摘要
讨论了非结构网格高超声速化学非平衡绕流流场的分布式并行数值模拟方法。控制方程采用带化学反应源项的N-S方程,数值离散格式采用Jameson有限体积法。化学反应模型为五组元五反应模型,没有考虑电离效应,对化学反应源项进行了点隐式处理,温度场的计算采用牛顿迭代法。通过调用METIS库函数将整体计算区域进行分裂,使用PVM并行机制在PCs-Cluster机群上对二维钝头体高超声速化学非平衡绕流进行了分布式并行计算,得到了结果,并对算法的加速特性进行了对比分析。
A distributed parallel algorithm for hypersonic flow with non-equilibrium chemical reactions is presented. The numerical method of Jameson＇s finite volume scheme is implemented to N-S equations.The chemical reaction model is considered as a five specie and five reaction model and the ionization effect is not considered. The point implicit scheme is used for the chemical source and the Newton iterative method is used in the calculation of the temperature distribution. The domain decomposition method （DDM） based on the software METIS splits the global domain into sub-domains. Results for the hypersonic blunt cone body are obtained on PCs-Cluster with PVM protocol, and the speed-up characteristic is compared with different sub-domains/processors。
出处
《南京航空航天大学学报》
EI
CAS
CSCD
北大核心
2005年第4期431-435,共5页
Journal of Nanjing University of Aeronautics & Astronautics
基金
国家自然科学基金(10402013)资助项目。
关键词
高超声速
化学非平衡
有限体积法
区域分裂
并行算法
hypersonic
chemical non-equilibrium
finite volume method
domain decomposition method
paralle algorithm
