HLLC方法在二维非结构动网格上的应用  

Application of HLLC Method in 2D Unstructure Meshes with Moving Boundaries

作　　者：张军[1] 谭俊杰[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6期678-681,共4页Journal of Nanjing University of Science and Technology

基　　金：国防科技预研跨行业基金项目

摘　　要：以自适应非结构网格的显式有限体积法为基础,采用格心方法以及基于近似黎曼解的Godunov一阶精度方法求解Euler方程,使用HLLC近似黎曼解的方法计算网格单元边界处的守恒量通量,空间和时间都是一阶精度,对含有运动边界的多体干扰流场进行了数值模拟,并对数值模拟的结果进行了分析,为进一步进行多体分离数值模拟打下了基础。An unsteady flow field with moving boundaries is simulated and an algorithm for solving 2D unsteady Eulerian equations is used based on unstructured adaptive meshes. The algorithm is based on the first-order accurate in time and space, explicit time stepping, approximate Riemann solution method known as HLLC. The cell centered , finite-volume approach is used and flows around a static cylinder and a moving cylinder in a shock pipe are simulated. Simulational results are analyzed and prepared for the advanced numerical simulation of multi-bodies separation.

关 键 词：非结构网格 Godunov格式 有限体积 数值模拟 运动边界 

分 类 号：O35[理学—流体力学]