激波诱导圆柱运动数值模拟  

Numerical Simulation of Shock Wave-induced Motion of a Cylinder

作　　者：谭俊杰[1] 张军[1] 耿继辉[1] 

机构地区：[1]南京理工大学动力工程学院,南京210094

出　　处：《南京理工大学学报》2003年第5期578-582,共5页Journal of Nanjing University of Science and Technology

基　　金：国家自然科学基金 (5 9976 0 13) ;国防科技预研行业基金项目

摘　　要：该文采用基于含有运动边界自适应非结构网格点的显式有限体积方法求解Euler方程 ,提出了一种运动边界的数值处理方法 ,对激波诱导的圆柱运动进行了数值模拟。由于物体的运动 ,物体边界附近的网格将发生变形。对运动边界附近严重变形的网格采用局部网格重新生成的方法进行处理。采用HLLC方法来处理运动边界问题 ,计算并比较了气流流过静止圆柱和圆柱在静止流场中运动 2种情形。结果表明 ,应用HLLC方法处理运动边界是可行的。The motion of a cylinder induced by shock waves is numerically simulated in this article. A numerical treatment is proposed to deal with moving boundaries. The explicit finite volume method based on unstructured adaptive meshes is employed to solve Euler Equations. Seriously deformed grids in the vicinity of a moving object are handled by using a local mesh regeneration method. The HLLC method is adopted to cope with the moving boundary conditions. Flows around a static cylinder and around a moving cylinder in a static flow field are calculated to validate the proposed numerical treatment. The numerical results indicate that the HLLC method is feasible to deal with moving boundary.

关 键 词：运动边界 HLLC方法 激波 数值模拟 非结构网格 

分 类 号：O35[理学—流体力学]