Modeling and Simulation of Fluid Mixing Laser Experiments and Supernova

James Glimm

关键词: DIFFUSION;    LASERS;    PHYSICS;    SIMULATION High Energy Density Physics;    Turbulent Mixing;   

DOI  :  10.2172/953763
RP-ID  :  DOE/NA/26208-3
PID  :  OSTI ID: 953763
Others  :  TRN: US201008%%463

学科分类：自然科学（综合）

美国|英语

来源: SciTech Connect

【 摘 要 】

The three year plan for this project was to develop novel theories and advanced simulation methods leading to a systematic understanding of turbulent mixing. A primary focus is the comparison of simulation models (Direct Numerical Simulation (DNS), Large Eddy Simulations (LES), full two fluid simulations and subgrid averaged models) to experiments. The comprehension and reduction of experimental and simulation data are central goals of this proposal. We model 2D and 3D perturbations of planar or circular interfaces. We compare these tests with models derived from averaged equations (our own and those of others). As a second focus, we develop physics based subgrid simulation models of diffusion across an interface, with physical but no numerical mass diffusion. Multiple layers and reshock are considered here.