GRP格式推广用于多维复杂流动的数值计算  

Extending GRP Scheme to Numerical Calculations of Multi-Dimensional Complex Flow

作　　者：吴清松[1] 董海波[1] 

机构地区：[1]中国科学技术大学,合肥230026

出　　处：《空气动力学学报》1997年第2期261-268,共8页Acta Aerodynamica Sinica

基　　金：国家自然科学基金

摘　　要：采用算子分裂技术，将原始求解一线流动问题的高精度、高分辨率GRP格式推广用于包含各种不同间断解及其相互作用的多维复杂流动计算。以轴对称管端出口处激波绕射传播为例，作了数值模拟，得到与实验结果吻合很好的流场精细结构。In this paper, by using an operator-splitting technique,the high resolution GRP scheme which originally solves the one-dimen-sional flow is extended to calculating the multi-dimensional complex flow with discontinuities and interactions. As a calculational example,the shock diffraction propagation near the open end of a cylindrical tube has been simulated numerically, and the elaborate patterns of the complex flow field have been obtained which are in better agreement with the experimental shadowgraphs than that by TVD scheme.

关 键 词：复杂流动 激波绕射 GRP格式 算子分裂 数值计算 

分 类 号：V211.3[航空宇航科学与技术—航空宇航推进理论与工程]