Three-dimensional high-resolution simulations of Rayleigh-Taylor instability and turbulent mixing
Preliminary results of three-dimensional simulations of compressible Rayleigh-Taylor instability and turbulent mixing in an ideal gas using the piecewise-parabolic method (PPM) (with and without molecular dissipation terms) are presented. Simulations with spatial resolutions up to 512{sup 3} were performed. Two types of convergence studies are presented. Statistical analyses of the data are discussed, include: 1: spectra, and; 2) horizontally-averaged terms in the kinetic energy and onstrophy density evolution equations. The application of this statistical data to the development and testing of subgrid-scale models appropriate for compressible Rayleigh-Taylor instability-induced turbulent mixing is discussed.
- Research Organization:
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- W-7405-ENG-48
- OSTI ID:
- 292203
- Report Number(s):
- UCRL-JC-125308-Rev.1; CONF-970657-; ON: DE98054341; BR: DP0101031
- Resource Relation:
- Conference: 6. international workshop on physics of compressible turbulent mixing, Marseille (France), 18-21 Jun 1997; Other Information: PBD: 1 Jun 1997
- Country of Publication:
- United States
- Language:
- English
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