EXPERIMENTAL STUDY ON THE MECHANISM OF THE RICHTMYERMESHKOV INSTABILITY AT A GAS-LIQUID INTERFACE  

作　　者：SHI Hong-hui ZHANG Ga DU Kai JIA Hui-xia 

机构地区：[1]College of Mechanical Engineering and Automation, Zhejiang University of Science and Technology, Hangzhou 310018, China

出　　处：《Journal of Hydrodynamics》2009年第3期423-428,共6页水动力学研究与进展B辑（英文版）

基　　金：supported by the National Natural Science Foundation of China (Grant No. 10672144);the Natural Science Foundation of Zhejiang Province (Grant No. Y107073)

摘　　要：The mechanism of the Richtmyer-Meshkov instability was experimentally studied in a vertical rectangular shock tube. The velocity of the interface driven by the shock wave was measured by a self-designed measurement system, which consists of semiconductor lasers, signal amplification circuits, digital oscilloscope and computer. Tests were carded out at several shock wave Mach numbers. In addition, the movement of the interface and the variation of the mixed zone width with time were recorded by high-speed photography. The experimental results show that the interface velocity increases with the increase of the Mach number, and the distance of the interface＇s movement and the width of the mixed zone vary with time in a linear relationship.The mechanism of the Richtmyer-Meshkov instability was experimentally studied in a vertical rectangular shock tube. The velocity of the interface driven by the shock wave was measured by a self-designed measurement system, which consists of semiconductor lasers, signal amplification circuits, digital oscilloscope and computer. Tests were carded out at several shock wave Mach numbers. In addition, the movement of the interface and the variation of the mixed zone width with time were recorded by high-speed photography. The experimental results show that the interface velocity increases with the increase of the Mach number, and the distance of the interface＇s movement and the width of the mixed zone vary with time in a linear relationship.

关 键 词：Richtmyer-Meshkov instability shock wave shock tube LASER INTERFACE 

分 类 号：O35[理学—流体力学] TQ021.4[理学—力学]