Long-tailed probability distributions in turbulent-pipe-flow mixing

Guilkey, J E; Kerstein, A R; McMurtry, P A; Klewicki, J C

doi:10.1103/PhysRevE.56.1753

Title: Long-tailed probability distributions in turbulent-pipe-flow mixing

Full Record
Other Related Research

Abstract

Exponential-tailed scalar probability density functions (PDF{close_quote}s) are obtained by high-pass filtering scalar concentration time series measured in turbulent pipe flow. This behavior reflects the scale separation of scalar and velocity fluctuations that develops in this flow, such that the low-wave-number scalar fluctuations act as an imposed scalar gradient stirred by finer-scale wall-generated shear. This observation broadens the class of flows in which long-tailed scalar PDF{close_quote}s are anticipated to occur. {copyright} {ital 1997} {ital The American Physical Society}

Authors:

Guilkey, J E ^[1]; Kerstein, A R ^[2]; McMurtry, P A; Klewicki, J C ^[1]

Department of Mechanical Engineering, University of Utah, Salt Lake City, Utah 84112 (United States)
Combustion Research Facility, Sandia National Laboratories, Livermore, California 94551-0969 (United States)

Publication Date:: Fri Aug 01 00:00:00 EDT 1997

OSTI Identifier:: 528023

Resource Type:: Journal Article

Journal Name:: Physical Review. E, Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics

Additional Journal Information:: Journal Volume: 56; Journal Issue: 2; Other Information: PBD: Aug 1997

Country of Publication:: United States

Language:: English

Subject:: 66 PHYSICS; TURBULENT FLOW; PROBABILITY; TURBULENCE; PIPES; MIXING; DENSITY; DISTRIBUTION; SCALARS; FLUCTUATIONS; TIME-SERIES ANALYSIS

Citation Formats


                    Guilkey, J E, Kerstein, A R, McMurtry, P A, and Klewicki, J C. Long-tailed probability distributions in turbulent-pipe-flow mixing.  United States: N. p., 1997. 
        Web.  doi:10.1103/PhysRevE.56.1753.

Copy to clipboard


                    Guilkey, J E, Kerstein, A R, McMurtry, P A, & Klewicki, J C. Long-tailed probability distributions in turbulent-pipe-flow mixing.  United States.  https://doi.org/10.1103/PhysRevE.56.1753

Copy to clipboard


                    Guilkey, J E, Kerstein, A R, McMurtry, P A, and Klewicki, J C. 1997.  
        "Long-tailed probability distributions in turbulent-pipe-flow mixing".  United States.  https://doi.org/10.1103/PhysRevE.56.1753.

Copy to clipboard


                    
@article{osti_528023,

  title        = {Long-tailed probability distributions in turbulent-pipe-flow mixing},

  author       = {Guilkey, J E and Kerstein, A R and McMurtry, P A and Klewicki, J C},

  abstractNote = {Exponential-tailed scalar probability density functions (PDF{close_quote}s) are obtained by high-pass filtering scalar concentration time series measured in turbulent pipe flow. This behavior reflects the scale separation of scalar and velocity fluctuations that develops in this flow, such that the low-wave-number scalar fluctuations act as an imposed scalar gradient stirred by finer-scale wall-generated shear. This observation broadens the class of flows in which long-tailed scalar PDF{close_quote}s are anticipated to occur. {copyright} {ital 1997} {ital The American Physical Society}},

  doi          = {10.1103/PhysRevE.56.1753},

  url          = {https://www.osti.gov/biblio/528023},
  journal      = {Physical Review. E, Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics},
number       = 2,

  volume       = 56,

  place        = {United States},

  year         = {Fri Aug 01 00:00:00 EDT 1997},

  month        = {Fri Aug 01 00:00:00 EDT 1997}

}

Copy to clipboard

Journal Article:

https://doi.org/10.1103/PhysRevE.56.1753

Other availability

Find in Google Scholar

Search WorldCat to find libraries that may hold this journal

Save / Share:

Export Metadata

Save to My Library

Similar records in OSTI.GOV collections:

Probability distribution, conditional dissipation, and transport of passive temperature fluctuations in grid-generated turbulence

Journal Article Jayesh, ; Warhaft, Z - Physics of Fluids A; (United States)

The evolution of the scalar probability density function (pdf), the conditional scalar dissipation rate, and other statistics including transport properties are studied for passive temperature fluctuations in decaying grid-generated turbulence. The effect of filtering and differentiating the time series is also investigated. For a nonzero mean temperature gradient it is shown that the pdf of the temperature fluctuations has pronounced exponential tails for turbulence Reynolds number (Re{sub {ital l}}) greater than 70 but below this value the pdf is close to Gaussian. The scalar dissipation rate, conditioned on the fluctuations, shows that there is a high expectation of dissipation inmore »« less
https://doi.org/10.1063/1.858469
Mixing mechanisms in turbulent pipe flow

Journal Article Guilkey, J; Kerstein, A; McMurtry, P; ... - Physics of Fluids (1994)

An experimental investigation of passive scalar mixing in turbulent pipe flow is carried out using a new non-intrusive scalar initialization technique. The measurements support a recently predicted similarity scaling of concentration spectra in flows that are unbounded in one direction. Reflecting this scaling, the scalar variance exhibits a power-law rather than exponential decay, indicating that the traditional plug-flow reactor picture of turbulent pipe-flow mixing omits key physical mechanisms.{copyright} {ital 1997 American Institute of Physics.}
https://doi.org/10.1063/1.869211
On passive scalar derivative statistics in grid turbulence

Journal Article Tong, C; Warhaft, Z - Physics of Fluids; (United States)

The probability density function, and related statistics, of scalar (temperature) derivative fluctuations in decaying grid turbulence with an imposed cross-stream, passive linear temperature profile, is studied for a turbulence Reynolds number range, Re[sub [ital l]], varying from 50 to 1200, (corresponding to a Taylor Reynolds number range 30[lt][ital R][sub [lambda]][lt]130). It is shown that the temperature derivative skewness in the direction of the mean gradient, [ital S][sub [theta][ital y]] has a value of 1.8[plus minus]0.2 (twice the value observed in shear flows), and has no significant variation with Reynolds number. The ratio of the temperature derivative standard deviation along themore »« less
https://doi.org/10.1063/1.868219
Probability density function method for variable-density pressure-gradient-driven turbulence and mixing

Conference Bakosi, Jozsef; Ristorcelli, Raymond

Probability density function (PDF) methods are extended to variable-density pressure-gradient-driven turbulence. We apply the new method to compute the joint PDF of density and velocity in a non-premixed binary mixture of different-density molecularly mixing fluids under gravity. The full time-evolution of the joint PDF is captured in the highly non-equilibrium flow: starting from a quiescent state, transitioning to fully developed turbulence and finally dissipated by molecular diffusion. High-Atwood-number effects (as distinguished from the Boussinesq case) are accounted for: both hydrodynamic turbulence and material mixing are treated at arbitrary density ratios, with the specific volume, mass flux and all their correlationsmore »« less
Full Text Available
Time-resolved velocities and turbulence in the oscillating flow of a pulse combustor tail pipe

Journal Article Keller, J; Dec, J; Hongo, I - Combustion and Flame; (USA)

The cyclic behavior of the oscillating velocity field in the tail pipe of a pulse combustor was studied using laser doppler velocimetry. In this flow, the oscillations result from an acoustic resonance and have amplitudes of up to 5 times the mean velocity. Oscillation frequencies were varied from 67 to 101 Hz. Streamwise velocity and turbulence-intensity boundary layer profiles were measured to within 130 {mu}m of the wall, and transverse turbulence measurements were made to within 2 mm. The phase relationships of the velocity, turbulence intensity, and combustion chamber pressure oscillations are compared. Velocity oscillations near the wall are foundmore »« less

Similar Records