A Comparison Study on Performance of Gas-water and Gas-gas Interfaces under Shock Impact

摘要：

　　Numerical simulations of gas-water and gas-gas interfaces under shock impact are performed using the high order accurate Runge-Kutta discontinuous Galerkin (RKDG) method in compressible multiphase flows.The ghost fluid method (GFM) or modified ghost fluid method (MGFM) is employed to track the movement of the multi-medium interfaces.The level set equation is solved by using the RKDG method for Hamilton-Jacobi equations,resulting in a unified DG solver for the coupled problem.Numerical results show that shock can easily pass through gas-gas interface,while shock will be reflected mostly by gas-water interface,which can be used to explain how the sheet cavitation caused by underwater explosion comes into being.

关键词： Numerical Simulation RKDG Method Multiphase flows Level Set GFM

作者: Junwu Tian Xiangjiang Yuan

作者单位: China Academy of Aerospace Aerodynamics, Beijing 100074, China

会议类型: 国际会议

会议名称: The 8th International Conference of Computational Fluid Dynamics, (ICCFD8)(第八届国际计算流体力学会议)

会议地点: 成都

会议语种:英文

页码: 1-6

在线出版日期: 2014-07-25（万方平台首次上网日期，不代表论文的发表时间）