Solutions to Buoyancy-Drag Equation for Dynamical Evolution of Rayleigh-Taylor and Richtmyer-Meshkov Mixing Zone

• 来源期刊: 理论物理通讯：英文版
• 学科: 地球科学
• 关键词: 动力学演化 混合区 瑞利 泰勒 方程 浮力 拖曳 自相似参数
• 年，卷（期）: 2011,（10）
• 页码范围: 751-755
• 页数: 5页
• 分类号: O4-09|P15
• 语种: 英文

摘要

With a self-similar parameter b（At） = Hi/λi, where At is the Atwood number, Hi and λi are the a.mplluae and wavelength of bubble （i = 1） and spike （i = 2） respectively, we derive analytically the solutions to the buoyancy-drag equation recently proposed for dynamical evolution of Rayleigh-Taylor and Richtmyer-Meshkov mixing zone. Numerical solutions are obtained with a simple form ofb（At）--- 1/（1 ＋ At） and comparisons with recent LEM （linear electric motor） experiments are made, and an agreement is found with properly chosen initial conditions.