流固耦合数值方法在点爆发散爆轰驱动平板飞片中的应用

采用Eulerian/Lagrangian耦合方法对炸药与飞片直接接触的爆轰驱动问题进行了数值模拟.其中对炸药和环境气体应用Euler方法、对飞片应用Lagrange方法分别计算,流体与固体接触面采用Ghost Fluid方法和外插技术进行处理,全程模拟了炸药起爆、爆轰波传播、大板变形和运动等过程,着重分析了大板飞片后...

Application for fluid-solid coupling numerical method in the motion of flyer driven by slab explosive initiated at center point

A numerical simulation is performed for detonation driving problem of slab explosive initiated at center point by employing Eulerian/Lagrangian coupling method in this paper.Eulerian method is conducted to simulate explosive and ambient gas,and Largangian method to track flyer motion and deformation.Ghost Fluid method is adopted to solve the contact surface between fluid and solid.The entire processes,including ignition process of explosive,propagation of detonation wave,deformation and motion of flyer,are ...