RT instability in cylindrical implosion of jelly ring

作     者：杨礼兵 廖海东 孙承纬 欧阳凯 李军 黄显宾 

作者机构：InstituteofFluidPhysicsCAEPP.O.Box919-108Mianyang621900China 

出 版 物：《Chinese Physics B》 (中国物理B（英文版）)

年 卷 期：2004年第13卷第10期

页      面：1747-1752页

核心收录：

学科分类：080704[工学-流体机械及工程] 08[工学] 0807[工学-动力工程及工程热物理] 

基　　金：the National Natural Science Foundation of China (Grant 10035030) 

主　　题：hydrodynamic instability perturbation jelly ring 

摘      要：The interfacial RT instability experiments on imploding jelly liners in cylindrically convergent geometry have been performed. The liner s instability growth was observed clearly with a high-speed framing camera. Jelly liners have different initial perturbation forms on their inner and outer interfaces, being either smooth or sinusoidal. The initial perturbations also have different magnitudes and spatial frequencies (for example, mode n=5, 10, 20). The experimental results show that the growth and coupling of perturbations on inner and outer surfaces are remarkably ***, the relevant 2-D numerical simulation of hydrodynamics combined with Level Set method has been performed. Using the numerical code, we can design the parameters of imploding jelly liner, and predict the experimental results. The results of simulation are demonstrated to be in good agreement with the measured data in a series of experiments.