaturated zone (UZ) flow models and submodels, as well as the flow fields that have been generated using the UZ flow model(s) of Yucca Mountain, Nevada. In this report, the term ''UZ model'' refers to the UZ flow model and the several submodels, which include tracer transport, temperature or ambient geothermal, pneumatic or gas flow, and geochemistry (chloride, calcite, and strontium) submodels. The term UZ flow model refers to the three-dimensional models used for calibration and simulation of UZ flow fields. This work was planned in the ''Technical Work Plan (TWP) for: Unsaturated Zone Flow Analysis and Model Report Integration'' (BSC 2004 [DIRS 169654], Section 1.2.7). The table of included Features, Events, and Processes (FEPs), Table 6.2-11, is different from the list of included FEPs assigned to this report in the ''Technical Work Plan for: Unsaturated Zone Flow Analysis and Model Report Integration'' (BSC 2004 [DIRS 169654], Table 2.1.5-1), as discussed in Section 6.2.6. The UZ model has revised, updated, and enhanced the previous UZ model (BSC 2001 [DIRS 158726]) by incorporating the repository design with new grids, recalibration of property sets, and more comprehensive validation effort. The flow fields describe fracture-fracture, matrix-matrix, and fracture-matrix liquid flow rates, and their spatial distributions as well as moisture conditions in the UZ system. These three-dimensional UZ flow fields are used directly by Total System Performance Assessment (TSPA). The model and submodels evaluate important hydrogeologic processes in the UZ as well as geochemistry and geothermal conditions. These provide the necessary framework to test hypotheses of flow and transport at different scales, and predict flow and transport behavior under a variety of climatic conditions. In addition, the limitations of the UZ model are discussed in Section 8.11.

  17. Experimental investigations and numerical modeling of a mixed flow marine waterjet

    E-Print Network [OSTI]

    Kimball, Richard Warren, 1963-

    2001-01-01T23:59:59.000Z

    Recently, waterjet propulsion has gained great commercial interest as the shipping industry trends toward faster passenger ferries and other fast transport vessels. The work presented in this thesis was part of a larger ...

  18. Fluid flow monitoring device

    DOE Patents [OSTI]

    McKay, M.D.; Sweeney, C.E.; Spangler, B.S. Jr.

    1993-11-30T23:59:59.000Z

    A flow meter and temperature measuring device are described comprising a tube with a body centered therein for restricting flow and a sleeve at the upper end of the tube to carry several channels formed longitudinally in the sleeve to the appropriate axial location where they penetrate the tube to allow pressure measurements and temperature measurements with thermocouples. The high pressure measurement is made using a channel penetrating the tube away from the body and the low pressure measurement is made at a location at the widest part of the body. An end plug seals the end of the device and holes at its upper end allow fluid to pass from the interior of the tube into a plenum. The channels are made by cutting grooves in the sleeve, the grooves widened at the surface of the sleeve and then a strip of sleeve material is welded to the grooves closing the channels. Preferably the sleeve is packed with powdered graphite before cutting the grooves and welding the strips. 7 figures.

  19. Fluid flow monitoring device

    DOE Patents [OSTI]

    McKay, Mark D. (1426 Socastee Dr., North Augusta, SC 29841); Sweeney, Chad E. (3600 Westhampton Dr., Martinez, GA 30907-3036); Spangler, Jr., B. Samuel (2715 Margate Dr., Augusta, GA 30909)

    1993-01-01T23:59:59.000Z

    A flow meter and temperature measuring device comprising a tube with a body centered therein for restricting flow and a sleeve at the upper end of the tube to carry several channels formed longitudinally in the sleeve to the appropriate axial location where they penetrate the tube to allow pressure measurements and temperature measurements with thermocouples. The high pressure measurement is made using a channel penetrating the tube away from the body and the low pressure measurement is made at a location at the widest part of the body. An end plug seals the end of the device and holes at its upper end allow fluid to pass from the interior of the tube into a plenum. The channels are made by cutting grooves in the sleeve, the grooves widened at the surface of the sleeve and then a strip of sleeve material is welded to the grooves closing the channels. Preferably the sleeve is packed with powdered graphite before cutting the grooves and welding the strips.

  20. Radial flow heat exchanger

    DOE Patents [OSTI]

    Valenzuela, Javier (Hanover, NH)

    2001-01-01T23:59:59.000Z

    A radial flow heat exchanger (20) having a plurality of first passages (24) for transporting a first fluid (25) and a plurality of second passages (26) for transporting a second fluid (27). The first and second passages are arranged in stacked, alternating relationship, are separated from one another by relatively thin plates (30) and (32), and surround a central axis (22). The thickness of the first and second passages are selected so that the first and second fluids, respectively, are transported with laminar flow through the passages. To enhance thermal energy transfer between first and second passages, the latter are arranged so each first passage is in thermal communication with an associated second passage along substantially its entire length, and vice versa with respect to the second passages. The heat exchangers may be stacked to achieve a modular heat exchange assembly (300). Certain heat exchangers in the assembly may be designed slightly differently than other heat exchangers to address changes in fluid properties during transport through the heat exchanger, so as to enhance overall thermal effectiveness of the assembly.

  1. Annular flow diverter valve

    DOE Patents [OSTI]

    Rider, Robert L. (Walkersville, MD)

    1980-01-01T23:59:59.000Z

    A valve for diverting flow from the center of two concentric tubes to the annulus between the tubes or, operating in the reverse direction, for mixing fluids from concentric tubes into a common tube and for controlling the volume ratio of said flow consists of a toroidal baffle disposed in sliding engagement with the interior of the inner tube downstream of a plurality of ports in the inner tube, a plurality of gates in sliding engagement with the interior of the inner tube attached to the baffle for movement therewith, a servomotor having a bullet-shaped plug on the downstream end thereof, and drive rods connecting the servomotor to the toroidal baffle, the servomotor thereby being adapted to move the baffle into mating engagement with the bullet-shaped plug and simultaneously move the gates away from the ports in the inner tube and to move the baffle away from the bullet-shaped plug and simultaneously move the gates to cover the ports in the inner tube.

  2. Active combustion flow modulation valve

    DOE Patents [OSTI]

    Hensel, John Peter; Black, Nathaniel; Thorton, Jimmy Dean; Vipperman, Jeffrey Stuart; Lambeth, David N; Clark, William W

    2013-09-24T23:59:59.000Z

    A flow modulation valve has a slidably translating hollow armature with at least one energizable coil wound around and fixably attached to the hollow armature. The energizable coil or coils are influenced by at least one permanent magnet surrounding the hollow armature and supported by an outer casing. Lorentz forces on the energizable coils which are translated to the hollow armature, increase or decrease the flow area to provide flow throttling action. The extent of hollow armature translation depends on the value of current supplied and the direction of translation depends on the direction of current flow. The compact nature of the flow modulation valve combined with the high forces afforded by the actuator design provide a flow modulation valve which is highly responsive to high-rate input control signals.

  3. Differential probes aid flow measurement

    SciTech Connect (OSTI)

    Mesnard, D.R.

    1982-07-01T23:59:59.000Z

    Nonconstricting differential pressure flow probes which help solve the problems of clogging, wear, and pressure loss at the Seawater Filtration Facility in Saudi Arabia are described. Treated seawater is pumped into oil-bearing formations for secondary recovery. Figures showing principle of operation for probes, installation schematic and long-term accuracy results (flow probes vs. orifice meters) are presented. The new diamond-shaped design flow sensor offers accurate flow measurement with low permanent pressure loss, which translates into cost savings for the operator.

  4. Section 11: Interfacial flows 1 Section 11: Interfacial flows

    E-Print Network [OSTI]

    Kohlenbach, Ulrich

    Abstract 15:10 ­ 15:30: Martin Lübke, Olaf Wünsch (Universität Kassel): Two-Phase Flow in Single- Screw Extruders Abstract S11.4: Capillary Flows Wed, 16:00­18:00 Chair: Dieter Bothe S1|03­123 16:00 ­ 16:20: K

  5. Analysis of flow patterns and flow mechanisms in soils

    E-Print Network [OSTI]

    Avignon et des Pays de Vaucluse, Université de

    Analysis of flow patterns and flow mechanisms in soils Dissertation Co-directed by the University mechanism or changing soil physical properties (stratification). Thus, in stratified soil, we restricted was prepared at the Department of Soil Physics, University of Bayreuth, and at the Hydrogeological Laboratory

  6. Effect of flow fluctuations and nonflow on elliptic flow methods

    SciTech Connect (OSTI)

    Ollitrault, Jean-Yves; Poskanzer, Arthur M.; Voloshin, Sergei A.

    2009-04-16T23:59:59.000Z

    We discuss how the different estimates of elliptic flow are influenced by flow fluctuations and nonflow effects. It is explained why the event-plane method yields estimates between the two-particle correlation methods and the multiparticle correlation methods. It is argued that nonflow effects and fluctuations cannot be disentangled without other assumptions. However, we provide equations where, with reasonable assumptions about fluctuations and nonflow, all measured values of elliptic flow converge to a unique mean v_2,PP elliptic flow in the participant plane and, with a Gaussian assumption on eccentricity fluctuations, can be converted to the mean v_2,RP in the reaction plane. Thus, the 20percent spread in observed elliptic flow measurements from different analysis methods is no longer mysterious.

  7. Network Flow Optimization under Uncertainty

    E-Print Network [OSTI]

    Tesfatsion, Leigh

    Network model in words Minimize the cost of satisfying demands for electric energy By: imports, exports and electricity Subject to: conservation of energy flows (net after losses), lower and upper bounds on flows is a reactive approach: how would the optimal solution have changed if I'd only known? · Proactive approaches

  8. Redox Flow Batteries, a Review

    SciTech Connect (OSTI)

    U. Tennessee Knoxville; U. Texas Austin; McGill U; Weber, Adam Z.; Mench, Matthew M.; Meyers, Jeremy P.; Ross, Philip N.; Gostick, Jeffrey T.; Liu, Qinghua

    2011-07-15T23:59:59.000Z

    Redox flow batteries are enjoying a renaissance due to their ability to store large amounts of electrical energy relatively cheaply and efficiently. In this review, we examine the components of redox flow batteries with a focus on understanding the underlying physical processes. The various transport and kinetic phenomena are discussed along with the most common redox couples.

  9. 2014 Texas FreighT Leadership summiT | Linking Freight Transportation and Economic Competitiveness Linking Freight Transportation and Economic Competitiveness

    E-Print Network [OSTI]

    and Welcome Marc D. Williams, Director of Planning, Texas Department of Transportation Jeff Moseley International 3:30­3:45Pm closing Remarks Marc D. Williams, Texas Department of Transportation AGENDA WEDNESDAy

  10. Vertical flow chemical detection portal

    DOE Patents [OSTI]

    Linker, K.L.; Hannum, D.W.; Conrad, F.J.

    1999-06-22T23:59:59.000Z

    A portal apparatus is described for screening objects or persons for the presence of trace amounts of chemical substances such as illicit drugs or explosives. The apparatus has a test space, in which a person may stand, defined by two generally upright sides spanned by a horizontal transom. One or more fans in the transom generate a downward air flow (uni-directional) within the test space. The air flows downwardly from a high pressure upper zone, past the object or person to be screened. Air moving past the object dislodges from the surface thereof both volatile and nonvolatile particles of the target substance. The particles are entrained into the air flow which continues flowing downward to a lower zone of reduced pressure, where the particle-bearing air stream is directed out of the test space and toward preconcentrator and detection components. The sides of the portal are specially configured to partially contain and maintain the air flow. 3 figs.

  11. Wavy flow cooling concept for turbine airfoils

    DOE Patents [OSTI]

    Liang, George (Palm City, FL)

    2010-08-31T23:59:59.000Z

    An airfoil including an outer wall and a cooling cavity formed therein. The cooling cavity includes a leading edge flow channel located adjacent a leading edge of the airfoil and a trailing edge flow channel located adjacent a trailing edge of the airfoil. Each of the leading edge and trailing edge flow channels define respective first and second flow axes located between pressure and suction sides of the airfoil. A plurality of rib members are located within each of the flow channels, spaced along the flow axes, and alternately extending from opposing sides of the flow channels to define undulating flow paths through the flow channels.

  12. Turbine blade tip flow discouragers

    DOE Patents [OSTI]

    Bunker, Ronald Scott (Niskayuna, NY)

    2000-01-01T23:59:59.000Z

    A turbine assembly comprises a plurality of rotating blade portions in a spaced relation with a stationery shroud. The rotating blade portions comprise a root section, a tip portion and an airfoil. The tip portion has a pressure side wall and a suction side wall. A number of flow discouragers are disposed on the blade tip portion. In one embodiment, the flow discouragers extend circumferentially from the pressure side wall to the suction side wall so as to be aligned generally parallel to the direction of rotation. In an alternative embodiment, the flow discouragers extend circumferentially from the pressure side wall to the suction side wall so as to be aligned at an angle in the range between about 0.degree. to about 60.degree. with respect to a reference axis aligned generally parallel to the direction of rotation. The flow discouragers increase the flow resistance and thus reduce the flow of hot gas flow leakage for a given pressure differential across the blade tip portion so as to improve overall turbine efficiency.

  13. Multiscale Simulations for Polymeric Flow

    E-Print Network [OSTI]

    Takahiro Murashima; Takashi Taniguchi; Ryoichi Yamamoto; Shugo Yasuda

    2011-01-06T23:59:59.000Z

    Multiscale simulation methods have been developed based on the local stress sampling strategy and applied to three flow problems with different difficulty levels: (a) general flow problems of simple fluids, (b) parallel (one-dimensional) flow problems of polymeric liquids, and (c) general (two- or three-dimensional) flow problems of polymeric liquids. In our multiscale methods, the local stress of each fluid element is calculated directly by performing microscopic or mesoscopic simulations according to the local flow quantities instead of using any constitutive relations. For simple fluids (a), such as the Lenard-Jones liquid, a multiscale method combining MD and CFD simulations is developed based on the local equilibrium assumption without memories of the flow history. (b), the multiscale method is extended to take into account the memory effects that arise in hydrodynamic stress due to the slow relaxation of polymer-chain conformations. The memory of polymer dynamics on each fluid element is thus resolved by performing MD simulations in which cells are fixed at the mesh nodes of the CFD simulations.For general (two- or three-dimensional) flow problems of polymeric liquids (c), it is necessary to trace the history of microscopic information such as polymer-chain conformation, which carries the memories of past flow history, along the streamline of each fluid element. A Lagrangian-based CFD is thus implemented to correctly advect the polymer-chain conformation consistently with the flow. On each fluid element, coarse-grained polymer simulations are carried out to consider the dynamics of entangled polymer chains that show extremely slow relaxation compared to microscopic time scales.

  14. The transition from two phase bubble flow to slug flow

    E-Print Network [OSTI]

    Radovcich, Nick A.

    1962-01-01T23:59:59.000Z

    The process of transition from bubble to slug flow in a vertical pipe has been studied analytically and experimentally. An equation is presented which gives the agglomeration time as a function of void fraction, channel ...

  15. Flow distribution channels to control flow in process channels

    DOE Patents [OSTI]

    Tonkovich, Anna Lee; Arora, Ravi; Kilanowski, David

    2014-10-28T23:59:59.000Z

    The invention describes features that can be used to control flow to an array of microchannels. The invention also describes methods in which a process stream is distributed to plural microchannels.

  16. Gas flow characterization of restrictive flow orifice devices

    SciTech Connect (OSTI)

    Shrouf, R.G. [Sandia National Labs., Albuquerque, NM (United States). Safety Engineering Dept.; Page, S.R. [Albuquerque Valve and Fitting Co., NM (United States)

    1997-07-01T23:59:59.000Z

    A restrictive flow orifice (RFO) can be used to limit the uncontrolled release of system media upon component or line failure in a gas handling system and can thereby enhance the system safety. This report describes a new RFO product available from the Swagelok Companies and specifies the gas flow characteristics of this device. A family of four different sizes of RFO devices is documented.

  17. Insertable fluid flow passage bridgepiece and method

    DOE Patents [OSTI]

    Jones, Daniel O. (Glenville, NV)

    2000-01-01T23:59:59.000Z

    A fluid flow passage bridgepiece for insertion into an open-face fluid flow channel of a fluid flow plate is provided. The bridgepiece provides a sealed passage from a columnar fluid flow manifold to the flow channel, thereby preventing undesirable leakage into and out of the columnar fluid flow manifold. When deployed in the various fluid flow plates that are used in a Proton Exchange Membrane (PEM) fuel cell, bridgepieces of this invention prevent mixing of reactant gases, leakage of coolant or humidification water, and occlusion of the fluid flow channel by gasket material. The invention also provides a fluid flow plate assembly including an insertable bridgepiece, a fluid flow plate adapted for use with an insertable bridgepiece, and a method of manufacturing a fluid flow plate with an insertable fluid flow passage bridgepiece.

  18. Capillary flows in flexible structures

    E-Print Network [OSTI]

    Hoberg, Theresa B. (Theresa Blinn)

    2013-01-01T23:59:59.000Z

    Interactions between capillary and elastic effects are relevant to a variety of applications, from micro- and nano-scale manufacturing to biological systems. In this thesis, we investigate capillary flows in extremely ...

  19. 2007 Estimated International Energy Flows

    SciTech Connect (OSTI)

    Smith, C A; Belles, R D; Simon, A J

    2011-03-10T23:59:59.000Z

    An energy flow chart or 'atlas' for 136 countries has been constructed from data maintained by the International Energy Agency (IEA) and estimates of energy use patterns for the year 2007. Approximately 490 exajoules (460 quadrillion BTU) of primary energy are used in aggregate by these countries each year. While the basic structure of the energy system is consistent from country to country, patterns of resource use and consumption vary. Energy can be visualized as it flows from resources (i.e. coal, petroleum, natural gas) through transformations such as electricity generation to end uses (i.e. residential, commercial, industrial, transportation). These flow patterns are visualized in this atlas of 136 country-level energy flow charts.

  20. particle flow for nonlinear filters

    E-Print Network [OSTI]

    Dobigeon, Nicolas

    particle flow for nonlinear filters Fred Daum 19 June 2012 Copyright © 2012 Raytheon Company. All rights reserved. Customer Success Is Our Mission is a trademark of Raytheon Company. 1 #12;discrete time

  1. Fluid Flow Modeling in Fractures

    E-Print Network [OSTI]

    Sarkar, Sudipta

    2004-01-01T23:59:59.000Z

    In this paper we study fluid flow in fractures using numerical simulation and address the challenging issue of hydraulic property characterization in fractures. The methodology is based on Computational Fluid Dynamics, ...

  2. Mechanical design of flow batteries

    E-Print Network [OSTI]

    Hopkins, Brandon J. (Brandon James)

    2013-01-01T23:59:59.000Z

    The purpose of this research is to investigate the design of low-cost, high-efficiency flow batteries. Researchers are searching for next-generation battery materials, and this thesis presents a systems analysis encompassing ...

  3. Field Flows of Dark Energy

    E-Print Network [OSTI]

    Cahn, Robert N.

    2010-01-01T23:59:59.000Z

    Field Flows of Dark Energy Robert N. Cahn, Roland de Putter,July 8, 2008) Scalar ?eld dark energy evolving from a longthe key aspects of the dark energy evolution during much of

  4. Longitudinal dispersion in vegetated flow

    E-Print Network [OSTI]

    Murphy, Enda

    2006-01-01T23:59:59.000Z

    Vegetation is ubiquitous in rivers, estuaries and wetlands, strongly influencing both water conveyance and mass transport. The plant canopy affects both mean and turbulent flow structure, and thus both advection and ...

  5. Pipe Flow System Holly Guest

    E-Print Network [OSTI]

    Clement, Prabhakar

    numbers #12;Pipe Flow System Form #12;Components Form Fitting Loss Coefficient, k Globe valve, fully open 10 Angle valve, fully open 5 Swing check valve, fully open 2.5 Gate valve, fully open .2 Shortradius

  6. Multiscale modeling in granular flow

    E-Print Network [OSTI]

    Rycroft, Christopher Harley

    2007-01-01T23:59:59.000Z

    Granular materials are common in everyday experience, but have long-resisted a complete theoretical description. Here, we consider the regime of slow, dense granular flow, for which there is no general model, representing ...

  7. Subcooled flow boiling of fluorocarbons

    E-Print Network [OSTI]

    Murphy, Richard Walter

    1971-01-01T23:59:59.000Z

    A study was conducted of heat transfer and hydrodynamic behavior for subcooled flow boiling of Freon-113, one of a group of fluorocarbons suitable for use in cooling of high-power-density electronic components. Problems ...

  8. Minimum Stream Flow Standards (Connecticut)

    Broader source: Energy.gov [DOE]

    These regulations apply to all dams and structures which impound or divert waters on rivers or their tributaries, with some exceptions. The regulations set standards for minimum flow (listed in the...

  9. Automation of radiochemical analysis by applying flow

    E-Print Network [OSTI]

    Snchez, David

    of detection systems, including scintillation counting, a-spectrometers, proportional counters, mass spectrometry and spectrophotometry. 2010 Published by Elsevier Ltd. Keywords: Flow-analysis technique; Flow

  10. MODERN DEVELOPMENTS IN MULTIPHASE FLOW & HEAT TRANSFER

    E-Print Network [OSTI]

    Lahey, Richard T.

    MODERN DEVELOPMENTS IN MULTIPHASE FLOW & HEAT TRANSFER "ENGINEERING APPLICATIONS OF FRACTAL and multiphase flow & heat transfer will be stressed. This paper will begin by reviewing some important concepts

  11. Colorado: Isothermal Battery Calorimeter Quantifies Heat Flow...

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

    Isothermal Battery Calorimeter Quantifies Heat Flow, Helps Make Safer, Longer-lasting Batteries Colorado: Isothermal Battery Calorimeter Quantifies Heat Flow, Helps Make Safer,...

  12. Equidistribution results for geodesic flows

    E-Print Network [OSTI]

    Abdelhamid Amroun

    2011-09-15T23:59:59.000Z

    Using the works of Ma\\~n\\'e \\cite{Ma} and Paternain \\cite{Pat} we study the distribution of geodesic arcs with respect to equilibrium states of the geodesic flow on a closed manifold, equipped with a $\\mathcal{C}^{\\infty}$ Riemannian metric. We prove large deviations lower and upper bounds and a contraction principle for the geodesic flow in the space of probability measures of the unit tangent bundle. We deduce a way of approximating equilibrium states for continuous potentials.

  13. Subcritical dynamos in shear flows

    E-Print Network [OSTI]

    F. Rincon; G. I. Ogilvie; M. R. E. Proctor; C. Cossu

    2008-05-09T23:59:59.000Z

    Identifying generic physical mechanisms responsible for the generation of magnetic fields and turbulence in differentially rotating flows is fundamental to understand the dynamics of astrophysical objects such as accretion disks and stars. In this paper, we discuss the concept of subcritical dynamo action and its hydrodynamic analogue exemplified by the process of nonlinear transition to turbulence in non-rotating wall-bounded shear flows. To illustrate this idea, we describe some recent results on nonlinear hydrodynamic transition to turbulence and nonlinear dynamo action in rotating shear flows pertaining to the problem of turbulent angular momentum transport in accretion disks. We argue that this concept is very generic and should be applicable to many astrophysical problems involving a shear flow and non-axisymmetric instabilities of shear-induced axisymmetric toroidal velocity or magnetic fields, such as Kelvin-Helmholtz, magnetorotational, Tayler or global magnetoshear instabilities. In the light of several recent numerical results, we finally suggest that, similarly to a standard linear instability, subcritical MHD dynamo processes in high-Reynolds number shear flows could act as a large-scale driving mechanism of turbulent flows that would in turn generate an independent small-scale dynamo.

  14. Pressure and flow characteristics of restrictive flow orifice devices.

    SciTech Connect (OSTI)

    Shrouf, Roger D.

    2003-06-01T23:59:59.000Z

    A Restrictive Flow Orifice (RFO) can be used to enhance the safe design of a pressure system in several ways. Pressure systems frequently incorporate a regulator and relief valve to protect the downstream equipment from accidental overpressure caused by regulator failure. Analysis frequently shows that in cases of high-flow regulator failure, the downstream pressure may rise significantly above the set pressure of the relief valve. This is due to limited flow capacity of the relief valve. A different regulator or relief valve may need to be selected. A more economical solution to this problem is to use an RFO to limit the maximum system flow to acceptable limits within the flow capacity of the relief valve, thereby enhancing the overpressure protection of laboratory equipment. An RFO can also be used to limit the uncontrolled release of system fluid (gas or liquid) upon component or line failure. As an example, potential asphyxiation hazards resultant from the release of large volumes of inert gas from a 'house' nitrogen system can be controlled by the use of an RFO. This report describes a versatile new Sandia-designed RFO available from the Swagelok Company and specifies the gas flow characteristics of this device. Two sizes, 0.010 and 0.020 inch diameter RFOs are available. These sizes will allow enhanced safety for many common applications. This new RFO design are now commercially available and provide advantages over existing RFOs: a high pressure rating (6600 psig); flow through the RFO is equal for either forward or reverse directions; they minimize the potential for leakage by incorporating the highest quality threaded connections; and can enhance the safety of pressure systems.

  15. Stochastic models for turbulent reacting flows

    SciTech Connect (OSTI)

    Kerstein, A. [Sandia National Laboratories, Livermore, CA (United States)

    1993-12-01T23:59:59.000Z

    The goal of this program is to develop and apply stochastic models of various processes occurring within turbulent reacting flows in order to identify the fundamental mechanisms governing these flows, to support experimental studies of these flows, and to further the development of comprehensive turbulent reacting flow models.

  16. Flow Duration Curve Load Duration Curve

    E-Print Network [OSTI]

    Flow Duration Curve Load Duration Curve 1. Develop Flow Duration Curve 2. Estimate load given flow and concentration data--select appropriate conversion factors 3. Develop Load Duration Curve 4. Plot observed data with Load Duration Curve What are they? How do you make one? Describes the percent of time a flow rate

  17. SHORT-TUBE SUBCRITICAL FLOW Enerag Division

    E-Print Network [OSTI]

    Oak Ridge National Laboratory

    #12;SHORT-TUBE SUBCRITICAL FLOW Y. C. Mei Enerag Division Oak Ridge National Laboratory Oak Ridge-tube subcritical flow. For short tubes used as refrigerant expansion devices, the orifice model is found inadequate-TUBE SUBCRITICAL FLOW INTRODUCTION Much theoretical and experimental work regarding short tube fluid flow has

  18. Mach flow angularity probes for scramjet engine flow path diagnostics

    SciTech Connect (OSTI)

    Jalbert, P.A.; Hiers, R.S. Jr. [Sverdrup Technology, Inc., Arnold AFS, TN (United States)

    1993-12-31T23:59:59.000Z

    Mach-flow angularity (MFA) probes were developed for use in scramjet flow path probe rakes. Prototype probes were fabricated to demonstrate the assembly processes (numerical control machining, furnace brazing, and electron beam welding). Tests of prototype probes confirmed the thermal durability margins and life cycle. Selected probes were calibrated in air at Mach numbers from 1.75 to 6.0. Acceptance criteria for the production probes stressed thermal durability and pressure (and, consequently, Mach number) measurement quality. This new water-cooled MFA probe has 0.397-cm shaft diameter and is capable of withstanding heat fluxes of 2.724 kW/sq cm.

  19. Sustainability in Ocean Freight Richard Cox, Branch Manager

    E-Print Network [OSTI]

    Minnesota, University of

    compliance with ISO 9001 Quality and ISO 14001 Environmental Standards #12;16/12/2010Corporate Communications

  20. Investigating the Possibility of Using BART for Air Freight Movement

    E-Print Network [OSTI]

    Lu, Xiao-Yun; Hanson, Matt; Graham, Michael; Nishinaga, Eugene; Lu, Richard

    2008-01-01T23:59:59.000Z

    generally at night; Long-haul truck fleets are used forgenerally at night; (4) Long-haul truck fleets are used forand deliveries; Trucks are used for long distance haul. Each

  1. Freight/logistics symposium .2 TRB conference ......................3

    E-Print Network [OSTI]

    Minnesota, University of

    these fuels' carbon intensity, measured across the full fuel cycle: feedstock extraction, production Carbon continued on page 3 University to study low-carbon fuel standard A University team that includes of the Department of Commerce) to investigate the economic and environmental implications of instituting a low-carbon

  2. CTS Freight and Logistics Symposium Minneapolis, MN November 30, 2007

    E-Print Network [OSTI]

    Minnesota, University of

    % change 2000-2020 62% 44% 39% 181% 57% 10,700 17,296 2,009 2,891 1,054 1,470 13,772 21,682 9 25 Source Minerals2 14,446,158Farm Products1 TonnageCommodity Category Source: 2001 TRANSEARCH Data #12;Corn Yield(Bu) Sibley Cottonwood Jackson Nobles Rock Blue Earth Brown Faribault Le Sueur Martin Nicollet Waseca Watonwan

  3. Appendix C: Regional Economic Freight Profiles Table of Contents

    E-Print Network [OSTI]

    Texas at Austin, University of

    , and a number of turbine engineering offices taking root in city business parks. One of the largest wind power 735 megawatts (MW) of electricity and helped Texas overtake California in total installed wind power capacity. The wind plant consists of 291 1.5- MW wind turbines from General Electric and 130 2.3-MW wind

  4. GROUND PROTOCOLS: A (LECHMERE) USER MANUAL top: Freight Train Schedule

    E-Print Network [OSTI]

    Herr, Hugh

    had a civic dimension as well. It is a place of daily commutes, specific MBTA operations, and a whole

  5. Inbound freight consolidation for US manufacturers at China

    E-Print Network [OSTI]

    Fang, Yi, M. Eng. Massachusetts Institute of Technology

    2006-01-01T23:59:59.000Z

    In recent years, China has become the world factory for a sizable portion of products. Most manufacturing conglomerates in the United States now have contract manufacturing plants in China. Because many of these US companies ...

  6. air freight sector: Topics by E-print Network

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

    cities in Europe. Although recent studies have considered sea-air intermodality as a locational advantage for ports and coastal urban centres, they are still few and isolated case...

  7. air freight forwarders: Topics by E-print Network

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

    parameters in the elastic net Chen, Sheng 186 Efficient Forward Regression with Marginal Likelihood Computer Technologies and Information Sciences Websites Summary: propose...

  8. Supertruck technologies for 55% thermal efficiency and 68% freight...

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

    On Program Partners Cummins Inc. - Cummins Fuel Systems - Cummins Electronics - Cummins Turbo Technologies - Cummins Emissions Solutions - Cummins Filtration - Modine - VanDyne...

  9. Measuring the Value of Time in Highway Freight Transportation

    E-Print Network [OSTI]

    Miao, Qing

    2014-01-13T23:59:59.000Z

    ) .............................. 37 Table 4.4: Value of Time for Ubiquitous Congestion (80% Known Demand) ............... 37 Table 5.1: Logistic Operation Data by Industry Type...................................................... 53 Table 5.2: Single-Vehicle Value of Time... transportation cost, which 4 has been escalating over the years. For example, between 1981 and 2002, transportation costs increased from $228 billion to $577 billion, which corresponds to 45.1 percent and 63.4 percent of the total logistics cost...

  10. The Diversification Effects on the Freight Forwarding Industry

    E-Print Network [OSTI]

    Greer, Britney 1990-

    2011-11-14T23:59:59.000Z

    . v NOMENCLATURE NVOCC Non-Vessel Operating/Owning Common Carrier CHB Custom House Brokerage 3PL Third Party Logistics vi TABLE OF CONTENTS Page ABSTRACT... in transportation, ?entities that provide third party supply chain logistics services to achieve the desired goal of timely, safe and compliant delivery of the shipper?s goods through the international supply chain at the lowest practical cost,? are a necessity...

  11. SuperTruck Team Achieves 115% Freight Efficiency Improvement...

    Energy Savers [EERE]

    per gallon (MPG). Increasing the efficiency of Class 8 trucks is essential because they haul 80 percent of the goods in the U.S. and use about 20 percent of the fuel consumed in...

  12. Class 8 Truck Freight Efficiency Improvement Project | Department of Energy

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

    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 on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE:YearRound-Up fromDepartmentTieCelebrate Earth DayFuelsDepartment of Energy ClarkClark ForkB O2

  13. Class 8 Truck Freight Efficiency Improvement Project | Department of Energy

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

    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 on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE:YearRound-Up fromDepartmentTieCelebrate Earth DayFuelsDepartment of Energy ClarkClark ForkB O21

  14. Class 8 Truck Freight Efficiency Improvement Project | Department of Energy

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

    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 on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE:YearRound-Up fromDepartmentTieCelebrate Earth DayFuelsDepartment of Energy ClarkClark ForkB

  15. Vehicle Technologies Office Merit Review 2014: Class 8 Truck Freight

    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:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) "of EnergyEnergyENERGYWomen Owned SmallOf The 2012Nuclear Guide Remote55 JeffersonFuel-Efficient

  16. Super Truck -- 50% Improvement In Class 8 Freight Efficiency | Department

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

    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 on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious RankCombustion |Energy Usage »of Energy Strain Rate4 RecoveryJulyEvaluationOffi ce U.S.Super Dutyof

  17. Supertruck technologies for 55% thermal efficiency and 68% freight

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

    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 on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious RankCombustion |Energy Usage »of Energy Strain Rate4Superhard Coating Systems

  18. NEMS Freight Transportation Module Improvement Study - Energy Information

    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:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Opticalhttp://www.fnal.gov/directorate/nalcal/nalcal02_07_05_files/nalcal.gif Directorate - EventsNEET Benefits

  19. Mirrored serpentine flow channels for fuel cell

    DOE Patents [OSTI]

    Rock, Jeffrey Allan (Rochester, NY)

    2000-08-08T23:59:59.000Z

    A PEM fuel cell having serpentine flow field channels wherein the input/inlet legs of each channel border the input/inlet legs of the next adjacent channels in the same flow field, and the output/exit legs of each channel border the output/exit legs of the next adjacent channels in the same flow field. The serpentine fuel flow channels may be longer, and may contain more medial legs, than the serpentine oxidant flow channels.

  20. Pressure compensated flow control valve

    DOE Patents [OSTI]

    Minteer, Daniel J. (West Richland, WA)

    1999-01-01T23:59:59.000Z

    The invention is an air flow control valve which is capable of maintaining a constant flow at the outlet despite changes in the inlet or outlet pressure. The device consists of a shell assembly with an inlet chamber and outlet chamber separated by a separation plate. The chambers are connected by an orifice. Also located within the inlet chamber is a port controller assembly. The port controller assembly consists of a differential pressure plate and port cap affixed thereon. The cap is able to slide in and out of the orifice separating the inlet and outlet chambers. When the pressure differential is sufficient, the differential pressure plate rises or falls to maintain a constant air flow. Movement of the port controller assembly does not require the use of seals, diaphragms, tight tolerances, bushings, bearings, hinges, guides, or lubricants.

  1. Connectivity due to preferential flow controls water flow and solute transport at the hillslope scale

    E-Print Network [OSTI]

    Weiler, Markus

    feedback, flow through the fractured bedrock, kinematic wave routing and flow through discrete preferentialConnectivity due to preferential flow controls water flow and solute transport at the hillslope the major controls on water flow and solute transport at the hillslope scale remains a major topic

  2. Rheo-optical determination of flow birefringence and flow dichroism with the pulsed laser method

    E-Print Network [OSTI]

    Rheo-optical determination of flow birefringence and flow dichroism with the pulsed laser method online 29 August 2006 Rheo-optical measurements of the flow birefringence, flow dichroism systems under flow. However, the standard setup of an optical train, using phase modulation for the rheo-optical

  3. Interfacial flows in corrugated microchannels: flow regimes, transitions and hysteresis

    E-Print Network [OSTI]

    Feng, James J.

    , 1266-1276 (2011), doi:10.1016/j.ijmultiphaseflow.2011.08.003 #12;model, microfluidics, porous media 1 of displacing oil by water in enhanced oil recovery (Marle, 1981; Lenormand et al., 1988). More recently on hy- drodynamic principles and concrete flow mechanisms. In fact, conflicting assumptions have been

  4. Nuclear reactor downcomer flow deflector

    DOE Patents [OSTI]

    Gilmore, Charles B. (Greensburg, PA); Altman, David A. (Pittsburgh, PA); Singleton, Norman R. (Murrysville, PA)

    2011-02-15T23:59:59.000Z

    A nuclear reactor having a coolant flow deflector secured to a reactor core barrel in line with a coolant inlet nozzle. The flow deflector redirects incoming coolant down an annulus between the core barrel and the reactor vessel. The deflector has a main body with a front side facing the fluid inlet nozzle and a rear side facing the core barrel. The rear side of the main body has at least one protrusion secured to the core barrel so that a gap exists between the rear side of the main body adjacent the protrusion and the core barrel. Preferably, the protrusion is a relief that circumscribes the rear side of the main body.

  5. High gas flow alpha detector

    DOE Patents [OSTI]

    Bolton, R.D.; Bounds, J.A.; Rawool-Sullivan, M.W.

    1996-05-07T23:59:59.000Z

    An alpha detector for application in areas of high velocity gas flows, such as smokestacks and air vents. A plurality of spaced apart signal collectors are placed inside an enclosure, which would include smokestacks and air vents, in sufficient numbers to substantially span said enclosure so that gas ions generated within the gas flow are electrostatically captured by the signal collector means. Electrometer means and a voltage source are connected to the signal collectors to generate an electrical field between adjacent signal collectors, and to indicate a current produced through collection of the gas ions by the signal collectors. 4 figs.

  6. High gas flow alpha detector

    DOE Patents [OSTI]

    Bolton, Richard D. (Los Alamos, NM); Bounds, John A. (Los Alamos, NM); Rawool-Sullivan, Mohini W. (Los Alamos, NM)

    1996-01-01T23:59:59.000Z

    An alpha detector for application in areas of high velocity gas flows, such as smokestacks and air vents. A plurality of spaced apart signal collectors are placed inside an enclosure, which would include smokestacks and air vents, in sufficient numbers to substantially span said enclosure so that gas ions generated within the gas flow are electrostatically captured by the signal collector means. Electrometer means and a voltage source are connected to the signal collectors to generate an electrical field between adjacent signal collectors, and to indicate a current produced through collection of the gas ions by the signal collectors.

  7. Non-Newtonian fluid flow

    E-Print Network [OSTI]

    Osinski, Charles Anthony

    1963-01-01T23:59:59.000Z

    zero and unity. The Ostwald- de Waele Equation (4), commonly known as the power law, is sometimes used to describe fluid behavior of this type. The rheological equation is (4) where the parameters "k" and "n" are constant for a particular fluid... be extended to include Reynolds numbers and the type of flow determined to be laminar and/or turbulent. It is assumed that the transition from laminar to turbulent flow occurs at a Reynolds number of 2100, the numeric distribution of Reynolds numbers...

  8. Dynamo action in flows with

    E-Print Network [OSTI]

    Li, Yi

    Dynamo action in flows with cat's eyes A l i c e C o u r v o i s i e r A n d r e w G i l b e r t Y of k for R = 500 and the flow (2.4) and (2.5). nts k = 2.5 and k = 5 are highlighted. Magnetic field). In (a) k = 2.5 and we have 0.5 max Bz (with max Bz 0.6 max |B|), and in (b) k = 5 and the levels .65 max

  9. The Potential for Using Transit Infrastructure for Air Freight Cargo Movement: Feasibility Analysis of Freight Train Operation Logistics, Phase II

    E-Print Network [OSTI]

    Lu, Xiao-Yun

    2015-01-01T23:59:59.000Z

    Energy Resource Electricity Renewable Resource Fossil Fuels energy resources are renewable, which. This is important14]. The percentage of renewable energy is increasing for

  10. Data Flow Testing Neelam Gupta

    E-Print Network [OSTI]

    Gupta, Rajiv

    Data Flow Testing Neelam Gupta The University of Arizona, Tucson, Arizona and Rajiv Gupta The University of Arizona, Tucson, Arizona Software testing techniques are designed to execute a program on a set of test cases that provide su?cient coverage under some speci#12;c well-de#12;ned test coverage criterion

  11. Rinse trough with improved flow

    DOE Patents [OSTI]

    O`Hern, T.J.; Grasser, T.W.

    1998-08-11T23:59:59.000Z

    Novel rinse troughs accomplish thorough uniform rinsing. The troughs are suitable for one or more essentially planar objects having substantially the same shape. The troughs ensure that each surface is rinsed uniformly. The new troughs provide uniform rinse fluid flow over the objects` surfaces to accomplish a more thorough rinse than prior art troughs. 5 figs.

  12. Comments on "Microscale flow visualization"

    E-Print Network [OSTI]

    A. Kwang-Hua Chu

    2005-10-22T23:59:59.000Z

    We make comments on the presentation of Sinton's paper (Microfluidics and Nanofluidics {\\bf 1}: 2, 2004) about the microscale flow visualization since the effects of the roughness along the microfabricated wall upon the current macroflow visualization methods could be significant and cannot be neglected in microdomain and even nanodomain.

  13. Superconducting flux flow digital circuits

    DOE Patents [OSTI]

    Hietala, V.M.; Martens, J.S.; Zipperian, T.E.

    1995-02-14T23:59:59.000Z

    A NOR/inverter logic gate circuit and a flip flop circuit implemented with superconducting flux flow transistors (SFFTs) are disclosed. Both circuits comprise two SFFTs with feedback lines. They have extremely low power dissipation, very high switching speeds, and the ability to interface between Josephson junction superconductor circuits and conventional microelectronics. 8 figs.

  14. Superconducting flux flow digital circuits

    DOE Patents [OSTI]

    Hietala, Vincent M. (Placitas, NM); Martens, Jon S. (Sunnyvale, CA); Zipperian, Thomas E. (Albuquerque, NM)

    1995-01-01T23:59:59.000Z

    A NOR/inverter logic gate circuit and a flip flop circuit implemented with superconducting flux flow transistors (SFFTs). Both circuits comprise two SFFTs with feedback lines. They have extremely low power dissipation, very high switching speeds, and the ability to interface between Josephson junction superconductor circuits and conventional microelectronics.

  15. Flow preconditioner for electrostatic precipitator

    SciTech Connect (OSTI)

    Honacker, H.; Drlik, R.J.

    1980-01-01T23:59:59.000Z

    A flow preconditioner for an electrostatic precipitator removes particulate matter from a stream of polluted gas immediately after it passes through a tangential inlet at the lower end of a vertical cylindrical housing and straightens and divides the stream into laminations parallel to the axis of the housing. It comprises an annular ledge or choke ring extending inwardly from said housing above the inlet and an assembly of vanes above said ledge extending radially from the axis of the housing and angularly spaced apart. Each of said vanes has a flow receiving edge directed toward said inlet, a curved portion extending upwardly and away from said inlet, and a flat portion extending upwardly from said curved portion in a plane parallel to the housing axis. The curved portion of each vane defines a trough having a camber which gradually decreases along its span from the outer end of the vane towards the axis of the housng, together with means to vary the centrifugal flow distribution relative to the housing to render the preconditioner adjustable for various flow capacities.

  16. A Simple Heat-Flow Quality Function And Appraisal Of Heat-Flow...

    Open Energy Info (EERE)

    Simple Heat-Flow Quality Function And Appraisal Of Heat-Flow Measurements And Heat-Flow Estimates From The Uk Geothermal Catalogue Jump to: navigation, search OpenEI Reference...

  17. Liquid metal Flow Meter - Final Report

    SciTech Connect (OSTI)

    Andersen C, Hoogendoom S, Hudson B, Prince J, Teichert K, Wood J, Chase K

    2007-01-30T23:59:59.000Z

    Measuring the flow of liquid metal presents serious challenges. Current commercially-available flow meters use ultrasonic, electromagnetic, and other technologies to measure flow, but are inadequate for liquid metal flow measurement because of the high temperatures required by most liquid metals. As a result of the reactivity and high temperatures of most liquid metals, corrosion and leakage become very serious safety concerns. The purpose of this project is to develop a flow meter for Lockheed Martin that measures the flow rate of molten metal in a conduit.

  18. Soluble Lead Flow Battery: Soluble Lead Flow Battery Technology

    SciTech Connect (OSTI)

    None

    2010-09-01T23:59:59.000Z

    GRIDS Project: General Atomics is developing a flow battery technology based on chemistry similar to that used in the traditional lead-acid battery found in nearly every car on the road today. Flow batteries store energy in chemicals that are held in tanks outside the battery. When the energy is needed, the chemicals are pumped through the battery. Using the same basic chemistry as a traditional battery but storing its energy outside of the cell allows for the use of very low cost materials. The goal is to develop a system that is far more durable than todays lead-acid batteries, can be scaled to deliver megawatts of power, and which lowers the cost of energy storage below $100 per kilowatt hour.

  19. POSITIVE TRAIN CONTROL

    E-Print Network [OSTI]

    Suresh Badugu; Anoosha Movva

    Abstract Positive train control (PTC) is a modern system of monitoring and controlling train movements to provide advanced safety. This system uses the latest technology in mobile wireless communication. In Sept 2008, the US Congress considered a new rail safety law that sets a deadline of 2015 for implementation of positive train control (PTC) technology across most of the U.S. rail network. The bill was developed in response to the collision of a Metro link passenger train and a Union Pacific freight train Sept. 12 in California, which resulted in the deaths of 25 and injuries to more than 135 Metrolink passengers.

  20. Transportation Science and the Dynamics of

    E-Print Network [OSTI]

    Nagurney, Anna

    , Airports, Railyards Roads, Airline Routes, Railroad Track Automobiles, Trains, and Planes, Manufacturing Computers, Satellites, Telephone Exchanges Fiber Optic Cables Radio Links Voice, Data, Video Energy Pumping Stations, Plants Pipelines, Transmission Lines Water, Gas, Oil, Electricity #12;US Railroad Freight Flows

  1. Water and Mercury Pipe Flow Simulation in FLUENTSimulation in FLUENT

    E-Print Network [OSTI]

    McDonald, Kirk

    Water and Mercury Pipe Flow Simulation in FLUENTSimulation in FLUENT Yan Zhan, Foluso Ladeinde Stony Brook University thSep.21th , 2010 #12;OutlineOutline · Straight Pipe flowStraight Pipe flow · Curved pipe flow #12;OutlineOutline · Straight Pipe flowStraight Pipe flow · Curved pipe flow #12

  2. Analysis of oscillating flow cooled SMA actuator

    E-Print Network [OSTI]

    Pachalla Seshadri, Rajagopal

    2005-11-01T23:59:59.000Z

    literature, most of the cooling mechanisms involve unidirectional forced convection. This may not be the most effective method. Oscillating flow in a channel can sometimes enhance heat transfer over a unidirectional flow. One possible explanation...

  3. A quasionedimensional approach for hypersonic stagnationpoint flows

    E-Print Network [OSTI]

    A quasi­onedimensional approach for hypersonic stagnation­point flows Arno Klomfass 1 Lehr­ und An approximate method for the efficient calculation of stagnation streamline quantities in hypersonic flows about

  4. GUI for Hypersonic flow solver Master Project

    E-Print Network [OSTI]

    Diggavi, Suhas

    GUI for Hypersonic flow solver Master Project Student : Enrique Guzman concerns the design of a GUI for commanding hypersonic flow applications using CFD techniques, as well as its potential applications. These problems are quite complex, since the called hypersonic regime

  5. Smokeless Control of Flare Steam Flow Rate

    E-Print Network [OSTI]

    Agar, J.; Balls, B. W.

    1979-01-01T23:59:59.000Z

    measurement of mass flow rate of flare gas, in spite of the hostile environment. Its use for initiating control of flare steam flow rate and the addition of molecular weight compensation, using specific gravity (relative density) measurement to achieve...

  6. Decentralized information flow control on a cluster

    E-Print Network [OSTI]

    Cliffer, Natan Tsvi Cohen

    2007-01-01T23:59:59.000Z

    Information flow control security models can prevent programs from divulging sensitive information in unexpected ways. There has been significant work on tracking information flow between processes in the same computer at ...

  7. Electromagnetically Induced Flows Michiel de Reus

    E-Print Network [OSTI]

    Vuik, Kees

    Electromagnetically Induced Flows in Water Michiel de Reus 8 maart 2013 () Electromagnetically Conclusion and future research () Electromagnetically Induced Flows 2 / 56 #12;1 Introduction 2 Maxwell Navier Stokes equations 5 Simulations 6 Conclusion and future research () Electromagnetically Induced

  8. Numerical simulation of electrokinetically driven micro flows

    E-Print Network [OSTI]

    Hahm, Jungyoon

    2005-11-01T23:59:59.000Z

    Spectral element based numerical solvers are developed to simulate electrokinetically driven flows for micro-fluidic applications. Based on these numerical solvers, basic phenomena and devices for electrokinetic applications in micro and nano flows...

  9. gtp_flow_power_estimator.xlsx

    Broader source: Energy.gov [DOE]

    This simple spreadsheet model estimates either the flow rate required to produce a specified level of power output, or the power output that can be produced from a specified flow rate.

  10. Cascade redox flow battery systems

    DOE Patents [OSTI]

    Horne, Craig R.; Kinoshita, Kim; Hickey, Darren B.; Sha, Jay E.; Bose, Deepak

    2014-07-22T23:59:59.000Z

    A reduction/oxidation ("redox") flow battery system includes a series of electrochemical cells arranged in a cascade, whereby liquid electrolyte reacts in a first electrochemical cell (or group of cells) before being directed into a second cell (or group of cells) where it reacts before being directed to subsequent cells. The cascade includes 2 to n stages, each stage having one or more electrochemical cells. During a charge reaction, electrolyte entering a first stage will have a lower state-of-charge than electrolyte entering the nth stage. In some embodiments, cell components and/or characteristics may be configured based on a state-of-charge of electrolytes expected at each cascade stage. Such engineered cascades provide redox flow battery systems with higher energy efficiency over a broader range of current density than prior art arrangements.

  11. Gas flow in barred potentials

    E-Print Network [OSTI]

    Sormani, Mattia C; Magorrian, John

    2015-01-01T23:59:59.000Z

    We use a Cartesian grid to simulate the flow of gas in a barred Galactic potential and investigate the effects of varying the sound speed in the gas and the resolution of the grid. For all sound speeds and resolutions, streamlines closely follow closed orbits at large and small radii. At intermediate radii shocks arise and the streamlines shift between two families of closed orbits. The point at which the shocks appear and the streamlines shift between orbit families depends strongly on sound speed and resolution. For sufficiently large values of these two parameters, the transfer happens at the cusped orbit as hypothesised by Binney et al. over two decades ago. For sufficiently high resolutions the flow downstream of the shocks becomes unsteady. If this unsteadiness is physical, as appears to be the case, it provides a promising explanation for the asymmetry in the observed distribution of CO.

  12. Zonal Flow as Pattern Formation

    E-Print Network [OSTI]

    Parker, Jeffrey B

    2015-01-01T23:59:59.000Z

    In this section, we examine the transition from statistically homogeneous turbulence to inhomogeneous turbulence with zonal flows. Statistical equations of motion can be derived from the quasilinear approximation to the Hasegawa-Mima equation. We review recent work that finds a bifurcation of these equations and shows that the emergence of zonal flows mathematically follows a standard type of pattern formation. We also show that the dispersion relation of modulational instability can be extracted from the statistical equations of motion in a certain limit. The statistical formulation can thus be thought to offer a more general perspective on growth of coherent structures, namely through instability of a full turbulent spectrum. Finally, we offer a physical perspective on the growth of large-scale structures.

  13. Flow Imaging Using MRI: Quantification and Analysis

    E-Print Network [OSTI]

    Jiraraksopakun, Yuttapong

    2010-07-14T23:59:59.000Z

    &M University in partial fulfillment of the requirements for the degree of DOCTOR OF PHILOSOPHY Approved by: Chair of Committee, Jim Ji Committee Members, Andrew K. Chan Deepa Kundur Yoonsuck Choe Mary P. McDougall Head of Department, Costas N... Committee: Dr. Jim Ji A complex and challenging problem in flow study is to obtain quantitative flow information in opaque systems, for example, blood flow in biological systems and flow channels in chemical reactors. In this regard, MRI is superior...

  14. A theory for radial jet reattachment flow

    E-Print Network [OSTI]

    Hadden, Lynne Loise

    2012-06-07T23:59:59.000Z

    , the velocity profile and mass entrainment are given accordrng to Goertler's t. wo- dimensional free jet theory. His analysrs of a free jet also assumes that. the turbulent eddy viscosity is constant ar ross the jet. (6) For the case of laminar flow... of total jet momentum. Laminar jet flow is approximated using Schlichting's velocity profile, whereas turbulent flow calculations are made assuming Goertler's velocity profile. Momentum integral principles are applied to the flow at reattachment...

  15. Anisotropic collective flow of a Lorentz gas

    E-Print Network [OSTI]

    Nicolas Borghini; Clement Gombeaud

    2011-06-30T23:59:59.000Z

    Analytical results for the anisotropic collective flow of a Lorentz gas of massless particles scattering on fixed centres are presented.

  16. Building up the elliptic flow: analytical insights

    E-Print Network [OSTI]

    Yoshitaka Hatta; Bo-Wen Xiao

    2014-07-15T23:59:59.000Z

    In this paper, we present a fully analytical description of the early-stage formation of elliptic flow in relativistic viscous hydrodynamics. We first construct an elliptic deformation of Gubser flow which is a boost invariant solution of the Navier-Stokes equation with a nontrivial transverse profile. We then analytically calculate the momentum anisotropy of the flow as a function of time and discuss the connection with the empirical formula by Bhalerao {\\it et al.} regarding the viscosity dependence of elliptic flow.

  17. The Cotton tensor and the Ricci flow

    E-Print Network [OSTI]

    Mantegazza, Carlo

    2012-01-01T23:59:59.000Z

    We compute the evolution equation of the Cotton tensor under the Ricci flow of a three dimensional Riemannian manifold.

  18. Countercurrent flow absorber and desorber

    DOE Patents [OSTI]

    Wilkinson, W.H.

    1984-10-16T23:59:59.000Z

    Countercurrent flow absorber and desorber devices are provided for use in absorption cycle refrigeration systems and thermal boosting systems. The devices have increased residence time and surface area resulting in improved heat and mass transfer characteristics. The apparatuses may be incorporated into open cycle thermal boosting systems in which steam serves both as the refrigerant vapor which is supplied to the absorber section and as the supply of heat to drive the desorber section of the system. 9 figs.

  19. Countercurrent flow absorber and desorber

    DOE Patents [OSTI]

    Wilkinson, William H. (Columbus, OH)

    1984-01-01T23:59:59.000Z

    Countercurrent flow absorber and desorber devices are provided for use in absorption cycle refrigeration systems and thermal boosting systems. The devices have increased residence time and surface area resulting in improved heat and mass transfer characteristics. The apparatuses may be incorporated into open cycle thermal boosting systems in which steam serves both as the refrigerant vapor which is supplied to the absorber section and as the supply of heat to drive the desorber section of the system.

  20. Microgravity Flow Regime Transition Modeling

    E-Print Network [OSTI]

    Shephard, Adam M.

    2010-07-14T23:59:59.000Z

    apparatus have been used in past flow regime mapping experiments such as Venturi, perforated pipe, annular, and t-junction mixers. The mixing apparatus used in a particular experiment determines the bubble size distribution at the inlet... pressure of 80 kPa was reported, however, the temperature was not. The orientation and location of the test section with respect to the aircraft are unknown. The mixing apparatus used in the experiment was a Venturi mixer. This data set does...

  1. Incompressible flow over delta wings

    E-Print Network [OSTI]

    Nathman, James Kirwin

    1976-01-01T23:59:59.000Z

    &M University. vi TABLE OF CONTENTS ~Pa e INTRODUCTION REVIEW OF LITERATURE THEORY 12 NUMERICAL APPLICATIONS AND RESULTS Attached Flow Model Calculation of Pressure Distribution Fixed-Wake Model Free-Wake Model CONCLUSIONS 21 21 24 26 32 52...- lation. This theory has been expanded to include spanwise velocity effects and the leading-edge separation associated with delta wings. The numerical technique has made use of both fixed and free wakes. In the fixed-wake model the analytical results...

  2. Cyclotron resonance in plasma flow

    SciTech Connect (OSTI)

    Artemyev, A. V.; Agapitov, O. V.; Krasnoselskikh, V. V. [LPC2E/CNRS-University of Orleans, Orleans (France)] [LPC2E/CNRS-University of Orleans, Orleans (France)

    2013-12-15T23:59:59.000Z

    This paper is devoted to the mechanism of particle acceleration via resonant interaction with the electromagnetic circular wave propagating along the inhomogeneous background magnetic field in the presence of a plasma flow. We consider the system where the plasma flow velocity is large enough to change the direction of wave propagation in the rest frame. This system mimics a magnetic field configuration typical for inner structure of a quasi-parallel shock wave. We consider conditions of gyroresonant interaction when the force corresponding to an inhomogeneity of the background magnetic field is compensated by the Lorentz force of the wave-magnetic field. The wave-amplitude is assumed to be about 10% of the background magnetic field. We show that particles can gain energy if kv{sub sw}>?>kv{sub sw}??{sub c} where k is the wave number, v{sub sw} is a plasma flow velocity, and ? and ?{sub c} are the wave frequency and the particle gyrofrequency, respectively. This mechanism of acceleration resembles the gyrosurfing mechanism, but the effect of the electrostatic field is replaced by the effect of the magnetic field inhomogeneity.

  3. Structural stability of cooling flows

    E-Print Network [OSTI]

    Henrik Omma; James Binney

    2003-12-31T23:59:59.000Z

    Three-dimensional hydrodynamical simulations are used to investigate the structural stability of cooling flows that are episodically heated by jets from a central AGN. The radial profile of energy deposition is controlled by (a) the power of the jets, and (b) the pre-outburst density profile. A delay in the ignition of the jets causes more powerful jets to impact on a more centrally concentrated medium. The net effect is a sufficient increase in the central concentration of energy deposition to cause the post-outburst density profile to be less centrally concentrated than that of an identical cluster in which the outburst happened earlier and was weaker. These results suggest that the density profiles of cooling flows oscillate around an attracting profile, thus explaining why cooling flows are observed to have similar density profiles. The possibility is raised that powerful FR II systems are ones in which this feedback mechanism has broken down and a runaway growth of the source parameters has occurred.

  4. Flow Duration Curve Load Duration Curve

    E-Print Network [OSTI]

    #12;Flow Duration Curve Load Duration Curve #12;1. Develop Flow Duration Curve 2. Estimate load given flow and concentration data--select appropriate conversion factors 3. Develop Load Duration Curve 4. Plot observed data with Load Duration Curve #12;What are they? How do you make one? #12;Describes

  5. A quasionedimensional approach for hypersonic stagnationpoint flows

    E-Print Network [OSTI]

    A quasi­onedimensional approach for hypersonic stagnation­point flows Arno Klomfass 1 Lehr­ und An approximate method for the efficient calculation of stagnation streamline quantities in hypersonic flows about­conduction coefficient [W=mK] 2 Introduction The hypersonic flow about a spacecraft entering the atmosphere at orbital

  6. Optimal Power Flow Incorporating Voltage Collapse Constraints

    E-Print Network [OSTI]

    Cañizares, Claudio A.

    Optimal Power Flow Incorporating Voltage Collapse Constraints William Rosehart Claudio Ca on the current operating con- ditions is presented. Second, an Optimal Power Flow formulation that incorporates: Voltage Collapse, Optimal Power Flow, Bifur- cations. I. Introduction As open-access market principles

  7. (Preview Draft) Chapter 3. Stocks and Flows

    E-Print Network [OSTI]

    Ford, Andrew

    the state over time. It will take some time for the flows to have their effect on the stocks, so the stocks(Preview Draft) Chapter 3. Stocks and Flows: The Building Blocks of System Dynamics Models The best way to construct a model is to start with the stocks, add the flows and then use converters to explain

  8. Progress in Grid Scale Flow Batteries

    E-Print Network [OSTI]

    Progress in Grid Scale Flow Batteries IMRE GYUK, PROGRAM MANAGER ENERGY STORAGE RESEARCH, DOE Flow;LogMW Renewables (not capacity factor adjusted) 9 8 7 6 5 4 3 Wind Wind (proj) Solar PV Solar PV 2011Year #12;Flow Battery Research at PNNL and Sandia #12

  9. Managing talent flow. 2006 Energy and Resources

    E-Print Network [OSTI]

    Managing talent flow. 2006 Energy and Resources Talent Pulse Survey Report Consulting #12;Executive ................................................................ 13 Contents #12;1 Managing talent flow 2006 Energy and Resources Talent Pulse Survey Report 2006 strategy. 1 #12;2 Managing talent flow 2006 Energy and Resources Talent Pulse Survey Report Key findings

  10. SEISMIC MONITORING OF CARBON DIOXIDE FLUID FLOW

    E-Print Network [OSTI]

    Santos, Juan

    SEISMIC MONITORING OF CARBON DIOXIDE FLUID FLOW J. E. Santos1, G. B. Savioli2, J. M. Carcione3, D´e, Argentina SEISMIC MONITORING OF CARBON DIOXIDE FLUID FLOW ­ p. #12;Introduction. I Storage of CO2). SEISMIC MONITORING OF CARBON DIOXIDE FLUID FLOW ­ p. #12;Introduction. II CO2 is separated from natural

  11. Setup of Particle Image Velocimetry (PIV) in Hypersonic Flows.

    E-Print Network [OSTI]

    Anwar, Moazzam

    2008-01-01T23:59:59.000Z

    ??The accuracy of numerical methods in calculating the flow of backward facing steps in turbulent hypersonic flows is limited due to a lack of flow (more)

  12. WHICH HYDRAULIC MODEL TO USE IN VERTICAL FLOW CONSTRUCTED WETLANDS?

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    WHICH HYDRAULIC MODEL TO USE IN VERTICAL FLOW CONSTRUCTED WETLANDS? Ania Morvannoua , Nicolas-equilibrium model, preferential flow path, vertical flow constructed wetlands INTRODUCTION Constructed wetlands (CWs

  13. Life Cycle Assessment Comparing the Use of Jatropha Biodiesel in the Indian Road and Rail Sectors

    SciTech Connect (OSTI)

    Whitaker, M.; Heath, G.

    2010-05-01T23:59:59.000Z

    This life cycle assessment of Jatropha biodiesel production and use evaluates the net greenhouse gas (GHG) emission (not considering land-use change), net energy value (NEV), and net petroleum consumption impacts of substituting Jatropha biodiesel for conventional petroleum diesel in India. Several blends of biodiesel with petroleum diesel are evaluated for the rail freight, rail passenger, road freight, and road-passenger transport sectors that currently rely heavily on petroleum diesel. For the base case, Jatropha cultivation, processing, and use conditions that were analyzed, the use of B20 results in a net reduction in GHG emissions and petroleum consumption of 14% and 17%, respectively, and a NEV increase of 58% compared with the use of 100% petroleum diesel. While the road-passenger transport sector provides the greatest sustainability benefits per 1000 gross tonne kilometers, the road freight sector eventually provides the greatest absolute benefits owing to substantially higher projected utilization by year 2020. Nevertheless, introduction of biodiesel to the rail sector might present the fewest logistic and capital expenditure challenges in the near term. Sensitivity analyses confirmed that the sustainability benefits are maintained under multiple plausible cultivation, processing, and distribution scenarios. However, the sustainability of any individual Jatropha plantation will depend on site-specific conditions.

  14. Self-regulating flow control device

    DOE Patents [OSTI]

    Humphreys, Duane A. (Pittsburgh, PA)

    1984-01-01T23:59:59.000Z

    A variable, self-regulating valve having a hydraulic loss coefficient proportional to a positive exponential power of the flow rate. The device includes two objects in a flow channel and structure which assures that the distance between the two objects is an increasing function of the flow rate. The range of spacing between the objects is such that the hydraulic resistance of the valve is an increasing function of the distance between the two objects so that the desired hydraulic loss coefficient as a function of flow rate is obtained without variation in the flow area.

  15. Chemical preconcentrator with integral thermal flow sensor

    DOE Patents [OSTI]

    Manginell, Ronald P. (Albuquerque, NM); Frye-Mason, Gregory C. (Cedar Crest, NM)

    2003-01-01T23:59:59.000Z

    A chemical preconcentrator with integral thermal flow sensor can be used to accurately measure fluid flow rate in a microanalytical system. The thermal flow sensor can be operated in either constant temperature or constant power mode and variants thereof. The chemical preconcentrator with integral thermal flow sensor can be fabricated with the same MEMS technology as the rest of the microanlaytical system. Because of its low heat capacity, low-loss, and small size, the chemical preconcentrator with integral thermal flow sensor is fast and efficient enough to be used in battery-powered, portable microanalytical systems.

  16. ASRS Database Report Set Passenger Electronic Devices

    E-Print Network [OSTI]

    be limited. The National Aeronautics and Space Administration and its ASRS current contractor, Booz Allen Hamilton, specifically disclaim any responsibility for any interpretation which may be made by others

  17. Thermoelectric Generator Performance for Passenger Vehicles

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

    modeling and architecture evaluation * Phase 2: Subsystem design, build and bench test * Phase 3: System integration. Planar configuration TEG with primary HEX and secondary...

  18. Passenger Name Record Data Mining Based Cancellation ...

    E-Print Network [OSTI]

    2008-04-16T23:59:59.000Z

    Apr 16, 2008 ... demand-management decisions such as dynamic pricing and capacity ... ket information and uses them to forecast the demand and learn...

  19. Transportation Network Modeling in Passenger Transportation

    E-Print Network [OSTI]

    Daniels, Thomas E.

    , Cars (hybrid and gasoline) ­ Trains (electric and diesel) ­ Barges ­ Planes · Decision Variables. Coal 2. Non-coal Truck/ diesel Train/ diesel Highway Railway Node/Arc based (k-ton/year) 1. Induced 2

  20. Evolution of flow disturbances in cocurrent gas-liquid flows

    SciTech Connect (OSTI)

    McCready, M.J.

    1992-10-01T23:59:59.000Z

    Studies of interfacial waves in horizontal gas-liquid flows, close to neutral stability, suggest that the rate of evolution of the interface may be linked to nonlinear interactions between the fundamental mode and the subharmonic -- even if the subharmonic is linearly stable. The rate of evolution increases as the subharmonic becomes more unstable. A comparison of linear stability techniques used to predict the initial behavior of waves reveals similar predictions of growth rates and almost identical speeds between a two layer laminar Orr-Sommerfeld theory and an Orr-Sommerfeld theory when the effect of the (turbulent) gas flow enters as boundary conditions on the liquid layer. However, there is disagreement at small wavenumbers as to the point at which the growth curve crosses 0. This is a significant problem because longwave disturbances, in our case roll waves, form by growth of (initially) small amplitude waves that have frequencies which are 0.5 to 1 Hz, which is in the range where the two theories disagree about the sign of the growth rate. While nonlinear effects are probably involved in the formation of the peak (at least while its amplitude is small), the linear growth rate must play an important role when the amplitude is small.

  1. Jet quenching and elliptic flow

    E-Print Network [OSTI]

    A. K. Chaudhuri

    2007-08-29T23:59:59.000Z

    In jet quenching, a hard QCD parton, before fragmenting into a jet of hadrons, deposits a fraction of its energy in the medium, leading to suppressed production of high-$p_T$ hadrons. Assuming that the deposited energy quickly thermalizes, we simulate the subsequent hydrodynamic evolution of the QGP fluid. Explicit simulation of Au+Au collision with and without a quenching jet indicate that elliptic flow is greatly reduced in a jet event. The result can be used to identify the jet events in heavy ion collisions.

  2. A new precision flow calorimeter

    E-Print Network [OSTI]

    Johnson, Mark Gezer

    1984-01-01T23:59:59.000Z

    differences. With no sample fluid flowing, a supply of electrical power is fed to the inner calorimeter. The reference fluid is evaporated with this electrical power and the thermo-syphon system is brought to controlled steady-state conditions of pressure... calorimeter is kept cooler than the inner calorimeter for reasons discussed in chapter 4. Thus the above mentioned procedure is essential to avoid condensation in Freon@-11 vapor lines. The thermo-syphon ensures a saturated Freon&-11 vapor phase in the top...

  3. Cognitive Radio will revolutionize American transportation

    ScienceCinema (OSTI)

    None

    2013-12-06T23:59:59.000Z

    Cognitive Radio will revolutionize American transportation. Through smart technology, it will anticipate user needs; detect available bandwidths and frequencies then seamlessly connect vehicles, infrastructures, and consumer devices; and it will support the Department of Transportation IntelliDrive Program, helping researchers, auto manufacturers, and Federal and State officials advance the connectivity of US transportation systems for improved safety, mobility, and environmental conditions. Using cognitive radio, a commercial vehicle will know its driver, onboard freight and destination route. Drivers will save time and resources communicating with automatic toll booths and know ahead of time whether to stop at a weigh station or keep rolling. At accident scenes, cognitive radio sensors on freight and transportation modes can alert emergency personnel and measure on-site, real-time conditions such as a chemical leak. The sensors will connect freight to industry, relaying shipment conditions and new delivery schedules. For industry or military purposes, cognitive radio will enable real-time freight tracking around the globe and its sensory technology can help prevent cargo theft or tampering by alerting shipper and receiver if freight is tampered with while en route. For the average consumer, a vehicle will tailor the transportation experience to the passenger such as delivering age-appropriate movies via satellite. Cognitive radio will enhance transportation safety by continually sensing what is important to the user adapting to its environment and incoming information, and proposing solutions that improve mobility and quality of life.

  4. Cognitive Radio will revolutionize American transportation

    SciTech Connect (OSTI)

    None

    2013-07-22T23:59:59.000Z

    Cognitive Radio will revolutionize American transportation. Through smart technology, it will anticipate user needs; detect available bandwidths and frequencies then seamlessly connect vehicles, infrastructures, and consumer devices; and it will support the Department of Transportation IntelliDrive Program, helping researchers, auto manufacturers, and Federal and State officials advance the connectivity of US transportation systems for improved safety, mobility, and environmental conditions. Using cognitive radio, a commercial vehicle will know its driver, onboard freight and destination route. Drivers will save time and resources communicating with automatic toll booths and know ahead of time whether to stop at a weigh station or keep rolling. At accident scenes, cognitive radio sensors on freight and transportation modes can alert emergency personnel and measure on-site, real-time conditions such as a chemical leak. The sensors will connect freight to industry, relaying shipment conditions and new delivery schedules. For industry or military purposes, cognitive radio will enable real-time freight tracking around the globe and its sensory technology can help prevent cargo theft or tampering by alerting shipper and receiver if freight is tampered with while en route. For the average consumer, a vehicle will tailor the transportation experience to the passenger such as delivering age-appropriate movies via satellite. Cognitive radio will enhance transportation safety by continually sensing what is important to the user adapting to its environment and incoming information, and proposing solutions that improve mobility and quality of life.

  5. Fluid Flow and Thermodynamic Analysis of a Wing Anti-Icing System

    E-Print Network [OSTI]

    Liu, Hugh H.T.

    is installed on most passenger airplanes. It introduces hot bleeding air from the power plant into the wing-mail: liu@utias.utoronto.ca Received 26 August 2003. 1. INTRODUCTION The thermal anti-icing system of this paper is to apply the existing CFD tools to assist the system modeling and simulation analysis

  6. Potential Flow Calculations of Axisymmetric Ducted Wind Turbines

    E-Print Network [OSTI]

    Widnall, Sheila

    2009-09-02T23:59:59.000Z

    An incompressible potential-flow vortex method has been constructed to analyze the flow field of a ducted

  7. Flow shop scheduling with peak power consumption constraints

    E-Print Network [OSTI]

    K. Fang

    2012-03-29T23:59:59.000Z

    Mar 29, 2012 ... Flow shop scheduling with peak power consumption constraints ... Keywords: scheduling, flow shop, energy, peak power consumption, integer...

  8. Controlling the Delay of Small Flows in Datacenters

    E-Print Network [OSTI]

    Carra, Damiano

    and CAPEX and ignore designs which could help reduce delay of delay sensitive flows. The flow routing

  9. Process for retarding fluid flow

    SciTech Connect (OSTI)

    Sandford, B.B.; Zillmer, R.C.

    1989-01-10T23:59:59.000Z

    A process is described for retarding the flow of fluid in a subterranean formation, comprising: (a) introducing an effective amount of a gel-forming composition into a subterranean formation, the gel-forming composition being operable when gelled in the formation for retarding the flow of fluid therein. The gel-forming composition consists of: i. a first substance dissolved in water to form an aqueous solution, the first substance being selected from the group consisting of polyvivyl alcohols, and mixtures thereof, wherein the gel-forming composition contains an amount of the first substance of from about 0.5 to about 5 weight percent of the gel-forming composition, and ii. an effective amount of glutaraldehyde which is operable for forming a weakly acidic condition having a pH from about 5.5 to less than 7 in the gel-forming composition and also operable for promoting crosslinking of the first substance and glutaraldehyde and for forming a gel from the gel-forming composition under the weakly acidic condition within a period of time no greater than about 5 days without adding an acidic catalyst to the gel-forming composition to lower the pH of the gel-forming composition below about 5.5.

  10. Proximal bodies in hypersonic flow

    SciTech Connect (OSTI)

    Deiterding, Ralf [ORNL; Laurence, Stuart J [California Institute of Technology, Pasadena; Hornung, Hans G [California Institute of Technology, Pasadena

    2007-01-01T23:59:59.000Z

    Hypersonic flows involving two or more bodies travelling in close proximity to one another are encountered in several important situations, both natural and man-made. The present work seeks to investigate one aspect of the resulting flow problem by exploring the forces experienced by a secondary body when it is within the domain of influence of a primary body travelling at hypersonic speeds. An analytical methodology based on the blast wave analogy is developed and used to predict the secondary force coefficients for simple geometries in both two and three dimensions. When the secondary body is entirely inside the primary shocked region, the nature of the lateral force coefficient is found to depend strongly on the relative size of the two bodies. For two spheres, the methodology predicts that the secondary body will experience an exclusively attractive lateral force if the secondary diameter is larger than one-sixth the primary diameter. The analytical results are compared with those from numerical simulations and reasonable agreement is observed if an appropriate normalization for the lateral displacement is used. Results from a series of experiments in the T5 hypervelocity shock tunnel are also presented and compared with perfect-gas numerical simulations, with good agreement. A new force-measurement technique for short-duration hypersonic facilities, enabling the experimental simulation of the proximal bodies problem, is described. This technique provides two independent means of measurement, and the agreement observed between the two gives a further degree of confidence in the results obtained.

  11. A constitutive law for dense granular flows

    E-Print Network [OSTI]

    Pierre Jop; Yol Forterre; Olivier Pouliquen

    2006-12-05T23:59:59.000Z

    A continuum description of granular flows would be of considerable help in predicting natural geophysical hazards or in designing industrial processes. However, the constitutive equations for dry granular flows, which govern how the material moves under shear, are still a matter of debate. One difficulty is that grains can behave like a solid (in a sand pile), a liquid (when poured from a silo) or a gas (when strongly agitated). For the two extreme regimes, constitutive equations have been proposed based on kinetic theory for collisional rapid flows, and soil mechanics for slow plastic flows. However, the intermediate dense regime, where the granular material flows like a liquid, still lacks a unified view and has motivated many studies over the past decade. The main characteristics of granular liquids are: a yield criterion (a critical shear stress below which flow is not possible) and a complex dependence on shear rate when flowing. In this sense, granular matter shares similarities with classical visco-plastic fluids such as Bingham fluids. Here we propose a new constitutive relation for dense granular flows, inspired by this analogy and recent numerical and experimental work. We then test our three-dimensional (3D) model through experiments on granular flows on a pile between rough sidewalls, in which a complex 3D flow pattern develops. We show that, without any fitting parameter, the model gives quantitative predictions for the flow shape and velocity profiles. Our results support the idea that a simple visco-plastic approach can quantitatively capture granular flow properties, and could serve as a basic tool for modelling more complex flows in geophysical or industrial applications.

  12. CFD analysis of laminar oscillating flows

    SciTech Connect (OSTI)

    Booten, C. W. Charles W.); Konecni, S. (Snezana); Smith, B. L. (Barton L.); Martin, R. A. (Richard A.)

    2001-01-01T23:59:59.000Z

    This paper describes a numerical simulations of oscillating flow in a constricted duct and compares the results with experimental and theoretical data. The numerical simulations were performed using the computational fluid dynamics (CFD) code CFX4.2. The numerical model simulates an experimental oscillating flow facility that was designed to test the properties and characteristics of oscillating flow in tapered ducts, also known as jet pumps. Jet pumps are useful devices in thermoacoustic machinery because they produce a secondary pressure that can counteract an unwanted effect called streaming, and significantly enhance engine efficiency. The simulations revealed that CFX could accurately model velocity, shear stress and pressure variations in laminar oscillating flow. The numerical results were compared to experimental data and theoretical predictions with varying success. The least accurate numerical results were obtained when laminar flow approached transition to turbulent flow.

  13. Flow characteristics in underground coal gasification

    SciTech Connect (OSTI)

    Chang, H.L.; Himmelblau, D.M.; Edgar, T.F.

    1982-01-01T23:59:59.000Z

    During the Hoe Creek No. 2 (Wyoming) underground-coal-gasification field test, researchers introduced helium pulses to characterize the flow field and to estimate the coefficients in dispersion models of the flow. Flow models such as the axial-dispersion and parallel tanks-in-series models allowed interpretation of the in situ combustion flow field from the residence time distribution of the tracer gas. A quantitative analysis of the Hoe Creek tracer response curves revealed an increasing departure from a plug-flow regime with time, which was due to the combined effects of the free and forced convection in addition to the complex nonuniformity of the flow field. The Peclet number was a function of temperature, pressure, gas recovery, and characteristic velocity, as well as the split of the gas between the parallel streams in the model.

  14. Dissipation flow-frames: particle, energy, thermometer

    E-Print Network [OSTI]

    Vn, P

    2013-01-01T23:59:59.000Z

    We associate the following physical co-mover conditions of to different frame choices: i) Eckart: particle flow, ii) Landau-Lifshitz: energy flow, iii) J\\"uttner: moving thermometer frame. The role of fixing a flow-frame is analysed with respect to local equilibrium concentrating on dissipative currents and forces in single component relativistic fluids. The special role of a "J\\"uttner frame" is explored and contrasted to the more common Eckart and Landau-Lifshitz choices.

  15. Dissipation flow-frames: particle, energy, thermometer

    E-Print Network [OSTI]

    P. Vn; T. S. Bir

    2013-05-14T23:59:59.000Z

    We associate the following physical co-mover conditions of to different frame choices: i) Eckart: particle flow, ii) Landau-Lifshitz: energy flow, iii) J\\"uttner: moving thermometer frame. The role of fixing a flow-frame is analysed with respect to local equilibrium concentrating on dissipative currents and forces in single component relativistic fluids. The special role of a "J\\"uttner frame" is explored and contrasted to the more common Eckart and Landau-Lifshitz choices.

  16. SOLVENT DISPERSION AND FLOW METER CALCULATION RESULTS

    SciTech Connect (OSTI)

    Nash, C.; Fondeur, F.; Peters, T.

    2013-06-21T23:59:59.000Z

    Savannah River National Laboratory (SRNL) found that the dispersion numbers for the six combinations of CSSX:Next Generation Solvent (NGS) blend and pure NGS versus salt solution, caustic wash, and strip aqueous solutions are all good. The dispersion numbers are indications of processability with centrifugal contactors. A comparison of solvent physical and thermal properties shows that the Intek solvent flow meter in the plant has a reading biased high versus calibrated flow when NGS is used, versus the standard CSSX solvent. The flow meter, calibrated for CSSX solvent, is predicted to read 2.8 gpm of NGS in a case where the true flow of NGS is 2.16 gpm.

  17. Applications in MPC and Network Flows

    E-Print Network [OSTI]

    2013-05-08T23:59:59.000Z

    This allows for improvement in communication-efficiency. We apply our algorithm to model predictive control (MPC) and to network flow problems and show,...

  18. Radionuclide Sensors for Environmental Monitoring: From Flow...

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

    to Equilibration-Based Radionuclide Sensors for Environmental Monitoring: From Flow Injection Solid-Phase Absorptiometry to Equilibration-Based Abstract: The development...

  19. Flow visualisation in inclined louvered fins

    SciTech Connect (OSTI)

    T'Joen, C.; De Paepe, M. [Department of Flow, Heat and Combustion Mechanics, Ghent University-UGent, Sint-Pietersnieuwstraat 41, 9000 Gent (Belgium); Jacobi, A. [Department of Mechanical Science and Engineering, University of Illinois at Urbana-Champaign, 1206 West Green Street, Urbana, IL 61801 (United States)

    2009-04-15T23:59:59.000Z

    In this study the flow within an interrupted fin design, the inclined louvered fin, is investigated experimentally through visualisation. The inclined louvered fin is a hybrid of the offset strip fin and standard louvered fin, aimed at improved performance at low Reynolds numbers for compact heat exchangers. The flow behaviour is studied in six geometrically different configurations over a range of Reynolds numbers and quantified using the concept of 'fin angle alignment factor'. The transition from steady laminar to unsteady flow was studied in detail. The fin geometry had a very large impact on the transitional flow behaviour, especially on vortex shedding. (author)

  20. Microsphere estimates of blood flow: Methodological considerations

    SciTech Connect (OSTI)

    von Ritter, C.; Hinder, R.A.; Womack, W.; Bauerfeind, P.; Fimmel, C.J.; Kvietys, P.R.; Granger, D.N.; Blum, A.L. (Univ. of the Witwatersrand, Johannesburg (South Africa) Louisianna State Univ. Medical Center, Shreveport (USA) Universitaire Vaudois (Switzerland))

    1988-02-01T23:59:59.000Z

    The microsphere technique is a standard method for measuring blood flow in experimental animals. Sporadic reports have appeared outlining the limitations of this method. In this study the authors have systematically assessed the effect of blood withdrawals for reference sampling, microsphere numbers, and anesthesia on blood flow estimates using radioactive microspheres in dogs. Experiments were performed on 18 conscious and 12 anesthetized dogs. Four blood flow estimates were performed over 120 min using 1 {times} 10{sup 6} microspheres each time. The effects of excessive numbers of microspheres pentobarbital sodium anesthesia, and replacement of volume loss for reference samples with dextran 70 were assessed. In both conscious and anesthetized dogs a progressive decrease in gastric mucosal blood flow and cardiac output was observed over 120 min. This was also observed in the pancreas in conscious dogs. The major factor responsible for these changes was the volume loss due to the reference sample withdrawals. Replacement of the withdrawn blood with dextran 70 led to stable blood flows to all organs. The injection of excessive numbers of microspheres did not modify hemodynamics to a greater extent than did the injection of 4 million microspheres. Anesthesia exerted no influence on blood flow other than raising coronary flow. The authors conclude that although blood flow to the gastric mucosa and the pancreas is sensitive to the minor hemodynamic changes associated with the microsphere technique, replacement of volume loss for reference samples ensures stable blood flow to all organs over a 120-min period.

  1. SEISMIC MONITORING OF CARBON DIOXIDE FLUID FLOW

    E-Print Network [OSTI]

    santos

    SEISMIC MONITORING OF. CARBON DIOXIDE FLUID FLOW. J. E. Santos. 1. , G. B. Savioli. 2. , J. M. Carcione. 3. , D. Gei. 3. 1. CONICET, IGPUBA, Fac.

  2. Measurement of thermodynamics using gradient flow

    E-Print Network [OSTI]

    Masakiyo Kitazawa; Masayuki Asakawa; Tetsuo Hatsuda; Takumi Iritani; Etsuko Itou; Hiroshi Suzuki

    2014-12-15T23:59:59.000Z

    We analyze bulk thermodynamics and correlation functions of the energy-momentum tensor in pure Yang-Mills gauge theory using the energy-momentum tensor defined by the gradient flow and small flow time expansion. Our results on thermodynamic observables are consistent with those obtained by the conventional integral method. The analysis of the correlation function of total energy supports the energy conservation. It is also addressed that these analyses with gradient flow require less statistics compared with the previous methods. All these results suggest that the energy-momentum tensor can be successfully defined and observed on the lattice with moderate numerical costs with the gradient flow.

  3. Integrated Nozzle Flow, Spray, Combustion, & Emission Modeling...

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

    Spray, Combustion, & Emission Modeling using KH-ACT Primary Breakup Model & Detailed Chemistry Integrated Nozzle Flow, Spray, Combustion, & Emission Modeling using KH-ACT Primary...

  4. Fluid Gravity Engineering Rocket motor flow analysis

    E-Print Network [OSTI]

    Anand, Mahesh

    Fluid Gravity Engineering Capability · Rocket motor flow analysis -Internal (performance) -External young scientists/engineers Fluid Gravity Engineering Ltd #12;

  5. Integrated Nozzle Flow, Spray, Combustion, & Emission Modeling...

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

    Technologies Program Office Program Manager: Mr. Gurpreet Singh Petrodiesel vs. Biodiesel 2 Primary Breakup Inner Nozzle Flow Influence of Physical and Chemical properties of...

  6. Flow characteristics in underground coal gasification

    SciTech Connect (OSTI)

    Chang, H.L.; Himmelblau, D.M.; Edgar, T.F.

    1982-01-01T23:59:59.000Z

    During the underground coal gasification field test at the Hoe Creek site No. 2, Wyoming, helium pulses were introduced to develop information to characterize the flow field, and to estimate the coefficients in dispersion models of the flow. Quantitative analysis of the tracer response curves shows an increasing departure from a plug flow regime with time because of the combined effects of the free and forced convection in addition to the complex non-uniformity of the flow field. The Peclet number was a function of temperature, pressure, gas recovery and characteristic velocity, as well as the split of the gas between the parallel streams in the model. 17 refs.

  7. Theoretical uncertainty of orifice flow measurement

    SciTech Connect (OSTI)

    Husain, Z.D. [Daniel Flow Products, Inc., Houston, TX (United States)

    1995-12-01T23:59:59.000Z

    Orifice meters are the most common meters used for fluid flow measurement, especially for measuring hydrocarbons. Meters are rugged, mechanically simple, and well suited for field use under extreme weather conditions. Because of their long history of use and dominance in the fluid flow measurement, their designs, installation requirements, and equations for flow rate calculation have been standardized by different organizations in the United States and internationally. These standards provide the guideline for the users to achieve accurate flow measurement. and minimize measurement uncertainty. This paper discusses different factors that contribute to the measurement inaccuracy and provide an awareness to minimize or eliminate these errors. Many factors which influence the overall measurement uncertainty are associated with the orifice meter application. Major contributors to measurement uncertainty include the predictability of flow profile, fluid properties at flowing condition, precision of empirical equation for discharge coefficient, manufacturing tolerances in meter components, and the uncertainty associated with secondary devices monitoring the static line pressure, differential pressure across the orifice plate, flowing temperature, etc. Major factors contributing to the measurement uncertainty for a thin, concentric, square-edged orifice flowmeter are as follows: (a) Tolerances in prediction of coefficient of discharge, (b) Predictability in defining the physical properties of the flowing fluid, (c) Fluid flow condition, (d) Construction tolerances in meter components, (e) Uncertainty of secondary devices/instrumentation, and (f) Data reduction and computation. Different factors under each of the above areas are discussed with precautionary measures and installation procedures to minimize or eliminate measurement uncertainty.

  8. The transition from the annular to the slug flow regime in two-phase flow

    E-Print Network [OSTI]

    Haberstroh, Robert D.

    1964-01-01T23:59:59.000Z

    Experiments were conducted to determine the transition from annular to semiannular flow regimes for two-phase, gas-liquid upflow in vertical tubes. The influencesof liquid flow rate, tube diameter, liquid viscosity, surface ...

  9. Tritium flow through a non-symmetrical source. Simulation of gas flow through an injection hole

    E-Print Network [OSTI]

    Sharipov, Felix

    Tritium flow through a non-symmetrical source. Simulation of gas flow through an injection hole of source in injection rarefaction parameter µ0 viscosity of tritium at T0 Pa s 2 #12;Ll = 5074.5 Lr = 5007

  10. Laser Sheet Light Flow Visualization For Evaluating Room Air Flows From

    E-Print Network [OSTI]

    LBNL-56483 Laser Sheet Light Flow Visualization For Evaluating Room Air Flows From Registers Iain S using a Planar Laser-Induced Fluorescence (PLIF) measurement technique. Water marked with fluorescent

  11. Site-Scale Saturated Zone Flow Model

    SciTech Connect (OSTI)

    G. Zyvoloski

    2003-12-17T23:59:59.000Z

    The purpose of this model report is to document the components of the site-scale saturated-zone flow model at Yucca Mountain, Nevada, in accordance with administrative procedure (AP)-SIII.lOQ, ''Models''. This report provides validation and confidence in the flow model that was developed for site recommendation (SR) and will be used to provide flow fields in support of the Total Systems Performance Assessment (TSPA) for the License Application. The output from this report provides the flow model used in the ''Site-Scale Saturated Zone Transport'', MDL-NBS-HS-000010 Rev 01 (BSC 2003 [162419]). The Site-Scale Saturated Zone Transport model then provides output to the SZ Transport Abstraction Model (BSC 2003 [164870]). In particular, the output from the SZ site-scale flow model is used to simulate the groundwater flow pathways and radionuclide transport to the accessible environment for use in the TSPA calculations. Since the development and calibration of the saturated-zone flow model, more data have been gathered for use in model validation and confidence building, including new water-level data from Nye County wells, single- and multiple-well hydraulic testing data, and new hydrochemistry data. In addition, a new hydrogeologic framework model (HFM), which incorporates Nye County wells lithology, also provides geologic data for corroboration and confidence in the flow model. The intended use of this work is to provide a flow model that generates flow fields to simulate radionuclide transport in saturated porous rock and alluvium under natural or forced gradient flow conditions. The flow model simulations are completed using the three-dimensional (3-D), finite-element, flow, heat, and transport computer code, FEHM Version (V) 2.20 (software tracking number (STN): 10086-2.20-00; LANL 2003 [161725]). Concurrently, process-level transport model and methodology for calculating radionuclide transport in the saturated zone at Yucca Mountain using FEHM V 2.20 are being carried out in the model report, ''Site-Scale Saturated Zone Transport'', MDL-NBS-HS-000010 Rev 01 (BSC 2003 [162419]). The velocity fields are calculated by the flow model, described herein, independent of the transport processes, and are then used as inputs to the transport model. Justification for this abstraction is presented in the model report, ''Saturated Zone Flow and Transport Model Abstraction'', MDL-NBS-HS-000021 (BSC 2003 [164870]).

  12. The effects between two slotted plate flow meter under single, two, three components flow condition

    E-Print Network [OSTI]

    Park, Sang Hyan

    2005-02-17T23:59:59.000Z

    THE INTERACTION BETWEEN A TWO SLOTTED PLATE FLOW METER UNDER ONE, TWO, OR THREE COMPONENT FLOW CONDITIONS A Thesis by SANG HYUN PARK Submitted to the Office of Graduate Studies of Texas A&M University in partial... fulfillment of the requirements for the degree of MASTER OF SCIENCE December 2004 Major Subject: Mechanical Engineering THE INTERACTION BETWEEN A TWO SLOTTED PLATE FLOW METER UNDER ONE, TWO, OR THREE COMPONENT FLOW...

  13. Evaluation of a slotted orifice plate flow meter using horizontal two phase flow

    E-Print Network [OSTI]

    Flores, Anita Elena

    2000-01-01T23:59:59.000Z

    EVALUATION OF A SLOTTED ORIFICE PLATE FLOW METER USING HORIZONTAL TWO PHASE FLOW A Thesis by ANITA ELENA FLORES Submitted to the Office of Graduate Studies of Texas ARM University in partial fulfillment of the requirements for the degree... of MASTER OF SCIENCE December 2000 Major Subject: Mechanical Engineering EVALUATION OF A SLOTTED ORIFICE PLATE FLOW METER USING HORIZONTAL TWO PHASE FLOW A Thesis by ANITA ELENA FLORES Submitted to Texas A&M University in partial fulfillment...

  14. 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.

  15. Solyndra Facts vs. Fiction: Cash Flow Modeling

    Broader source: Energy.gov [DOE]

    Questions have been raised about a quote selectively pulled from an Aug. 20, 2009 email to make it look like Solyndra would run out of cash by Sept. 2011. To be clear, the analysis addressed in that email did not refer to Solyndras corporate cash flow, but rather the cash flow for a subsidiary of Solyndra the Fab 2 Project Company.

  16. HYPERSONIC FLOW COMPUTATIONS ON UNSTRUCTURED MESHES

    E-Print Network [OSTI]

    Peraire, Jaime

    97--0625 HYPERSONIC FLOW COMPUTATIONS ON UNSTRUCTURED MESHES K. L. Bibb \\Lambda NASA Langley hypersonic flow over complex configurations using unstructured meshes is presented. The unstructured grid for a sphere­cone configuration at Mach numbers of 5.25 and 10.6, and a complex hypersonic re­entry vehicle

  17. Non-Darcy flow in geothermal reservoirs

    SciTech Connect (OSTI)

    Zyvoloski, G.

    1982-01-01T23:59:59.000Z

    The effects of non-Darcy flow laws are investigated for two geothermal reservoir types: multiphase and Hot Dry Rock (HDR). Long-term thermal behavior is emphasized as short-term pressure transient behavior is addressed in the oil field literature. Comparisons of Darcy and non-Darcy flow laws are made.

  18. Scaling bounds on dissipation in turbulent flows

    E-Print Network [OSTI]

    Seis, Christian

    2015-01-01T23:59:59.000Z

    We present a new rigorous method for estimating statistical quantities in fluid dynamics such as the (average) energy dissipation rate directly from the equations of motion. The method is tested on shear flow, channel flow, Rayleigh--B\\'enard convection and porous medium convection.

  19. Integrable magnetic geodesic flows on Lie groups

    E-Print Network [OSTI]

    Alexey A. Magazev; Igor V. Shirokov; Yuriy Y. Yurevich

    2011-11-03T23:59:59.000Z

    Right-invariant geodesic flows on manifolds of Lie groups associated with 2-cocycles of corresponding Lie algebras are discussed. Algebra of integrals of motion for magnetic geodesic flows is considered and necessary and sufficient condition of integrability in quadratures is formulated. Canonic forms for 2-cocycles of all 4-dimensional Lie algebras are given and integrable cases among them are separated.

  20. Conservation Law Models for Traffic Flow

    E-Print Network [OSTI]

    Bressan, Alberto

    Conservation Law Models for Traffic Flow Alberto Bressan Mathematics Department, Penn State University http://www.math.psu.edu/bressan/ Alberto Bressan (Penn State) Scalar Conservation Laws 1 / 117 #12;Review of hyperbolic conservation laws Models of traffic flow, on a single road and on a network of roads

  1. Flow Split Venturi, Axially-Rotated Valve

    SciTech Connect (OSTI)

    Walrath, David E. (Laramie, WY); Lindberg, William R. (Laramie, WY); Burgess, Robert K. (Sheridan, WY); LaBelle, James (Murrieta, CA)

    2000-02-22T23:59:59.000Z

    The present invention provides an axially-rotated valve which permits increased flow rates and lower pressure drop (characterized by a lower loss coefficient) by using an axial eccentric split venturi with two portions where at least one portion is rotatable with respect to the other portion. The axially-rotated valve typically may be designed to avoid flow separation and/or cavitation at full flow under a variety of conditions. Similarly, the valve is designed, in some embodiments, to produce streamlined flow within the valve. An axially aligned outlet may also increase the flow efficiency. A typical cross section of the eccentric split venturi may be non-axisymmetric such as a semicircular cross section which may assist in both throttling capabilities and in maximum flow capacity using the design of the present invention. Such a design can include applications for freeze resistant axially-rotated valves and may be fully-opened and fully-closed in one-half of a complete rotation. An internal wide radius elbow typically connected to a rotatable portion of the eccentric venturi may assist in directing flow with lower friction losses. A valve actuator may actuate in an axial manner yet be uniquely located outside of the axial flow path to further reduce friction losses. A seal may be used between the two portions that may include a peripheral and diametrical seal in the same plane. A seal separator may increase the useful life of the seal between the fixed and rotatable portions.

  2. DIFFERENTIAL EQUATIONS FOR FLOW IN RESERVOIRS By ...

    E-Print Network [OSTI]

    2008-08-23T23:59:59.000Z

    Darcy's law for each phase with a simple differential material balance for each phase. In this first ... that the pressure declines in the direction of flow. .... lies within some closed curve C across which there is no flow, and fluid injec- tion and...

  3. Quantitative supersonic flow visualization by hydraulic analogy

    E-Print Network [OSTI]

    Rani, Sarma Laxminarasimha

    1998-01-01T23:59:59.000Z

    The hydraulic analogy, which forms the basis for the phics. current investigation, can be used to study supersonic gas flows with great ease by means of a water table. As a result of the analogy, water heights in free surface water flow correspond...

  4. Geometric solitons of Hamiltonian flows on manifolds

    SciTech Connect (OSTI)

    Song, Chong, E-mail: songchong@xmu.edu.cn [School of Mathematical Sciences, Xiamen University, Xiamen 361005 (China)] [School of Mathematical Sciences, Xiamen University, Xiamen 361005 (China); Sun, Xiaowei, E-mail: sunxw@cufe.edu.cn [School of Applied Mathematics, Central University of Finance and Economics, Beijing 100081 (China)] [School of Applied Mathematics, Central University of Finance and Economics, Beijing 100081 (China); Wang, Youde, E-mail: wyd@math.ac.cn [Academy of Mathematics and Systems Science, Chinese Academy of Sciences, Beijing 100190 (China)] [Academy of Mathematics and Systems Science, Chinese Academy of Sciences, Beijing 100190 (China)

    2013-12-15T23:59:59.000Z

    It is well-known that the LIE (Locally Induction Equation) admit soliton-type solutions and same soliton solutions arise from different and apparently irrelevant physical models. By comparing the solitons of LIE and Killing magnetic geodesics, we observe that these solitons are essentially decided by two families of isometries of the domain and the target space, respectively. With this insight, we propose the new concept of geometric solitons of Hamiltonian flows on manifolds, such as geometric Schrdinger flows and KdV flows for maps. Moreover, we give several examples of geometric solitons of the Schrdinger flow and geometric KdV flow, including magnetic curves as geometric Schrdinger solitons and explicit geometric KdV solitons on surfaces of revolution.

  5. Flow through electrode with automated calibration

    DOE Patents [OSTI]

    Szecsody, James E [Richland, WA; Williams, Mark D [Richland, WA; Vermeul, Vince R [Richland, WA

    2002-08-20T23:59:59.000Z

    The present invention is an improved automated flow through electrode liquid monitoring system. The automated system has a sample inlet to a sample pump, a sample outlet from the sample pump to at least one flow through electrode with a waste port. At least one computer controls the sample pump and records data from the at least one flow through electrode for a liquid sample. The improvement relies upon (a) at least one source of a calibration sample connected to (b) an injection valve connected to said sample outlet and connected to said source, said injection valve further connected to said at least one flow through electrode, wherein said injection valve is controlled by said computer to select between said liquid sample or said calibration sample. Advantages include improved accuracy because of more frequent calibrations, no additional labor for calibration, no need to remove the flow through electrode(s), and minimal interruption of sampling.

  6. Rapidity Dependence of Elliptic Flow at RHIC

    E-Print Network [OSTI]

    Erik Johnson

    2006-01-04T23:59:59.000Z

    The measured elliptic flow (v2) of identified particles as a function of pT and centrality at RHIC suggests the created medium in Au+Au collisions achieves early local thermal equilibrium that is followed by hydrodynamic expansion. It is not known if the eta dependence on v2 is a general feature of elliptic flow or reflects other changes in the particle spectra in going from mid-rapidity to foward rapidities. The BRAHMS experiment provides a unique capability compared to the other RHIC experiments to measure v2 for identified particles over a wide rapidity range. From Run 4 Au+Au collision at sqrt{s_{NN}} = 200GeV, identified elliptic flow is studied using the BRAHMS spectrometers, which cover 0flow and to measure the pT-integrated flow for charged hadrons.

  7. Valve for controlling solids flow

    DOE Patents [OSTI]

    Feldman, David K. (Fairlawn, NJ)

    1980-01-01T23:59:59.000Z

    A fluidized solids control valve is disclosed that is particularly well adapted for use with a flow of coal or char that includes both large particles and fines. The particles may or may not be fluidized at various times during the operation. The valve includes a tubular body that terminates in a valve seat covered by a normally closed closure plate. The valve body at the seat and the closure plate is provided with aligned longitudinal slots that receive a pivotally supported key plate. The key plate is positionable by an operator in inserted, intermediate and retracted positions respecting the longitudinal slot in the valve body. The key plate normally closes the slot within the closure plate but is shaped and aligned obliquely to the longitudinal slot within the valve body to provide progressively increasing slot openings between the inserted and retracted positions. Transfer members are provided between the operator, key plate and closure plate to move the closure plate into an open position only when the key plate is retracted from the longitudinal slot within the valve body.

  8. Cross flow electrofilter and method

    DOE Patents [OSTI]

    Gidaspow, Dimitri (Northbrook, IL); Lee, Chang H. (Chicago, IL); Wasan, Darsh T. (Westmont, IL)

    1981-01-01T23:59:59.000Z

    A filter for clarifying carbonaceous liquids containing finely divided solid particles of, for instance, unreacted coal, ash and other solids discharged from a coal liquefaction process is presented. The filter includes two passageways separated by a porous filter medium. In one preferred embodiment the filter medium is of tubular shape to form the first passageway and is enclosed within an outer housing to form the second passageway within the annulus. An electrode disposed in the first passageway, for instance along the tube axis, is connected to a source of high voltage for establishing an electric field between the electrode and the filter medium. Slurry feed flows through the first passageway tangentially to the surfaces of the filter medium and the electrode. Particles from the feed slurry are attracted to the electrode within the first passageway to prevent plugging of the porous filter medium while carbonaceous liquid filters into the second passageway for withdrawal. Concentrated slurry is discharged from the first passageway at an end opposite to the feed slurry inlet. Means are also provided for the addition of diluent and a surfactant into the slurry to control relative permittivity and the electrophoretic mobility of the particles.

  9. Department of Chemical Engineering Thermal and Flow Engineering Laboratory

    E-Print Network [OSTI]

    Zevenhoven, Ron

    Aug.2013 Department of Chemical Engineering Thermal and Flow Engineering Laboratory Ron Zevenhoven.1 Fluid statics 6.2 Fluid dynamics: viscosity, laminar / turbulent flow, boundary layer 6.3 Fluid dynamics: internal flows / tube flows 6.4 Fluid dynamics: pressure drop & energy dissipation in tube systems 6.5 Flow

  10. Department of Chemical Engineering Thermal and Flow Engineering Laboratory

    E-Print Network [OSTI]

    Zevenhoven, Ron

    August 12 Department of Chemical Engineering Thermal and Flow Engineering Laboratory Ron Zevenhoven.1 Fluid statics 6.2 Fluid dynamics: viscosity, laminar / turbulent flow, boundary layer 6.3 Fluid dynamics: internal flows / tube flows 6.4 Fluid dynamics: pressure drop & energy dissipation in tube systems 6.5 Flow

  11. Classification of Two-Phase Flow Patterns by Ultrasonic Sensing

    E-Print Network [OSTI]

    Ray, Asok

    in addition to several other factors such as the bulk flow rate, fluid properties, and flow boundary conditions [1]. Characterization of flow patterns and identification of the associ- ated flow regimes instrumentation, both for void fraction identification and flow pattern classification. High-speed photog- raphy

  12. Microgravity flow pattern identification using void fraction signals

    E-Print Network [OSTI]

    Valota, Luca

    2005-08-29T23:59:59.000Z

    Knowledge of the two-phase flow state is fundamental for two-phase flow system design and operation. In traditional two-phase flow studies, the flow regime refers to the physical location of the gas and liquid in a conduit. Flow configuration...

  13. Online Supplement Appendix Flow Anatomy of the TCPC Pathways

    E-Print Network [OSTI]

    Pekkan, Kerem

    narrowings that dissipate little power at baseline flows may be sources of significant power loss at increased flows, 2) flow collision between SVC and IVC flows can be a significant source of power loss and usually increases significantly with increasing power loss, 3) increased skewing of the IVC flow toward

  14. Constraints on flow regimes in wide-aperture fractures

    SciTech Connect (OSTI)

    Ghezzehei, Teamrat A.

    2004-02-28T23:59:59.000Z

    In recent years, significant advances have been made in our understanding of the complex flow processes in individual fractures, aided by flow visualization experiments and conceptual modeling efforts. These advances have led to the recognition of several flow regimes in individual fractures subjected to different initial and boundary conditions. Of these, the most important regimes are film flow, rivulet flow, and sliding of droplets. The existence of such significantly dissimilar flow regimes has been a major hindrance in the development of self-consistent conceptual models of flow for single fractures that encompass all the flow regimes. The objective of this study is to delineate the existence of the different flow regimes in individual fractures. For steady-state flow conditions, we developed physical constraints on the different flow regimes that satisfy minimum energy configurations, which enabled us to segregate the wide range of fracture transmissivity (volumetric flow rate per fracture width) into several flow regimes. These are, in increasing order of flow rate, flow of adsorbed films, flow of sliding drops, rivulet flow, stable film flow, and unstable (turbulent) film flow. The scope of this study is limited to wide-aperture fractures with the flow on the opposing sides of fracture being independent.

  15. Assessment of Historic Trend in Mobility and Energy Use in India Transportation Sector Using Bottom-up Approach

    SciTech Connect (OSTI)

    Zhou, Nan; McNeil, Michael A.

    2009-05-01T23:59:59.000Z

    Transportation mobility in India has increased significantly in the past decades. From 1970 to 2000, motorized mobility (passenger-km) has risen by 888%, compared with an 88% population growth (Singh,2006). This contributed to many energy and environmental issues, and an energy strategy incorporates efficiency improvement and other measures needs to be designed. Unfortunately, existing energy data do not provide information on driving forces behind energy use and sometime show large inconsistencies. Many previous studies address only a single transportation mode such as passenger road travel; did not include comprehensive data collection or analysis has yet been done, or lack detail on energy demand by each mode and fuel mix. The current study will fill a considerable gap in current efforts, develop a data base on all transport modes including passenger air and water, and freight in order to facilitate the development of energy scenarios and assess significance of technology potential in a global climate change model. An extensive literature review and data collection has been done to establish the database with breakdown of mobility, intensity, distance, and fuel mix of all transportation modes. Energy consumption was estimated and compared with aggregated transport consumption reported in IEA India transportation energy data. Different scenarios were estimated based on different assumptions on freight road mobility. Based on the bottom-up analysis, we estimated that the energy consumption from 1990 to 2000 increased at an annual growth rate of 7% for the mid-range road freight growth case and 12% for the high road freight growth case corresponding to the scenarios in mobility, while the IEA data only shows a 1.7% growth rate in those years.

  16. Breakthrough Flow Battery Cell Stack: Transformative Electrochemical Flow Storage System (TEFSS)

    SciTech Connect (OSTI)

    None

    2010-09-09T23:59:59.000Z

    GRIDS Project: UTRC is developing a flow battery with a unique design that provides significantly more power than today's flow battery systems. A flow battery is a cross between a traditional battery and a fuel cell. Flow batteries store their energy in external tanks instead of inside the cell itself. Flow batteries have traditionally been expensive because the battery cell stack, where the chemical reaction takes place, is costly. In this project, UTRC is developing a new stack design that achieves 10 times higher power than todays flow batteries. This high power output means the size of the cell stack can be smaller, reducing the amount of expensive materials that are needed. UTRCs flow battery will reduce the cost of storing electricity for the electric grid, making widespread use feasible.

  17. Flow Partitioning in Fully Saturated Soil Aggregates

    SciTech Connect (OSTI)

    Yang, Xiaofan; Richmond, Marshall C.; Scheibe, Timothy D.; Perkins, William A.; Resat, Haluk

    2014-03-30T23:59:59.000Z

    Microbes play an important role in facilitating organic matter decomposition in soils, which is a major component of the global carbon cycle. Microbial dynamics are intimately coupled to environmental transport processes, which control access to labile organic matter and other nutrients that are needed for the growth and maintenance of microorganisms. Transport of soluble nutrients in the soil system is arguably most strongly impacted by preferential flow pathways in the soil. Since the physical structure of soils can be characterized as being formed from constituent micro aggregates which contain internal porosity, one pressing question is the partitioning of the flow among the inter-aggregate and intra-aggregate pores and how this may impact overall solute transport within heterogeneous soil structures. The answer to this question is particularly important in evaluating assumptions to be used in developing upscaled simulations based on highly-resolved mechanistic models. We constructed a number of diverse multi-aggregate structures with different packing ratios by stacking micro-aggregates containing internal pores and varying the size and shape of inter-aggregate pore spacing between them. We then performed pore-scale flow simulations using computational fluid dynamics methods to determine the flow patterns in these aggregate-of-aggregates structures and computed the partitioning of the flow through intra- and inter-aggregate pores as a function of the spacing between the aggregates. The results of these numerical experiments demonstrate that soluble nutrients are largely transported via flows through inter-aggregate pores. Although this result is consistent with intuition, we have also been able to quantify the relative flow capacity of the two domains under various conditions. For example, in our simulations, the flow capacity through the aggregates (intra-aggregate flow) was less than 2% of the total flow when the spacing between the aggregates was larger than 18 micron. Inter-aggregate pores continued to be the dominant flow pathways even at much smaller spacing; intra-aggregate flow was less than 10% of the total flow when the inter- and intra-aggregate pore sizes were comparable. Such studies are making it possible to identify which model upscaling assumptions are realistic and what computational methods are required for detailed numerical investigation of microbial carbon cycling dynamics in soil systems.

  18. Quantitative tomographic measurements of opaque multiphase flows

    SciTech Connect (OSTI)

    GEORGE,DARIN L.; TORCZYNSKI,JOHN R.; SHOLLENBERGER,KIM ANN; O'HERN,TIMOTHY J.; CECCIO,STEVEN L.

    2000-03-01T23:59:59.000Z

    An electrical-impedance tomography (EIT) system has been developed for quantitative measurements of radial phase distribution profiles in two-phase and three-phase vertical column flows. The EIT system is described along with the computer algorithm used for reconstructing phase volume fraction profiles. EIT measurements were validated by comparison with a gamma-densitometry tomography (GDT) system. The EIT system was used to accurately measure average solid volume fractions up to 0.05 in solid-liquid flows, and radial gas volume fraction profiles in gas-liquid flows with gas volume fractions up to 0.15. In both flows, average phase volume fractions and radial volume fraction profiles from GDT and EIT were in good agreement. A minor modification to the formula used to relate conductivity data to phase volume fractions was found to improve agreement between the methods. GDT and EIT were then applied together to simultaneously measure the solid, liquid, and gas radial distributions within several vertical three-phase flows. For average solid volume fractions up to 0.30, the gas distribution for each gas flow rate was approximately independent of the amount of solids in the column. Measurements made with this EIT system demonstrate that EIT may be used successfully for noninvasive, quantitative measurements of dispersed multiphase flows.

  19. Fluid flow control with transformation media

    E-Print Network [OSTI]

    Urzhumov, Yaroslav A

    2011-01-01T23:59:59.000Z

    We introduce a new concept for the manipulation of fluid flow around three-dimensional bodies. Inspired by transformation optics, the concept is based on a mathematical idea of coordinate transformations, and physically implemented with anisotropic porous media permeable to the flow of fluids. In two different situations - for an impermeable object situated either in a free-flowing fluid or in a fluid-filled porous medium - we show that the object can be coated with a properly chosen inhomogeneous, anisotropic permeable medium, such as to preserve the streamlines of flow and the pressure distribution that would have existed in the absence of the object. The proposed fluid flow cloak completely eliminates any disturbance of the flow by the object, including the downstream wake. Consequently, the structure helps prevent the onset of turbulence by keeping the flow laminar even above the typical critical Reynolds number for the object of the same shape and size. The cloak also cancels the viscous drag force. This...

  20. Annular flow control safety valve

    SciTech Connect (OSTI)

    Black, P.W.; Pringle, R.E.

    1981-06-16T23:59:59.000Z

    A tubular housing having an inner tubular member forms an inner passageway inside of the inner member and an outer passageway between the inner member and the housing. The housing has valve openings leading from the outer passageway to the exterior of the housing and a tubular valve closure member telescopically moves on the interior of the housing. First means move the valve closure member in an upper direction for closing the openings and at least one actuating piston is telescopically movable within and has its longitudinal axis in the wall of the housing and engages the valve closure member. The piston is in communication with a hydraulic passageway adapted to extend to the well surface for actuating the closure member in a direction to open the valve openings. The closure member is positioned whereby upward flow through the outer passageway acts on the closure member to close the valve opening. At least one lockout piston telescopically moves within the housing and is actuated from the surface and is engageable with holding means in the housing for providing a hydraulic lockout for the valve. Shear means may be provided between the lockout piston and the housing for controlling the hydraulic lockout. A single seal is provided between the closure member and the housing and is positioned below the opening and exposed to the pressure on both sides when the valve is opened. Preferably the actuating pistons are connected to the valve closure member but the hydraulic lockout pistons engage but are unconnected to the valve closure member.

  1. A study of flow in transition pieces

    E-Print Network [OSTI]

    Kochan, Thomas Walter

    1976-01-01T23:59:59.000Z

    . , Mummalog F J g "Boundary Layer Induced Potential Flow on an Elliptical Cylinder, " Journal of Fluid Mechanics, Vol. 66, Part 1, 1974, pp. 145-157. 3 Glassman, A. J. , "Turbine Design and Application, " NASA Report No. SP-290, Vol. 2, 1973. 4 Schlichting... piece to be used and often acts as the prime design consideration, as the transition piece has the primary purpose of routing the flow. See Figures 1 and 2. The method of flow routing in a transition piece can in- troduce losses in the system...

  2. Momentum spectra, anisotropic flow, and ideal fluids

    E-Print Network [OSTI]

    N. Borghini; J. -Y. Ollitrault

    2006-07-28T23:59:59.000Z

    If the matter produced in ultrarelativistic heavy-ion collisions reaches thermal equilibrium, its subsequent evolution follows the laws of ideal fluid dynamics. We show that general predictions can be made on this basis alone, irrespective of the details of the hydrodynamical model. We derive several scaling rules for momentum spectra and anisotropic flow (in particular the elliptic flow, v2, and the hexadecupole flow, v4) of identified particles. Comparison with existing data is briefly discussed, and qualitative predictions are made for LHC.

  3. Redox Flow Batteries: An Engineering Perspective

    SciTech Connect (OSTI)

    Chalamala, Babu R.; Soundappan, Thiagarajan; Fisher, Graham R.; Anstey, Mitchell A.; Viswanathan, Vilayanur V.; Perry, Mike L.

    2014-10-01T23:59:59.000Z

    Redox flow batteries are well suited to provide modular and scalable energy storage systems for a wide range of energy storage applications. In this paper, we review the development of redox flow battery technology including recent advances in new redox active materials and systems. We discuss cost, performance, and reliability metrics that are critical for deployment of large flow battery systems. The technology, while relatively young, has the potential for significant improvement through reduced materials costs, improved energy and power efficiency, and significant reduction in the overall system cost.

  4. Mass Dependence of Directed Collective Flow

    SciTech Connect (OSTI)

    Huang, M.J.; Lemmon, R.C.; Daffin, F.; Lynch, W.G.; Schwarz, C.; Tsang, M.B.; Williams, C.; Danielewicz, P.; Haglin, K.; Bauer, W.; Carlin, N.; Charity, R.J.; de Souza, R.T.; Gelbke, C.K.; Hsi, W.C.; Kunde, G.J.; Lemaire, M.; Lisa, M.A.; Lynen, U.; Peaslee, G.F.; Pochodzalla, J.; Sann, H.; Sobotka, L.G.; Souza, S.R.; Trautmann, W. [National Superconducting Cyclotron Laboratory and Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824 (United States)] [National Superconducting Cyclotron Laboratory and Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824 (United States); [Laboratoire National SATURNE, CEN Saclay, 91191 Gif-sur-Yvette Cedex (France); [Department of Chemistry, Washington University, St. Louis, Missouri 63130 (United States); [Gesellschaft fuer Schwerionenforschung, D-6100 Darmstadt 11 (Germany); [Indiana University Cyclotron Facility and Department of Chemistry, Indiana University, Bloomington, Indiana 47405 (United States); [Instituto de Fisica, Universidade de Sao Paulo, CEP 01498, Sao Paulo (Brazil)

    1996-10-01T23:59:59.000Z

    Sidewards directed fragment flow has been extracted for {sup 84}Kr+{sup 197}Au collisions at {ital E}/{ital A}=200 MeV, using techniques that are free of reaction plane dispersion. The fragment flow per nucleon increases with mass, following a thermal or coalescencelike behavior, and attains roughly constant limiting values at 4{le}{ital A}{le}12. Comparisons of the impact parameter dependences of the measured coalescence-invariant proton flow to Boltzmann-Uehling-Uhlenbeck calculations clearly favor a momentum dependent nuclear mean field. {copyright} {ital 1996 The American Physical Society.}

  5. Large volume flow-through scintillating detector

    DOE Patents [OSTI]

    Gritzo, Russ E. (Los Alamos, NM); Fowler, Malcolm M. (Los Alamos, NM)

    1995-01-01T23:59:59.000Z

    A large volume flow through radiation detector for use in large air flow situations such as incinerator stacks or building air systems comprises a plurality of flat plates made of a scintillating material arranged parallel to the air flow. Each scintillating plate has a light guide attached which transfers light generated inside the scintillating plate to an associated photomultiplier tube. The output of the photomultiplier tubes are connected to electronics which can record any radiation and provide an alarm if appropriate for the application.

  6. Multiphase Flow and Cavern Abandonment in Salt

    SciTech Connect (OSTI)

    Ehgartner, Brian; Tidwell, Vince

    2001-02-13T23:59:59.000Z

    This report will explore the hypothesis that an underground cavity in gassy salt will eventually be gas filled as is observed on a small scale in some naturally occurring salt inclusions. First, a summary is presented on what is known about gas occurrences, flow mechanisms, and cavern behavior after abandonment. Then, background information is synthesized into theory on how gas can fill a cavern and simultaneously displace cavern fluids into the surrounding salt. Lastly, two-phase (gas and brine) flow visualization experiments are presented that demonstrate some of the associated flow mechanisms and support the theory and hypothesis that a cavity in salt can become gas filled after plugging and abandonment

  7. Ionization based multi-directional flow sensor

    DOE Patents [OSTI]

    Chorpening, Benjamin T. (Morgantown, WV); Casleton, Kent H. (Morgantown, WV)

    2009-04-28T23:59:59.000Z

    A method, system, and apparatus for conducting real-time monitoring of flow (airflow for example) in a system (a hybrid power generation system for example) is disclosed. The method, system and apparatus measure at least flow direction and velocity with minimal pressure drop and fast response. The apparatus comprises an ion source and a multi-directional collection device proximate the ion source. The ion source is configured to generate charged species (electrons and ions for example). The multi-directional collection source is configured to determine the direction and velocity of the flow in real-time.

  8. Ultrasonic flow imaging system: A feasibility study

    SciTech Connect (OSTI)

    Sheen, S.H.; Lawrence, W.P.; Chien, H.T.; Raptis, A.C.

    1991-09-01T23:59:59.000Z

    This report examines the feasibility and potential problems in developing a real-time ultrasonic flow imaging instrument for on-line monitoring of mixed-phased flows such as coal slurries. State-of-the-art ultrasonic imaging techniques are assessed for this application. Reflection and diffraction tomographies are proposed for further development, including image-reconstruction algorithms and parallel processing systems. A conventional ultrasonic C-scan technique is used to demonstrate the feasibility of imaging the particle motion in a solid/water flow. 13 refs., 11 figs.

  9. Geologic flow characterization using tracer techniques

    SciTech Connect (OSTI)

    Klett, R. D.; Tyner, C. E.; Hertel, Jr., E. S.

    1981-04-01T23:59:59.000Z

    A new tracer flow-test system has been developed for in situ characterization of geologic formations. This report describes two sets of test equipment: one portable and one for testing in deep formations. Equations are derived for in situ detector calibration, raw data reduction, and flow logging. Data analysis techniques are presented for computing porosity and permeability in unconfined isotropic media, and porosity, permeability and fracture characteristics in media with confined or unconfined two-dimensional flow. The effects of tracer pulse spreading due to divergence, dispersion, and porous formations are also included.

  10. Hydraulic and slurry flows through a channel contraction

    E-Print Network [OSTI]

    Al Hanbali, Ahmad

    Hydraulic and slurry flows through a channel contraction Onno Bokhove o, Twente #12;Hydraulic flow through channel contraction Outline 1. Introduction 2. Experiments 3. Conclusions References ISSF 2008 University of Twente Page 2 #12;Hydraulic flow through channel contraction

  11. A bulk-flow model of angled injection Lomakin bearings

    E-Print Network [OSTI]

    Soulas, Thomas Antoine Theo

    2001-01-01T23:59:59.000Z

    A bulk-flow model for determination of the leakage and dynamic force characteristics of angled injection Lomakin bearings is presented. Zeroth- and first-order equations describe the equilibrium flow for a centered bearing and the perturbed flow...

  12. Dryout droplet distribution and dispersed flow film boiling

    E-Print Network [OSTI]

    Hill, Wayne S.

    1982-01-01T23:59:59.000Z

    Dispersed flow film boiling is characterized by liquid-phase droplets entrained in a continuous vapor-phase flow. In a previous work at MIT, a model of dispersed flow heat transfer was developed, called the Local Conditions ...

  13. Control of emulsion drop production in flow focusing microfluidics

    E-Print Network [OSTI]

    Kim, Haejune

    2009-05-15T23:59:59.000Z

    Generating droplets using flow-focusing microfluidics in multiphase flows has reached its limit that it cannot generate submicrometer droplets in size. Flow focusing geometry together with an electric field has been used to make smaller droplets...

  14. Cross-flow electrochemical reactor cells, cross-flow reactors, and use of cross-flow reactors for oxidation reactions

    DOE Patents [OSTI]

    Balachandran, Uthamalingam (Hinsdale, IL); Poeppel, Roger B. (Glen Ellyn, IL); Kleefisch, Mark S. (Naperville, IL); Kobylinski, Thaddeus P. (Lisle, IL); Udovich, Carl A. (Joliet, IL)

    1994-01-01T23:59:59.000Z

    This invention discloses cross-flow electrochemical reactor cells containing oxygen permeable materials which have both electron conductivity and oxygen ion conductivity, cross-flow reactors, and electrochemical processes using cross-flow reactor cells having oxygen permeable monolithic cores to control and facilitate transport of oxygen from an oxygen-containing gas stream to oxidation reactions of organic compounds in another gas stream. These cross-flow electrochemical reactors comprise a hollow ceramic blade positioned across a gas stream flow or a stack of crossed hollow ceramic blades containing a channel or channels for flow of gas streams. Each channel has at least one channel wall disposed between a channel and a portion of an outer surface of the ceramic blade, or a common wall with adjacent blades in a stack comprising a gas-impervious mixed metal oxide material of a perovskite structure having electron conductivity and oxygen ion conductivity. The invention includes reactors comprising first and second zones seprated by gas-impervious mixed metal oxide material material having electron conductivity and oxygen ion conductivity. Prefered gas-impervious materials comprise at least one mixed metal oxide having a perovskite structure or perovskite-like structure. The invention includes, also, oxidation processes controlled by using these electrochemical reactors, and these reactions do not require an external source of electrical potential or any external electric circuit for oxidation to proceed.

  15. Multiphase flow in fractured porous media

    SciTech Connect (OSTI)

    Firoozabadi, A.

    1995-02-01T23:59:59.000Z

    The major goal of this research project was to improve the understanding of the gas-oil two-phase flow in fractured porous media. In addition, miscible displacement was studied to evaluate its promise for enhanced recovery.

  16. Pressure balanced drag turbine mass flow meter

    DOE Patents [OSTI]

    Dacus, M.W.; Cole, J.H.

    1980-04-23T23:59:59.000Z

    The density of the fluid flowing through a tubular member may be measured by a device comprising a rotor assembly suspended within the tubular member, a fluid bearing medium for the rotor assembly shaft, independent fluid flow lines to each bearing chamber, and a scheme for detection of any difference between the upstream and downstream bearing fluid pressures. The rotor assembly reacts to fluid flow both by rotation and axial displacement; therefore concurrent measurements may be made of the velocity of blade rotation and also bearing pressure changes, where the pressure changes may be equated to the fluid momentum flux imparted to the rotor blades. From these parameters the flow velocity and density of the fluid may be deduced.

  17. Pressure balanced drag turbine mass flow meter

    DOE Patents [OSTI]

    Dacus, Michael W. (Gilbert, AR); Cole, Jack H. (Fayetteville, AR)

    1982-01-01T23:59:59.000Z

    The density of the fluid flowing through a tubular member may be measured by a device comprising a rotor assembly suspended within the tubular member, a fluid bearing medium for the rotor assembly shaft, independent fluid flow lines to each bearing chamber, and a scheme for detection of any difference between the upstream and downstream bearing fluid pressures. The rotor assembly reacts to fluid flow both by rotation and axial displacement; therefore concurrent measurements may be made of the velocity of blade rotation and also bearing pressure changes, where the pressure changes may be equated to the fluid momentum flux imparted to the rotor blades. From these parameters the flow velocity and density of the fluid may be deduced.

  18. Certification of flow monitors for utility boilers

    SciTech Connect (OSTI)

    Bensink, J.; Beachler, D.; Joseph, J.

    1995-12-31T23:59:59.000Z

    The use of CEMS for measuring opacity, SO{sub 2}, NO{sub x}, CO{sub 2}, and O{sub 2} concentration was well proven prior to implementing the Part 75 CEMS program. However, the use of continuous flue gas flow monitoring devices is a relatively new instrumental technique. Limited operating data for flow monitors were available and little or no certification relative accuracy data were available prior to the Summer of 1993. However, because of the Part 75 requirements, utility companies contracted with CEMS vendors to install, start-up and certify flow monitors on Phase 1 and Phase 2 units. This paper presents the certification history of three different types of flow monitors (ultrasonic, pressure differential ({Delta}p) and thermal) installed at various utilities in the US. The data and experience was obtained from approximately 100 Phase 1 CEMS units and 200 Phase 1 CEMS units.

  19. Multiscale CFD simulations of entrained flow gasification

    E-Print Network [OSTI]

    Kumar, Mayank, Ph. D. Massachusetts Institute of Technology

    2011-01-01T23:59:59.000Z

    The design of entrained flow gasifiers and their operation has largely been an experience based enterprise. Most, if not all, industrial scale gasifiers were designed before it was practical to apply CFD models. Moreover, ...

  20. Sandia National Laboratories: PMTF Flow Loop

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

    EBTS and EB-1200 vacuum chambers, and is used for infrared thermography in separate hotcold transient tests that assess the quality of brazed joints. The flow loop gives the...

  1. High energy density redox flow device

    DOE Patents [OSTI]

    Chiang, Yet-Ming; Carter, W. Craig; Ho, Bryan Y; Duduta, Mihai; Limthongkul, Pimpa

    2014-05-13T23:59:59.000Z

    Redox flow devices are described in which at least one of the positive electrode or negative electrode-active materials is a semi-solid or is a condensed ion-storing electroactive material, and in which at least one of the electrode-active materials is transported to and from an assembly at which the electrochemical reaction occurs, producing electrical energy. The electronic conductivity of the semi-solid is increased by the addition of conductive particles to suspensions and/or via the surface modification of the solid in semi-solids (e.g., by coating the solid with a more electron conductive coating material to increase the power of the device). High energy density and high power redox flow devices are disclosed. The redox flow devices described herein can also include one or more inventive design features. In addition, inventive chemistries for use in redox flow devices are also described.

  2. Historical river flow rates for dose calculations

    SciTech Connect (OSTI)

    Carlton, W.H.

    1991-06-10T23:59:59.000Z

    Annual average river flow rates are required input to the LADTAP Computer Code for calculating offsite doses from liquid releases of radioactive materials to the Savannah River. The source of information on annual river flow rates used in dose calculations varies, depending on whether calculations are for retrospective releases or prospective releases. Examples of these types of releases are: Retrospective - releases from routine operations (annual environmental reports) and short term release incidents that have occurred. Prospective - releases that might be expected in the future from routine or abnormal operation of existing or new facilities (EIS`s, EID`S, SAR`S, etc.). This memorandum provides historical flow rates at the downstream gauging station at Highway 301 for use in retrospective dose calculations and derives flow rate data for the Beaufort-Jasper and Port Wentworth water treatment plants.

  3. Stratified Shear Flow: Instability and Wave Radiation

    E-Print Network [OSTI]

    Sutherland, Bruce

    Stratified Shear Flow: Instability and Wave Radiation B. R. Sutherland Dept. Mathematical of internal waves in the atmosphere and ocean, but the evolution of the shear layer itself is significantly

  4. Accurate solution algorithms for incompressible multiphase flows

    SciTech Connect (OSTI)

    Rider, W.J.; Kothe, D.B.; Mosso, S.J.; Cerutti, J.H. [Los Alamos National Lab., NM (United States); Hochstein, J.I. [Memphis State Univ., TN (United States). Dept. of Mechanical Engineering

    1994-10-19T23:59:59.000Z

    A number of advances in modeling multiphase incompressible flow are described. These advances include high-order Godunov projection methods, piecewise linear interface reconstruction and tracking and the continuum surface force model. Examples are given.

  5. Two-phase flow in horizontal wells

    SciTech Connect (OSTI)

    Ihara, Masaru [Japan National Oil Corp., Chiba (Japan); Yanai, Koji [Nippon Kokan Corp., Yokohama (Japan); Yanai, Koji

    1995-11-01T23:59:59.000Z

    Flow in horizontal wells and two-phase flow interaction with the reservoir were investigated experimentally and theoretically. Two-phase flow behavior has been recognized as one of the most important problems in production engineering. The authors designed and constructed a new test facility suitable for acquiring data on the relationship between pressure drop and liquid holdup along the well and fluid influx from the reservoir. For the theoretical work, an initial model was proposed to describe the flow behavior in a horizontal well configuration. The model uses the inflow-performance-relationship (IPR) approach and empirical correlations or mechanistic models for wellbore hydraulics. Although good agreement was found between the model and experimental data, a new IPR apart from the extension of Darcy`s law must be investigated extensively to aid in the proper design of horizontal wells.

  6. Flow mapping for an ESS horizontal target

    SciTech Connect (OSTI)

    Takeda, Y.; Kikura, H.; Taishi, T. [Paul Scherrer Institute, Villigen (Switzerland)

    1997-12-01T23:59:59.000Z

    In the target of the European spallation neutron source (ESS), the beam line is horizontal and the mercury is fully forced by a pump in a parallel channel geometry. The top front of the assembly is a hemicylindrical wall, where the beam enters and is thus called a window. The main body is partitioned by a horizontal separation plate into the upper and the lower flow channels. The target liquid flows in the lower channel to the window region, turns there, and flows out in the upper channel. A thermal-hydraulic study is under way to investigate the general behavior of the flow in this configuration. The present experimental work is the first step of an effort to validate computer codes. The model used in this investigation is two-dimensional and uses water.

  7. Magnetic Geodesic Flows on Coadjoint Orbits

    E-Print Network [OSTI]

    Alexey V. Bolsinov; Bozidar Jovanovic

    2006-04-03T23:59:59.000Z

    We describe a class of completely integrable $G$-invariant magnetic geodesic flows on (co)adjoint orbits of a compact connected Lie group $G$ with magnetic field given by the Kirillov-Konstant 2-form.

  8. Membrane-less hydrogen bromine flow battery

    E-Print Network [OSTI]

    Braff, William A.

    In order for the widely discussed benefits of flow batteries for electrochemical energy storage to be applied at large scale, the cost of the electrochemical stack must come down substantially. One promising avenue for ...

  9. Saturation of elliptic flow and shear viscosity

    E-Print Network [OSTI]

    A. K. Chaudhuri

    2007-10-08T23:59:59.000Z

    Effect of shear viscosity on elliptic flow is studied in causal dissipative hydrodynamics in 2+1 dimensions. Elliptic flow is reduced in viscous dynamics. Causal evolution of minimally viscous fluid ($\\eta/s$=0.08), can explain the PHENIX data on elliptic flow in 16-23% Au+Au collisions up to $p_T\\approx$3.6 GeV. In contrast, ideal hydrodynamics, can explain the same data only up to $p_T\\approx$1.5 GeV. $p_T$ spectra of identified particles are also better explained in minimally viscous fluid than in ideal dynamics. However, saturation of elliptic flow at large $p_T$ is not reproduced.

  10. Esmaeil Jahanshahi Control Solutions for Multiphase Flow

    E-Print Network [OSTI]

    Skogestad, Sigurd

    -8181 Doctoral theses at NTNU, 2013:271 Printed by Skipnes #12;SUMMARY Severe-slugging flow in offshore systems are not robust against plant changes and inflow disturbances. The closed-loop system becomes

  11. Flow reversal power limit for the HFBR

    SciTech Connect (OSTI)

    Cheng, Lap Y.; Tichler, P.R.

    1995-10-01T23:59:59.000Z

    The High Flux Beam Reactor (HFBR) undergoes a buoyancy-driven reversal of flow in the reactor core following certain postulated accidents. Uncertainties about the afterheat removal capability during the flow reversal has limited the reactor operating power to 30 MW. An experimental and analytical program to address these uncertainties is described in this report. The experiments were single channel flow reversal tests under a range of conditions. The analytical phase involved simulations of the tests to benchmark the physical models and development of a criterion for dryout. The criterion is then used in simulations of reactor accidents to determine a safe operating power level. It is concluded that the limit on the HFBR operating power with respect to the issue of flow reversal is in excess of 60 MW.

  12. Improving application security with data flow assertions

    E-Print Network [OSTI]

    Yip, Alexander

    Resin is a new language runtime that helps prevent security vulnerabilities, by allowing programmers to specify application-level data flow assertions. Resin provides policy objects, which programmers use to specify assertion ...

  13. Method and apparatus for controlling fluid flow

    DOE Patents [OSTI]

    Miller, J.R.

    1980-06-27T23:59:59.000Z

    A method and apparatus for precisely controlling the rate (and hence amount) of fluid flow are given. The controlled flow rate is finely adjustable, can be extremely small (on the order of microliter-atmospheres per second), can be adjusted to zero (flow stopped), and is stable to better than 1% with time. The dead volume of the valve can be made arbitrarily small, in fact essentially zero. The valve employs no wearing mechanical parts (including springs, stems, or seals). The valve is finely adjustable, has a flow rate dynamic range of many decades, can be made compatible with any fluid, and is suitable for incorporation into an open or closed loop servo-control system.

  14. Adiabatic thermal Child-Langmuir flow

    E-Print Network [OSTI]

    Mok, Rachel V. (Rachel Verla)

    2013-01-01T23:59:59.000Z

    A simulation model is presented for the verification of the recently developed steady-state one-dimensional adiabatic thermal Child-Langmuir flow theory. In this theory, a self-consistent Poisson equation is developed ...

  15. Multiphase fluid flow and time lapse seismics

    E-Print Network [OSTI]

    santos

    Time-lapse seismic surveys aim to monitor the migration and dispersal of the CO2 ... of CO2-brine flow and seismic wave propagation to model and monitor CO2...

  16. Flow separation control with rotating cylinders

    E-Print Network [OSTI]

    Schulmeister, James Crandall

    2012-01-01T23:59:59.000Z

    The hydrodynamic forces on ocean vehicles increase dramatically during sharp maneuvers as compared to forward motion due to large areas of separated flow. These large forces severely limit maneuverability and reduce ...

  17. Generalized correlation for foam flow in tubes

    E-Print Network [OSTI]

    Cotter, Carol Lynnette

    1996-01-01T23:59:59.000Z

    . Data collected allow for the determination of material parameters. The corresponding friction factors and generalized Reynolds numbers are calculated and their relationship examined. Results indicate that the flow of foam follows the same f = 16/NRe,gen...

  18. Ceramic Cross Flow Recuperator Design Parameters

    E-Print Network [OSTI]

    Gonzalez, J. M.; Rebello, W. J.

    1981-01-01T23:59:59.000Z

    GTE Products Corporation has developed a compact ceramic cross flow recuperator for high temperature industrial heat recovery applications. They recently completed a jointly funded project with the DOE, (Contract #EX-76-C-0 1-2162) to demonstrate...

  19. Instabilities of Advection-Dominated Accretion Flows

    E-Print Network [OSTI]

    Xingming Chen

    1996-01-22T23:59:59.000Z

    Accretion disk instabilities are briefly reviewed. Some details are given to the short-wavelength thermal instabilities and the convective instabilities. Time-dependent calculations of two-dimensional advection-dominated accretion flows are presented.

  20. Catalyst immobilization techniques for continuous flow synthesis

    E-Print Network [OSTI]

    Nagy, Kevin David

    2012-01-01T23:59:59.000Z

    Catalytic processes are ubiquitous in both research and industrial settings. As continuous flow processes continue to gain traction in research labs and fine and pharmaceutical chemical processes, new opportunities exist ...

  1. Magnetic Amplifier for Power Flow Control

    SciTech Connect (OSTI)

    None

    2012-02-24T23:59:59.000Z

    GENI Project: ORNL is developing an electromagnet-based, amplifier-like device that will allow for complete control over the flow of power within the electric grid. To date, complete control of power flow within the grid has been prohibitively expensive. ORNLs controller could provide a reliable, cost-effective solution to this problem. The team is combining two types of pre-existing technologies to assist in flow control, culminating in a prototype iron-based magnetic amplifier. Ordinarily, such a device would require expensive superconductive wire, but the magnetic iron core of ORNLs device could serve as a low-cost alternative that is equally adept at regulating power flow.

  2. Micro free-flow isoelectric focusing

    E-Print Network [OSTI]

    Albrecht, Jacob William

    2008-01-01T23:59:59.000Z

    To unravel the complexity of cellular systems, protein prefractionation tools can be used to reduce cell lysate complexity and increase assay sensitivity. Rapid free flow isoelectric focusing (FF-IEF) is achieved in a ...

  3. Instream Flow Legislation Sandra B. Zellmer,1

    E-Print Network [OSTI]

    Nebraska-Lincoln, University of

    flows are protected. Examples include ecotourism on the central Platte for birdwatching; ecotourism on the Niobrara for canoeing and tubing; and ecotourism on the Missouri from boating and other recreational uses.7

  4. Fluid Flow Simulation in Fractured Reservoirs

    E-Print Network [OSTI]

    Sarkar, Sudipta

    2002-01-01T23:59:59.000Z

    The purpose of this study is to analyze fluid flow in fractured reservoirs. In most petroleum reservoirs, particularly carbonate reservoirs and some tight sands, natural fractures play a critical role in controlling fluid ...

  5. Shearing Flows in Liquid Crystal Models

    E-Print Network [OSTI]

    Dorn, Timothy

    2012-05-31T23:59:59.000Z

    The liquid crystal phase is a phase of matter between the solid and liquid phase whose flow is characterized by a velocity field and a director field which describes locally the orientation of the liquid crystal. In this ...

  6. High Fidelity Simulation of Complex Suspension Flow for Practical...

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

    designs of concrete are developed to meet these needs, it is important to measure and control flow properties to satisfy performance specifications. Failure to control the flow...

  7. Integrated Lateral Flow Test Strip with Electrochemical Sensor...

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

    Lateral Flow Test Strip with Electrochemical Sensor for Quantification of Phosphorylated Cholinesterase: Biomarker of Integrated Lateral Flow Test Strip with Electrochemical Sensor...

  8. Application of Neutron Imaging and Scattering to Fluid Flow and...

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

    Application of Neutron Imaging and Scattering to Fluid Flow and Fracture in EGS Environments Application of Neutron Imaging and Scattering to Fluid Flow and Fracture in EGS...

  9. Heat Flow Database Expansion for NGDS Data Development, Collection...

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

    Heat Flow Database Expansion for NGDS Data Development, Collection and Maintenance (SMU) Heat Flow Database Expansion for NGDS Data Development, Collection and Maintenance (SMU)...

  10. Fracture Network and Fluid Flow Imaging for EGS Applications...

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

    Fracture Network and Fluid Flow Imaging for EGS Applications from Multi-Dimensional Electrical Resistivity Structure Fracture Network and Fluid Flow Imaging for EGS Applications...

  11. Modeling Fluid Flow in Natural Systems, Model Validation and...

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

    rock, flow is primarily in relatively sparse networks of fractures. Discrete fracture network (DFNs) models are an approach to representing flow in fractured rock that...

  12. Advanced Turbulence Measurements and Signal Processing for Hydropower Flow Characterization

    E-Print Network [OSTI]

    Advanced Turbulence Measurements and Signal Processing for Hydropower Flow Characterization and flow characterization within full scale conventional hydropower systems, at marine and hydrokinetic

  13. Control Strategies for Centrifugal Pumps with Variable Flow Rate...

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

    Control Strategies for Centrifugal Pumps with Variable Flow Rate Requirements Control Strategies for Centrifugal Pumps with Variable Flow Rate Requirements This tip sheet discusses...

  14. A model for transonic plasma flow

    SciTech Connect (OSTI)

    Guazzotto, Luca, E-mail: luca.guazzotto@rochester.edu [Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623 (United States)] [Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623 (United States); Hameiri, Eliezer, E-mail: hameiri@cims.nyu.edu [Courant Institute of Mathematical Sciences, New York University, New York, New York 10012 (United States)] [Courant Institute of Mathematical Sciences, New York University, New York, New York 10012 (United States)

    2014-02-15T23:59:59.000Z

    A linear, two-dimensional model of a transonic plasma flow in equilibrium is constructed and given an explicit solution in the form of a complex Laplace integral. The solution indicates that the transonic state can be solved as an elliptic boundary value problem, as is done in the numerical code FLOW [Guazzotto et al., Phys. Plasmas 11, 604 (2004)]. Moreover, the presence of a hyperbolic region does not necessarily imply the presence of a discontinuity or any other singularity of the solution.

  15. Plasma flow switch experiment on Procyon

    SciTech Connect (OSTI)

    Benage, J.F. Jr.; Bowers, R.; Peterson, D. [and others

    1995-09-01T23:59:59.000Z

    This report presents the results obtained from a series of plasma flow switch experiments done on the Procyon explosive pulse power generator. These experiments involved switching into a fixed inductance dummy load and also into a dynamic implosion load. The results indicated that the switch did fairly well at switching current into the load, but the results for the implosion are more ambiguous. The results are compared to calculations and the implications for future plasma flow switch work are discussed.

  16. DNA polymorphism identity determination using flow cytometry

    DOE Patents [OSTI]

    Nolan, John P. (Santa Fe, NM); White, P. Scott (Los Alamos, NM); Cai, Hong (Los Alamos, NM)

    2001-01-01T23:59:59.000Z

    DNA polymorphism identity determination using flow cytometry. Primers designed to be immobilized on microspheres are allowed to anneal to the DNA strand under investigation, and are extended by either DNA polymerase using fluorescent dideoxynucleotides or ligated by DNA ligase to fluorescent reporter oligonucleotides. The fluorescence of either the dideoxynucleotide or the reporter oligonucleotide attached to the immobilized primer is measured by flow cytometry, thereby identifying the nucleotide polymorphism on the DNA strand.

  17. On the Geodesic Nature of Wegner's Flow

    E-Print Network [OSTI]

    Yuichi Itto; Sumiyoshi Abe

    2012-02-08T23:59:59.000Z

    Wegner's method of flow equations offers a useful tool for diagonalizing a given Hamiltonian and is widely used in various branches of quantum physics. Here, generalizing this method, a condition is derived, under which the corresponding flow of a quantum state becomes geodesic in a submanifold of the projective Hilbert space, independently of specific initial conditions. This implies the geometric optimality of the present method as an algorithm of generating stationary states. The result is illustrated by analyzing some physical examples.

  18. Generalized one-dimensional, steady, compressible flow

    SciTech Connect (OSTI)

    Young, F.M. (Lamar Univ., Beaumont, TX (United States))

    1993-01-01T23:59:59.000Z

    The present development and testing of a generalized method for analytically examining 1D steady flow of perfect gases allows area change, heat transfer, friction, and mass injection. Generalized flow functions are developed, and sample tables are calculated and tested for both simple cases and combined changes. Normal shocks are noted to occur from the supersonic portion of these loci to the subsonic portion, in a manner analogous to simple-change behavior. 9 refs.

  19. Hingeless flow control over delta wing planforms

    E-Print Network [OSTI]

    Moeller, Edward Brian

    2012-06-07T23:59:59.000Z

    HINGELESS FLOW CONTROL OVER DELTA WING PLANFORMS A Thesis by EDWARD BRIAN MOELLER Submitted to the Office of Graduate Studies of Texas ARM University in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE August 1999... Major Subject: Aerospace Engineering HINGELESS FLOW CONTROL OVER DELTA WING PLANFORMS A Thesis by EDWARD BRIAN MOELLER Submitted to Texas A&M University in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE Approved...

  20. A Semiconductor Microlaser for Intracavity Flow Cytometry

    SciTech Connect (OSTI)

    Akhil, O.; Copeland, G.C.; Dunne, J.L.; Gourley, P.L.; Hendricks, J.K.; McDonald, A.E.

    1999-01-20T23:59:59.000Z

    Semiconductor microlasers are attractive components for micro-analysis systems because of their ability to emit coherent intense light from a small aperture. By using a surface-emitting semiconductor geometry, we were able to incorporate fluid flow inside a laser microcavity for the first time. This confers significant advantages for high throughput screening of cells, particulates and fluid analytes in a sensitive microdevice. In this paper we discuss the intracavity microfluidics and present preliminary results with flowing blood and brain cells.

  1. 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.

  2. Data flow machine for data driven computing

    DOE Patents [OSTI]

    Davidson, George S. (Albuquerque, NM); Grafe, Victor G. (Albuquerque, NM)

    1995-01-01T23:59:59.000Z

    A data flow computer which of computing is disclosed which utilizes a data driven processor node architecture. The apparatus in a preferred embodiment includes a plurality of First-In-First-Out (FIFO) registers, a plurality of related data flow memories, and a processor. The processor makes the necessary calculations and includes a control unit to generate signals to enable the appropriate FIFO register receiving the result. In a particular embodiment, there are three FIFO registers per node: an input FIFO register to receive input information form an outside source and provide it to the data flow memories; an output FIFO register to provide output information from the processor to an outside recipient; and an internal FIFO register to provide information from the processor back to the data flow memories. The data flow memories are comprised of four commonly addressed memories. A parameter memory holds the A and B parameters used in the calculations; an opcode memory holds the instruction; a target memory holds the output address; and a tag memory contains status bits for each parameter. One status bit indicates whether the corresponding parameter is in the parameter memory and one status but to indicate whether the stored information in the corresponding data parameter is to be reused. The tag memory outputs a "fire" signal (signal R VALID) when all of the necessary information has been stored in the data flow memories, and thus when the instruction is ready to be fired to the processor.

  3. Data flow machine for data driven computing

    DOE Patents [OSTI]

    Davidson, G.S.; Grafe, V.G.

    1988-07-22T23:59:59.000Z

    A data flow computer and method of computing is disclosed which utilizes a data driven processor node architecture. The apparatus in a preferred embodiment includes a plurality of First-In-First-Out (FIFO) registers, a plurality of related data flow memories, and a processor. The processor makes the necessary calculations and includes a control unit to generate signals to enable the appropriate FIFO register receiving the result. In a particular embodiment, there are three FIFO registers per node: an input FIFO register to receive input information from an outside source and provide it to the data flow memories; an output FIFO register to provide output information from the processor to an outside recipient; and an internal FIFO register to provide information from the processor back to the data flow memories. The data flow memories are comprised of four commonly addressed memories. A parameter memory holds the A and B parameters used in the calculations; an opcode memory holds the instruction; a target memory holds the output address; and a tag memory contains status bits for each parameter. One status bit indicates whether the corresponding parameter is in the parameter memory and one status bit to indicate whether the stored information in the corresponding data parameter is to be reused. The tag memory outputs a ''fire'' signal (signal R VALID) when all of the necessary information has been stored in the data flow memories, and thus when the instruction is ready to be fired to the processor. 11 figs.

  4. An evaluation of heat flow transducers as a means of determining soil heat flow

    E-Print Network [OSTI]

    King, Barney L. D

    2012-06-07T23:59:59.000Z

    provided to the Micrometeorology Section, Department of Oceanography and Meteorology, ARM College of Texas by the Signal Corps of the United States Army, under Contract No. DA 36-039 AMC-02195 (E). The heat flow plates used in this study were provided... surface soil heat flow. The results show that acceptable performance of the plates in the measurement of heat flow is possible although in general should not be expected without thorough testing, and even then there are restrictive considerations...

  5. E-Print Network 3.0 - asymmetric flow field-flow Sample Search...

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

    ... Source: Utah, University of - State of Utah Center of Excellence for Biomedical Microfluidics Collection: Engineering 2 A MICROFABRICATED THERMO-ELECTRICAL FIELD FLOW...

  6. E-Print Network 3.0 - asymmetrical flow field-flow Sample Search...

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

    ... Source: Utah, University of - State of Utah Center of Excellence for Biomedical Microfluidics Collection: Engineering 2 A MICROFABRICATED THERMO-ELECTRICAL FIELD FLOW...

  7. ARC-HEATED GAS FLOW EXPERIMENTS FOR HYPERSONIC PROPULSION

    E-Print Network [OSTI]

    Texas at Arlington, University of

    was extensively developed for the purpose of eventually performing experiments simulating scramjet engine flow

  8. Human Factors Aspects of Power System Flow Animation

    E-Print Network [OSTI]

    into utility control centers. For example, [1] and [2] describe the on-line usage of animated flows, voltageHuman Factors Aspects of Power System Flow Animation Douglas A. Wiegmann, Gavin R. Essenberg flow information, including transmission line MW flow and power transfer distribution factor (PTDF

  9. Fluid Flow and Infiltration in Structured Fibrous Porous Media

    SciTech Connect (OSTI)

    Papathanasiou, Thanasis D.

    2006-08-09T23:59:59.000Z

    Present the results of an extensive computational investigation of flow through structured fibrous media.

  10. Uniform and Preferential Flow Mechanisms in the Vadose Zone

    E-Print Network [OSTI]

    Flury, Markus

    flow and chemical leaching. The objectives of this paper are to describe and classify flow mechanisms on measurement techniques for preferential flow and with guidelines for the formu- lation of conceptual models. All rights reserved. Conceptual Models of Flow and Transport in the Fractured Vadose Zone http

  11. 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.

  12. Improving Work Flow Reliability Proceedings IGLC-7 275

    E-Print Network [OSTI]

    Tommelein, Iris D.

    Ballard1 ABSTRACT Improving work flow reliability is important for the productivity of linked productionImproving Work Flow Reliability Proceedings IGLC-7 275 IMPROVING WORK FLOW RELIABILITY Glenn units, and consequently for project cost and duration. One measure of work flow reliability is PPC

  13. Design and Fabrication of a Vertical Pump Multiphase Flow Loop

    E-Print Network [OSTI]

    Kirkland, Klayton 1965-

    2012-08-24T23:59:59.000Z

    is supplied by separate air and water inlet flows that mix just before entering the pump. These flows can be controlled to give a desired gas volume fraction and overall flow rate. The pump outlet flows into a tank which separates the fluids allowing them...

  14. Origins of Pulsing Regime in Cocurrent Packed-Bed Flows

    E-Print Network [OSTI]

    McCready, Mark J.

    , 6, and 8 mm using an air-water flow. By measuring the flow distance until pulses are observedOrigins of Pulsing Regime in Cocurrent Packed-Bed Flows B.A. Wilhite+ , B. Blackwell+ , J. Kacmar of the formation for cocurrent downflow pulse flow was studied experimentally in a packed-bed of inert spheres of 3

  15. Flow Battery System Design for Manufacturability.

    SciTech Connect (OSTI)

    Montoya, Tracy Louise; Meacham, Paul Gregory; Perry, David; Broyles, Robin S.; Hickey, Steven; Hernandez, Jacquelynne

    2014-10-01T23:59:59.000Z

    Flow battery energy storage systems can support renewable energy generation and increase energy efficiency. But, presently, the costs of flow battery energy storage systems can be a significant barrier for large-scale market penetration. For cost- effective systems to be produced, it is critical to optimize the selection of materials and components simultaneously with the adherence to requirements and manufacturing processes to allow these batteries and their manufacturers to succeed in the market by reducing costs to consumers. This report analyzes performance, safety, and testing requirements derived from applicable regulations as well as commercial and military standards that would apply to a flow battery energy storage system. System components of a zinc-bromine flow battery energy storage system, including the batteries, inverters, and control and monitoring system, are discussed relative to manufacturing. The issues addressed include costs and component availability and lead times. A service and support model including setup, maintenance and transportation is outlined, along with a description of the safety-related features of the example flow battery energy storage system to promote regulatory and environmental, safety, and health compliance in anticipation of scale manufacturing.

  16. Dissipative flows of 2D foams

    E-Print Network [OSTI]

    Isabelle Cantat; Renaud Delannay

    2005-07-21T23:59:59.000Z

    We analyze the flow of a liquid foam between two plates separated by a gap of the order of the bubble size (2D foam). We concentrate on the salient features of the flow that are induced by the presence, in an otherwise monodisperse foam, of a single large bubble whose size is one order of magnitude larger than the average size. We describe a model suited for numerical simulations of flows of 2D foams made up of a large number of bubbles. The numerical results are successfully compared to analytical predictions based on scaling arguments and on continuum medium approximations. When the foam is pushed inside the cell at a controlled rate, two basically different regimes occur: a plug flow is observed at low flux whereas, above a threshold, the large bubble migrates faster than the mean flow. The detailed characterization of the relative velocity of the large bubble is the essential aim of the present paper. The relative velocity values, predicted both from numerical and from analytical calculations that are discussed here in great detail, are found to be in fair agreement with experimental results.

  17. Assembly flow simulation of a radar

    SciTech Connect (OSTI)

    Rutherford, W.C.; Biggs, P.M.

    1993-10-01T23:59:59.000Z

    A discrete event simulation model has been developed to predict the assembly flow time of a new radar product. The simulation was the key tool employed to identify flow constraints. The radar, production facility, and equipment complement were designed, arranged, and selected to provide the most manufacturable assembly possible. A goal was to reduce the assembly and testing cycle time from twenty-six weeks to six weeks. A computer software simulation package (SLAM II) was utilized as the foundation a for simulating the assembly flow time. FORTRAN subroutines were incorporated into the software to deal with unique flow circumstances that were not accommodated by the software. Detailed information relating to the assembly operations was provided by a team selected from the engineering, manufacturing management, inspection, and production assembly staff. The simulation verified that it would be possible to achieve the cycle time goal of six weeks. Equipment and manpower constraints were identified during the simulation process and adjusted as required to achieve the flow with a given monthly production requirement. The simulation is being maintained as a planning tool to be used to identify constraints in the event that monthly output is increased. ``What-if`` studies have been conducted to identify the cost of reducing constraints caused by increases in output requirement.

  18. High precision high flow range control valve

    DOE Patents [OSTI]

    McCray, J.A.

    1999-07-13T23:59:59.000Z

    A fluid control valve is described having a valve housing having first and second valve housing openings for the ingress and egress of fluid through the control valve. Disposed within a void formed by the control valve is a sleeve having at least one sleeve opening to permit the flow of fluid therethrough. A flow restricter travels within the sleeve to progressively block off the sleeve opening and thereby control flow. A fluid passageway is formed between the first valve housing opening and the outer surface of the sleeve. A second fluid passageway is formed between the inside of the sleeve and the second valve housing opening. Neither fluid passageway contains more than one 90 [degree] turn. In the preferred embodiment only one of the two fluid passageways contains a 90[degree] turn. In another embodiment, the control valve housing is bifurcated by a control surface having control surface opening disposed therethrough. A flow restricter is in slidable contact with the control surface to restrict flow of fluid through the control surface openings. 12 figs.

  19. Slow sound in lined flow ducts

    E-Print Network [OSTI]

    Auregan, Yves

    2015-01-01T23:59:59.000Z

    We consider the acoustic propagation in lined flow duct with a purely reactive impedance at the wall. This reacting liner has the capability to reduce the speed of sound, and thus to enhance the interaction between the acoustic propagation and the low Mach number flow ($M\\simeq0.3$). At the lower frequencies, there are typically 4 acoustic or hydrodynamic propagating modes, with 3 of them propagating in the direction of the flow. Above a critical frequency, there are only 2 propagating modes that all propagate in the direction of the flow. From the exact 2D formulation an approximate 1D model is developed to study the scattering of acoustic waves in a straight duct with varying wall impedance. This simple system, with a uniform flow and with a non-uniform liner impedance at the wall, permits to study the scattering between regions with different waves characteristics. Several situations are characterized to show the importance of negative energy waves, strong interactions between acoustic and hydrodynamic mod...

  20. Flow heterogeneity following global no-flow ischemia in isolated rabbit heart

    SciTech Connect (OSTI)

    Marshall, Robert C.; Powers-Risius, Patricia; Reutter, Bryan W.; Schustz, Amy M.; Kuo, Chaincy; Huesman, Michelle K.; Huesman, Ronald H.

    2003-02-01T23:59:59.000Z

    The purpose of this study was to evaluate flow heterogeneity and impaired reflow during reperfusion following 60 min global no-flow ischemia in the isolated rabbit heart. Radiolabeled microspheres were used to measure relative flow in small left ventricular (LV) segments in five ischemia + reperfused hearts and in five non-ischemic controls. Although variable in the post-ischemic hearts, flow heterogeneity was increased relative to pre-ischemia for the whole LV (0.92 plus or minus 0.41 vs. 0.37 plus or minus 0.07, P < 0.05) as well as the subendocardium (Endo) and subepicardium (Epi) considered separately (endo: 1.28 plus or minus 0.74 vs. 0.30 plus or minus 0.09; epi: 0.69 plus or minus 0.22 vs. 0.38 plus or minus 0.08; P < 0.05 for both comparisons) during early reperfusion. There were also segments with abnormally reduced reflow. The number of segments with abnormally reduced reflow increased as flow heterogeneity increased. Abnormally reduced reflow indicates that regional ischemia can persist despite restoration of normal global flow. In addition, the relationship between regional and global flow is altered and venous outflow is derived from regions with continued perfusion and not the whole LV. These observations emphasize the need to quantify regional reflow during reperfusion following sustained no-flow ischemia in the isolated rabbit heart.

  1. Geochemical and Isotopic Interpretations of Groundwater Flow in the Oasis Valley Flow System, Southern Nevada

    SciTech Connect (OSTI)

    J.M. Thomas; F.C. Benedict, Jr.; T.P. Rose; R.L. Hershey; J.B. Paces; Z.E. Peterman; I.M. Farnham; K.H. Johannesson; A.K. Singh; K.J. Stetzenbach; G.B. Hudson; J.M. Kenneally; G.F. Eaton; D.K. Smith

    2003-01-08T23:59:59.000Z

    This report summarizes the findings of a geochemical investigation of the Pahute Mesa-Oasis Valley groundwater flow system in southwestern Nevada. It is intended to provide geochemical data and interpretations in support of flow and contaminant transport modeling for the Western and Central Pahute Mesa Corrective Action Units.

  2. Response of a slotted plate flow meter to horizontal two phase flow

    E-Print Network [OSTI]

    Muralidharan, Vasanth

    2005-02-17T23:59:59.000Z

    meter is always better in performance and accuracy than the standard orifice plate flow meter. This study is primarily based on how a slotted plate responds to horizontal two-phase flow with air and water being used as the working fluids. The plates...

  3. Pressure-flow reducer for aerosol focusing devices

    DOE Patents [OSTI]

    Gard, Eric (San Francisco, CA); Riot, Vincent (Oakland, CA); Coffee, Keith (Diablo Grande, CA); Woods, Bruce (Livermore, CA); Tobias, Herbert (Kensington, CA); Birch, Jim (Albany, CA); Weisgraber, Todd (Brentwood, CA)

    2008-04-22T23:59:59.000Z

    A pressure-flow reducer, and an aerosol focusing system incorporating such a pressure-flow reducer, for performing high-flow, atmosphere-pressure sampling while delivering a tightly focused particle beam in vacuum via an aerodynamic focusing lens stack. The pressure-flow reducer has an inlet nozzle for adjusting the sampling flow rate, a pressure-flow reduction region with a skimmer and pumping ports for reducing the pressure and flow to enable interfacing with low pressure, low flow aerosol focusing devices, and a relaxation chamber for slowing or stopping aerosol particles. In this manner, the pressure-flow reducer decouples pressure from flow, and enables aerosol sampling at atmospheric pressure and at rates greater than 1 liter per minute.

  4. A survey of air flow models for multizone structures

    SciTech Connect (OSTI)

    Feustel, H.E.; Dieris, J.

    1991-03-01T23:59:59.000Z

    Air flow models are used to simulate the rates of incoming and outgoing air flows for a building with known leakage under given weather and shielding conditions. Additional information about the flow paths and air-mass flows inside the building can only by using multizone air flow models. In order to obtain more information on multizone air flow models, a literature review was performed in 1984. A second literature review and a questionnaire survey performed in 1989, revealed the existence of 50 multizone air flow models, all developed since 1966, two of which are still under development. All these programs use similar flow equations for crack flow but differ in the versatility to describe the full range of flow phenomena and the algorithm provided for solving the set of nonlinear equations. This literature review was found that newer models are able to describe and simulate the ventilation systems and interrelation of mechanical and natural ventilation. 27 refs., 2 figs., 1 tab.

  5. A Conductivity Relationship for Steady-state Unsaturated Flow Processes under Optimal Flow Conditions

    SciTech Connect (OSTI)

    Liu, H. H.

    2010-09-15T23:59:59.000Z

    Optimality principles have been used for investigating physical processes in different areas. This work attempts to apply an optimal principle (that water flow resistance is minimized on global scale) to steady-state unsaturated flow processes. Based on the calculus of variations, we show that under optimal conditions, hydraulic conductivity for steady-state unsaturated flow is proportional to a power function of the magnitude of water flux. This relationship is consistent with an intuitive expectation that for an optimal water flow system, locations where relatively large water fluxes occur should correspond to relatively small resistance (or large conductance). Similar results were also obtained for hydraulic structures in river basins and tree leaves, as reported in other studies. Consistence of this theoretical result with observed fingering-flow behavior in unsaturated soils and an existing model is also demonstrated.

  6. Turbine exhaust diffuser with region of reduced flow area and outer boundary gas flow

    DOE Patents [OSTI]

    Orosa, John

    2014-03-11T23:59:59.000Z

    An exhaust diffuser system and method for a turbine engine. The outer boundary may include a region in which the outer boundary extends radially inwardly toward the hub structure and may direct at least a portion of an exhaust flow in the diffuser toward the hub structure. At least one gas jet is provided including a jet exit located on the outer boundary. The jet exit may discharge a flow of gas downstream substantially parallel to an inner surface of the outer boundary to direct a portion of the exhaust flow in the diffuser toward the outer boundary to effect a radially outward flow of at least a portion of the exhaust gas flow toward the outer boundary to balance an aerodynamic load between the outer and inner boundaries.

  7. Higher dimensions Max flow min cut in higher dimensions

    E-Print Network [OSTI]

    Duval, Art

    -negative number, and direction) to each edge such that: net flow at each vertex, except S and T, is zero; and |xe, and direction) to each edge such that: net flow at each vertex is zero; and |xe| e. Value of flow is x0. Duval: net flow at each vertex is zero; and |xe| e. Value of flow is x0. Definition Cut is minimal set

  8. Flow coating apparatus and method of coating

    DOE Patents [OSTI]

    Hanumanthu, Ramasubrahmaniam; Neyman, Patrick; MacDonald, Niles; Brophy, Brenor; Kopczynski, Kevin; Nair, Wood

    2014-03-11T23:59:59.000Z

    Disclosed is a flow coating apparatus, comprising a slot that can dispense a coating material in an approximately uniform manner along a distribution blade that increases uniformity by means of surface tension and transfers the uniform flow of coating material onto an inclined substrate such as for example glass, solar panels, windows or part of an electronic display. Also disclosed is a method of flow coating a substrate using the apparatus such that the substrate is positioned correctly relative to the distribution blade, a pre-wetting step is completed where both the blade and substrate are completed wetted with a pre-wet solution prior to dispensing of the coating material onto the distribution blade from the slot and hence onto the substrate. Thereafter the substrate is removed from the distribution blade and allowed to dry, thereby forming a coating.

  9. Separation of particles from gaseous fluid flows

    SciTech Connect (OSTI)

    Paul, E.; Reither, K.

    1980-12-16T23:59:59.000Z

    In a gas washer and similar separator devices which utilize stationary wall means to deflect a gas flow and to subject the same to centrifugal force for continuously separating out foreign particulate matter which is collected on or adjacent the stationary wall means, the invention provides spirally curved laminae constituting the stationary wall means and co-operating to define passage means, at least a part of which has a cross-section which first narrows and then widens in the direction of fluid flow and which is also curved spirally first in one and then in the opposite direction. Nozzle means may be arranged to feed moisture into the fluid flow to assist wet separation, and by electrically insulating conductive laminae from one another, the invention may also be used as an electrostatic precipitator.

  10. MHD flows at astropauses and in astrotails

    E-Print Network [OSTI]

    Nickeler, Dieter H; Karlicky, Marian; Kraus, Michaela

    2015-01-01T23:59:59.000Z

    The geometrical shapes and the physical properties of stellar wind -- interstellar medium interaction regions form an important stage for studying stellar winds and their embedded magnetic fields as well as cosmic ray modulation. Our goal is to provide a proper representation and classification of counter-flow configurations and counter-flow interfaces in the frame of fluid theory. In addition we calculate flows and large-scale electromagnetic fields based on which the large-scale dynamics and its role as possible background for particle acceleration, e.g. in the form of anomalous cosmic rays, can be studied. We find that for the definition of the boundaries, which are determining the astropause shape, the number and location of magnetic null points and stagnation points is essential. Multiple separatrices can exist, forming a highly complex environment for the interstellar and stellar plasma. Furthermore, the formation of extended tail structures occur naturally, and their stretched field and streamlines pro...

  11. Fuel cell with internal flow control

    DOE Patents [OSTI]

    Haltiner, Jr., Karl J. (Fairport, NY); Venkiteswaran, Arun (Karnataka, IN)

    2012-06-12T23:59:59.000Z

    A fuel cell stack is provided with a plurality of fuel cell cassettes where each fuel cell cassette has a fuel cell with an anode and cathode. The fuel cell stack includes an anode supply chimney for supplying fuel to the anode of each fuel cell cassette, an anode return chimney for removing anode exhaust from the anode of each fuel cell cassette, a cathode supply chimney for supplying oxidant to the cathode of each fuel cell cassette, and a cathode return chimney for removing cathode exhaust from the cathode of each fuel cell cassette. A first fuel cell cassette includes a flow control member disposed between the anode supply chimney and the anode return chimney or between the cathode supply chimney and the cathode return chimney such that the flow control member provides a flow restriction different from at least one other fuel cell cassettes.

  12. Radio Triggered Star Formation in Cooling Flows

    E-Print Network [OSTI]

    B. R. McNamara

    1999-11-08T23:59:59.000Z

    The giant galaxies located at the centers of cluster cooling flows are frequently sites of vigorous star formation. In some instances, star formation appears to have been triggered by the galaxy's radio source. The colors and spectral indices of the young populations are generally consistent with short duration bursts or continuous star formation for durations much less than 1 Gyr, which is less than the presumed ages of cooling flows. The star formation properties are inconsistent with fueling by a continuously accreting cooling flow, although the prevalence of star formation is consistent with repeated bursts and periodic refueling. Star formation may be fueled, in some cases, by cold material stripped from neighboring cluster galaxies.

  13. Flowing Liquid Crystal Simulating the Schwarzschild Metric

    E-Print Network [OSTI]

    Erms R. Pereira; Fernando Moraes

    2010-11-21T23:59:59.000Z

    We show how to simulate the equatorial section of the Schwarzschild metric through a flowing liquid crystal in its nematic phase. Inside a liquid crystal in the nematic phase, a traveling light ray feels an effective metric, whose properties are linked to perpendicular and parallel refractive indexes, $n_o$ e $n_e$ respectively, of the rod-like molecule of the liquid crystal. As these indexes depend on the scalar order parameter of the liquid crystal, the Beris-Edwards hydrodynamic theory is used to connect the order parameter with the velocity of a liquid crystal flow at each point. This way we calculate a radial velocity profile that simulates the equatorial section of the Schwarzschild metric, in the region outside of Schwarzschild's radius, in the nematic phase of the liquid crystal. In our model, the higher flow velocity can be of the order of some meters per second.

  14. Experimental characterization of spin motor nozzle flow.

    SciTech Connect (OSTI)

    Erven, Rocky J.; Peterson, Carl Williams; Henfling, John Francis

    2006-11-01T23:59:59.000Z

    The Mach number in the inviscid core of the flow exiting scarfed supersonic nozzles was measured using pitot probes. Nozzle characterization experiments were conducted in a modified section of an obsolete M = 7.3 test section/nozzle assembly on Sandia's Hypersonic Wind Tunnel. By capitalizing on existing hardware, the cost and time required for tunnel modifications were significantly reduced. Repeatability of pitot pressure measurements was excellent, and instrumentation errors were reduced by optimizing the pressure range of the transducers used for each test run. Bias errors in probe position prevented us from performing a successful in situ calibration of probe angle effects using pitot probes placed at an angle to the nozzle centerline. The abrupt throat geometry used in the Baseline and Configuration A and B nozzles modeled the throat geometry of the flight vehicle's spin motor nozzles. Survey data indicates that small (''unmeasurable'') differences in the nozzle throat geometries produced measurable flow asymmetries and differences in the flow fields generated by supposedly identical nozzles. Therefore, data from the Baseline and Configuration A and B nozzles cannot be used for computational fluid dynamics (CFD) code validation. Configuration C and D nozzles replaced the abrupt throat geometry of Baseline and Configuration A and B nozzles with a 0.500-inch streamwise radius of curvature in the throat region. This throat geometry eliminated the flow asymmetries, flow separation in the nozzle throat, and measurable differences between the flow fields from identical nozzles that were observed in Baseline/A/B nozzles. Data from Configuration C and D nozzles can be used for CFD code validation.

  15. 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.

  16. Simplifying the complexity of pipe flow

    E-Print Network [OSTI]

    Dwight Barkley

    2011-05-19T23:59:59.000Z

    Transitional pipe flow is modeled as a one-dimensional excitable and bistable medium. Models are presented in two variables, turbulence intensity and mean shear, that evolve according to established properties of transitional turbulence. A continuous model captures the essence of the puff-slug transition as a change from excitability to bistability. A discrete model, that additionally incorporates turbulence locally as a chaotic repeller, reproduces almost all large-scale features of transitional pipe flow. In particular it captures metastable localized puffs, puff splitting, slugs, a continuous transition to sustained turbulence via spatiotemporal intermittency (directed percolation), and a subsequent increase in turbulence fraction towards uniform, featureless turbulence.

  17. The geodesic flow on a Riemannian supermanifold

    E-Print Network [OSTI]

    Stphane Garnier; Tilmann Wurzbacher

    2011-07-09T23:59:59.000Z

    We give a natural definition of geodesics on a Riemannian supermanifold and extend the usual geodesic flow defined on the cotangent bundle of the body of the supermanifold, associated to the induced Riemannian structure on the body, to a geodesic "superflow" on the cotangent bundle of the supermanifold. Integral curves of this flow turn out to be in natural bijection with geodesics on the Riemannian supermanifold. We also construct the corresponding exponential map and generalize the well-known faithful linearization of isometries to Riemannian supermanifolds.

  18. Rebalancing electrolytes in redox flow battery systems

    DOE Patents [OSTI]

    Chang, On Kok; Pham, Ai Quoc

    2014-12-23T23:59:59.000Z

    Embodiments of redox flow battery rebalancing systems include a system for reacting an unbalanced flow battery electrolyte with a rebalance electrolyte in a first reaction cell. In some embodiments, the rebalance electrolyte may contain ferrous iron (Fe.sup.2+) which may be oxidized to ferric iron (Fe.sup.3+) in the first reaction cell. The reducing ability of the rebalance reactant may be restored in a second rebalance cell that is configured to reduce the ferric iron in the rebalance electrolyte back into ferrous iron through a reaction with metallic iron.

  19. Interphase transport in horizontal stratified cocurrent flow

    SciTech Connect (OSTI)

    Jensen, R.J.; Yuen, M.C.

    1982-05-01T23:59:59.000Z

    The problem of interfacial transport in cocurrent, horizontal stratified gas-liquid systems is considered. Local condensation heat transfer coefficients and interface shear stress were obtained from mass and force balances. Based on cocurrent stratified air-water flow data, the noncondensing interface shear stress was found to be a function of the relative velocity between the phases and the liquid fraction. Incorporated into Linehan's relation for condensing flow shear stress, the correlation was found to estimate the shear velocity for the condensation data considered. Local condensation heat transfer coefficients and gas absorption mass transfer coefficients were found to be directly proportional to the shear velocity.

  20. Real-time planar flow velocity measurements using an optical flow algorithm implemented on GPU

    E-Print Network [OSTI]

    Gautier, N

    2013-01-01T23:59:59.000Z

    This paper presents a high speed implementation of an optical flow algorithm which computes planar velocity fields in an experimental flow. Real-time computation of the flow velocity field allows the experimentalist to have instantaneous access to quantitative features of the flow. This can be very useful in many situations: fast evaluation of the performances and characteristics of a new setup, design optimization, easier and faster parametric studies, etc. It can also be a valuable measurement tool for closed-loop flow control experiments where fast estimation of the state of the flow is needed. The algorithm is implemented on a Graphics Processing Unit (GPU). The accuracy of the computation is shown. Computation speed and scalability are highlighted along with guidelines for further improvements. The system architecture is flexible, scalable and can be adapted on the fly in order to process higher resolutions or achieve higher precision. The set-up is applied on a Backward-Facing Step (BFS) flow in a hydro...

  1. System for measuring multiphase flow using multiple pressure differentials

    DOE Patents [OSTI]

    Fincke, James R. (Idaho Falls, ID)

    2003-01-01T23:59:59.000Z

    An improved method and system for measuring a multi-phase flow in a pressure flow meter. An extended throat venturi is used and pressure of the multi-phase flow is measured at three or more positions in the venturi, which define two or more pressure differentials in the flow conduit. The differential pressures are then used to calculate the mass flow of the gas phase, the total mass flow, and the liquid phase. The system for determining the mass flow of the high void fraction fluid flow and the gas flow includes taking into account a pressure drop experienced by the gas phase due to work performed by the gas phase in accelerating the liquid phase.

  2. Efficient Production Optimization Using Flow Network Models

    E-Print Network [OSTI]

    Lerlertpakdee, Pongsathorn

    2012-10-19T23:59:59.000Z

    of the physical processes that govern the long-term behavior of the reservoir. We present an alternative solution that combines the advantages of both statistics-based and physics-based methods by deriving the flow predictions in complex two-dimensional models...

  3. International Borders, Ground Water Flow, and Hydroschizophrenia

    E-Print Network [OSTI]

    Wolf, Aaron

    beginning to be recognized. The hidden nature of ground water and the lack of international law governingInternational Borders, Ground Water Flow, and Hydroschizophrenia by Todd Jarvis1,2, Mark Giordano3 conducted on transboundary water, transboundary water law, and the mitigation of transboundary water

  4. Rheology of confined granular flows Patrick RICHARD

    E-Print Network [OSTI]

    Boyer, Edmond

    in the momentum balance if the second term on the right in this equation dominates over the first. This equation://www.aip..org/pacs/index.html> INTRODUCTION Surface flows of granular materials are frequently observed in industrial processes and in nature configurations. The first one is a rotating drum [3, 5, 4, 6], a cylinder, partly filled with granular material

  5. (Preview Draft) Chapter 4. Accumulating the Flows

    E-Print Network [OSTI]

    Ford, Andrew

    't take long because you only needed to update the stock very dec as a combination of stocks and flows and then simulated on the computer. The simulation results are generated adopted for this example. CO2 in the atmosphere is a stock measured in Gigatons of Carbon, abbreviated GTC

  6. Taylor-Couette flow of unmagnetized plasma

    SciTech Connect (OSTI)

    Collins, C.; Cooper, C. M.; Flanagan, K.; Khalzov, I. V.; Nornberg, M. D.; Forest, C. B. [Department of Physics, University of Wisconsin, Madison, Wisconsin 53706 (United States) [Department of Physics, University of Wisconsin, Madison, Wisconsin 53706 (United States); Center for Magnetic Self Organization, University of Wisconsin, Madison, Wisconsin 53706 (United States); Clark, M.; Seidlitz, B.; Wallace, J. [Department of Physics, University of Wisconsin, Madison, Wisconsin 53706 (United States)] [Department of Physics, University of Wisconsin, Madison, Wisconsin 53706 (United States)

    2014-04-15T23:59:59.000Z

    Differentially rotating flows of unmagnetized, highly conducting plasmas have been created in the Plasma Couette Experiment. Previously, hot-cathodes have been used to control plasma rotation by a stirring technique [C. Collins et al., Phys. Rev. Lett. 108, 115001 (2012)] on the outer cylindrical boundarythese plasmas were nearly rigid rotors, modified only by the presence of a neutral particle drag. Experiments have now been extended to include stirring from an inner boundary, allowing for generalized circular Couette flow and opening a path for both hydrodynamic and magnetohydrodynamic experiments, as well as fundamental studies of plasma viscosity. Plasma is confined in a cylindrical, axisymmetric, multicusp magnetic field, with T{sub e}?flows (up to 12?km/s, M?=?V?c{sub s}???0.7) are driven by edge J??B torques in helium, neon, argon, and xenon plasmas, and the experiment has already achieved Rm???65 and Pm?0.2?12. We present measurements of a self-consistent, rotation-induced, species-dependent radial electric field, which acts together with pressure gradient to provide the centripetal acceleration for the ions. The maximum flow speeds scale with the Alfvn critical ionization velocity, which occurs in partially ionized plasma. A hydrodynamic stability analysis in the context of the experimental geometry and achievable parameters is also explored.

  7. CHAPTER NO. FULLY NONLINEAR POTENTIAL FLOW MODELS

    E-Print Network [OSTI]

    Grilli, Stéphan T.

    approaches pursued were based on using : (i) linear or nonlinear Shallow Water Wave equations (Carrier approaches. Griffiths et al. 28 1992, compared measurements of internal kinematics of periodic waves shoalingCHAPTER NO. FULLY NONLINEAR POTENTIAL FLOW MODELS USED FOR LONG WAVE RUNUP PREDICTION (S. Grilli

  8. Symmetry related dynamics in parallel shear flows

    E-Print Network [OSTI]

    Tobias Kreilos; Stefan Zammert; Bruno Eckhardt

    2014-04-23T23:59:59.000Z

    Parallel shear flows come with continuous symmetries of translation in the downstream and spanwise direction. As a consequence, flow states that differ in their spanwise or downstream location but are otherwise identical are dynamically equivalent. In the case of travelling waves, this trivial degree of freedom can be removed by going to a frame of reference that moves with the state, thereby turning the travelling wave in the laboratory frame to a fixed point in the comoving frame of reference. We here discuss a general method by which the translational displacements can be removed also for more complicated and dynamically active states and demonstrate its application for several examples. For flows states in the asymptotic suction boundary layer we show that in the case of the long-period oscillatory edge state we can find local phase speeds which remove the fast oscillations and reveal the slow vortex dynamics underlying the burst phenomenon. For spanwise translating states we show that the method removes the drift but not the dynamical events that cause the big spanwise displacement. For a turbulent case we apply the method to the spanwise shifts and find slow components that are correlated over very long times. Calculations for plane Poiseuille flow show that the long correlations in the transverse motions are not special to the asymptotic suction boundary layer.

  9. Entrance effects in a developing slug flow

    E-Print Network [OSTI]

    Moissis, Raphael

    1960-01-01T23:59:59.000Z

    The kinetics of a Taylor bubble, as it rises behind a series of other bubbles in a gas-liquid slug flow, have been determined. The rise velocity of a bubble is expressed as a function of separation distance from the bubble ...

  10. Energy flow observables in hadronic collisions

    E-Print Network [OSTI]

    F. Hautmann

    2012-05-24T23:59:59.000Z

    We present recent QCD calculations of energy flow distributions associated with the production of jets at wide rapidity separations in high-energy hadron collisions, and discuss the role of these observables to analyze contributions from parton showering and from multiple parton collisions.

  11. Learning Optical Flow Deqing Sun1

    E-Print Network [OSTI]

    Black, Michael J.

    Learning Optical Flow Deqing Sun1 , Stefan Roth2 , J.P. Lewis3 , and Michael J. Black1 1 Department III, LNCS 5304, pp. 83­97, 2008. c Springer-Verlag Berlin Heidelberg 2008 #12;84 D. Sun et al. several

  12. Energy Flow Models for the Steel Industry

    E-Print Network [OSTI]

    Hyman, B.; Andersen, J. P.

    each step is calibrated against Commerce Dept. data. Third, a detailed energy flow model is presented for coke ovens and blast furnaces, two very energy-intensive steps in our seven step model of steelmaking. This process-step model is calibrated...

  13. Multiphase Turbulent Flow Ken Kiger -UMCP

    E-Print Network [OSTI]

    Gruner, Daniel S.

    interacting ­ Distinguish multiphase and/or multicomponent · Liquid/Gas or Gas/Liquid · Gas/Solid · Liquid/Liquid ­ Technically, two immiscible liquids are "multi-fluid", but are often referred to as a "multiphase" flow due emulsions Multi-phase Steam bubble in H20 Ice slurry Coal particles in air Sand particle in H20 #12

  14. Newtonian fluid flow through Microfabricated Hyperbolic Contractions

    E-Print Network [OSTI]

    spraying (Barnes et al. 1989). Optimization of these processes requires accurate measurements for measurement of extensional viscosity involves studying the fluid flow through contractions profiled to give extensional viscosity. To remove the effect of shear at the walls of contractions Shaw (1975) proposed the use

  15. STRONG FLOWS OF VISCOELASTIC WORMLIKE MICELLE SOLUTIONS

    E-Print Network [OSTI]

    Rothstein, Jonathan

    range of industrial and commercial applications including agrochemical spraying, inkjet printing strain hardening of their extensional viscosity which can result in an increased resistance to complex extensional viscosity of these fluids has led to significant drag reduction in turbulent flows. However

  16. From sideward flow to nuclear compressibility

    SciTech Connect (OSTI)

    Pan, Q.; Danielewicz, P. (National Superconducting Cyclotron Laboratory and Department of Physics Astronomy, Michigan State University, East Lansing, Michigan 48824 (United States))

    1993-04-05T23:59:59.000Z

    We show that the differences between the Plastic Ball and DIOGENE experiments on sideward flow make it possible to asses independently, within the transport description of collisions, the effect of density dependence and momentum dependence of the nucleon optical potential. We estimate that the nuclear compressibility [ital K] lies between 180 and 235 MeV.

  17. Proper Orthogonal Decomposition for Flow Calculations

    E-Print Network [OSTI]

    with the energy and the species equa­ tions. In addition, we also examined the feasibility and efficiency of POD that POD can be used to efficiently approximate solutions to the compressible viscous flows coupled a chemical reaction in the gas phase above the surface of the film to deposit desired materials onto

  18. Submarine landslide flows simulation through centrifuge modelling

    E-Print Network [OSTI]

    Gue, Chang Shin

    2012-05-08T23:59:59.000Z

    ) ........ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Figure 2.7: Failure at Helsinki Harbour , Finland in 1936 (after Andresen and Bjerrum, 1967... ) ......... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41 Figure 2.18: Energy conversion for debris flows (modified after Iverson, 1997) .......................................................................................... 50 Figure 2.19: Schematic cross-section defini ng H...

  19. Contact Anosov flows and the FBI transform

    E-Print Network [OSTI]

    Tsujii, Masato

    2010-01-01T23:59:59.000Z

    This paper is about spectral properties of transfer operators for contact Anosov flows. The main result gives the essential spectral radius of the transfer operators acting on the so-called anisotropic Sobolev space exactly in terms of dynamical exponents. Also we provide a simplified proof by using the FBI transform.

  20. Colloidal particle deposition in turbulent flow

    SciTech Connect (OSTI)

    Morton, D.S.

    1994-05-01T23:59:59.000Z

    A theoretical analysis is presented which describes the initial deposition of monodispersed spherical colloidal particles from a steady fully developed turbulent flow onto conduit walls. When the net particle-conduit electrical interaction potential is attractive, particle deposition is shown to be often governed by turbulent hydrodynamics. When the net particle-conduit electrical interaction potential possess a repulsive maximum, particle deposition to first order is uniform and depends solely on electrical interaction effects. The developed theoretical model specialized to orifice deposition with the use of Harwell Flow3D turbulence modelling software qualitatively described the deposition of 0.5 {mu}m silica particles onto glass orifices from an aqueous suspension. The effect of the electrical double layer on the rate of colloidal particle deposition in laminar flow has been described by Spielman and Friedlander (1), Dahneke (2), Bowen et al. (3) and Bowen and Epstein (4). This article describes the extension of their work to colloidal particle deposition under steady fully developed turbulent flow conditions. This article also reports the results of orifice particle deposition experiments which were conducted to qualitatively investigate the developed theoretical model.