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A comparison of three approaches to compute the effective Reynolds number of the implicit large-eddy simulations

Journal Article · · Journal of Fluids Engineering
DOI:https://doi.org/10.1115/1.4032532· OSTI ID:1262169
 [1];  [2]
  1. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
  2. The Univ. of Sydney, Sydney, NSW (Australia)
Here, the implicit large-eddy simulation (ILES) has been utilized as an effective approach for calculating many complex flows at high Reynolds number flows. Richtmyer–Meshkov instability (RMI) induced flow can be viewed as a homogeneous decaying turbulence (HDT) after the passage of the shock. In this article, a critical evaluation of three methods for estimating the effective Reynolds number and the effective kinematic viscosity is undertaken utilizing high-resolution ILES data. Effective Reynolds numbers based on the vorticity and dissipation rate, or the integral and inner-viscous length scales, are found to be the most self-consistent when compared to the expected phenomenology and wind tunnel experiments.
Research Organization:
Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
AC52-07NA27344
OSTI ID:
1262169
Report Number(s):
LLNL-JRNL--667942
Journal Information:
Journal of Fluids Engineering, Journal Name: Journal of Fluids Engineering Journal Issue: 7 Vol. 138; ISSN 0098-2202
Publisher:
American Association of Mechanical Engineers (ASME)
Country of Publication:
United States
Language:
English

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