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Direct simulation Monte Carlo investigation of the Richtmyer-Meshkov instability

Journal Article · · Physics of Fluids
DOI:https://doi.org/10.1063/1.4928338· OSTI ID:1235325
The Richtmyer-Meshkov instability (RMI) is investigated using the Direct Simulation Monte Carlo (DSMC) method of molecular gas dynamics. Due to the inherent statistical noise and the significant computational requirements, DSMC is hardly ever applied to hydrodynamic flows. Here, DSMC RMI simulations are performed to quantify the shock-driven growth of a single-mode perturbation on the interface between two atmospheric-pressure monatomic gases prior to re-shocking as a function of the Atwood and Mach numbers. The DSMC results qualitatively reproduce all features of the RMI and are in reasonable quantitative agreement with existing theoretical and empirical models. The DSMC simulations indicate that there is a universal behavior, consistent with previous work in this field that RMI growth follows.
Research Organization:
Sandia National Laboratories (SNL-NM), Albuquerque, NM (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA)
Grant/Contract Number:
AC04-94AL85000
OSTI ID:
1235325
Report Number(s):
SAND--2015-1855J; 579670
Journal Information:
Physics of Fluids, Journal Name: Physics of Fluids Journal Issue: 8 Vol. 27; ISSN 1070-6631; ISSN PHFLE6
Publisher:
American Institute of PhysicsCopyright Statement
Country of Publication:
United States
Language:
English

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  • Gallis, M. A.; Koehler, T. P.; Torczynski, J. R.
  • 30TH INTERNATIONAL SYMPOSIUM ON RAREFIED GAS DYNAMICS: RGD 30, AIP Conference Proceedings https://doi.org/10.1063/1.4967552
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On the Suppression and Distortion of Non-Equilibrium Fluctuations by Transpiration text January 2019