Investigations of the Rayleigh-Taylor and Richtmyer-Meshkov Instabilities

[摘要] The present program is centered on the experimental study of shock-induced interfacial fluid instabilities. Both 2-D (near-sinusoids) and 3-D (spheres) initial conditions are studied in a large, vertical square shock tube facility. The evolution of the interface shape, its distortion, the modal growth rates and the mixing of the fluids at the interface are all objectives of the investigation. In parallel to the experiments, calculations are performed using the Raptor code, on platforms made available by LLNL. These flows are of great relevance to both ICF and stockpile stewardship. The involvement of four graduate students is in line with the national laboratories' interest in the education of scientists and engineers in disciplines and technologies consistent with the labs' missions and activities.

[发布日期] 2008-03-14

[学科分类] 原子、分子光学和等离子物理

[关键词] RAYLEIGH-TAYLOR INSTABILITY;FLUID MECHANICS;SHOCK TUBES;STOCKPILES;ICF DEVICES;RESEARCH PROGRAMS Rayleigh-Taylor Instability;Richtmyer-Meshkov Instability;Shock Induced Instability