LU-AUSM^+混合格式在三维可压缩流动数值分析中的应用  

Three-Dimension Compressible Flow Using a LU-AUSM^+ Scheme

作　　者：赵兴艳[1] 苏莫明[2] 苗永淼[1] 

机构地区：[1]西安交通大学,西安710049 [2]西北工业大学

出　　处：《西安交通大学学报》2000年第5期9-12,共4页Journal of Xi'an Jiaotong University

基　　金：机械工业部科研基金资助项目!(97251420)

摘　　要：将一维AUSM+ 格式扩展到三维任意曲线坐标 .为了获得高阶精度 ,采用了三阶MUSCL格式 .将AUSM+ 格式与LU SGS格式结合 ,对凸包通道跨音速无粘流动、平面叶栅跨音速和超音速无粘流动 ,以及喷管超音速粘性流动进行了数值模拟 .计算结果与文献计算结果和试验数据相符很好 .The AUSM + scheme is extended to the multidimensional hyperbolic conservation laws for curvilinear coordinates. Higher order accuracy is obtained using the monotonic upwind centered scheme for conservation laws (MUSCL). It combines with the LU SGS scheme and applies to transonic inviscid flow about a circular arc bump, transonic and supersonic inviscid flows in the cascade built of two circular arc blades, and supersonic viscous flow in convergent divergent nozzles. The computed results are compared with the experimental data and the other numerical results available in literature. The agreements are good. In conclusion, LU AUSM + schemes can be applied effectively to complex compressible flow problems.

关 键 词：可压缩流动 激波 数值分析 LU-AUSM^+混合格式 

分 类 号：O354[理学—流体力学]