含运动变形物体流场的数值模拟

基于含拓扑结构改变、可变形运动网格生成技术及动边界条件下的数值处理方法,对爆炸波通过有限入口进入建筑物内部的透射(infiltration)现象进行直接模拟.系统研究入口处门板不同运动、变形、脱落方式下,爆炸波在建筑物内部的传播过程和内壁面上的爆炸载荷,直接模拟门与挡板的碰撞、门的断裂及破片的抛洒过程.结果表明,所发展的用于含拓扑结构改变的运动可变形物体流场计算方法对该类问题的直接模拟行之有效.

Numerical Simulation of Flow Field with Moving and Deforming Objects

Infiltration of blast waves in a structure with limited opening in the front wall is investigated numerically.Numerical methods deal with generation of moving and deforming unstructured mesh,moving boundary condition and topological change of geometry are used to blast-structure interactions.Movements of door located at the opening,collision of door with a baffle,fracture of door and displacement of fragment are considered.It is concluded that the methods are suitable to deal with blast-structure interactio...