AUSM+格式在亚音、跨音和超音速流动数值模拟中的应用  

Application of AUSM+Scheme for Simulation of Viscous Flows in Subsonic,Transonic and Supersonic Range

作　　者：季鑫龙 赖焕新[2] 

机构地区：[1]华东理工大学理学院,上海200237 [2]华东理工大学机械与动力工程学院,上海200237

出　　处：《华东理工大学学报（自然科学版）》2014年第3期388-393,共6页Journal of East China University of Science and Technology

基　　金：国家自然科学基金项目(51176048)

摘　　要：在任意曲线坐标系下,采用有限体积法计算可压缩流动。利用AUSM+格式替换传统的Rhie-Chow动量插值方法,给出有限体积界面的速度和压力求解方式。为了适用于亚音速流动,通过预处理的方法给出了速度-压力耦合的表达式。算例考核结果表明,该算法在不可压流动到超音速的全范围内都有良好的适用性,而AUSM+格式的计算结果均优于Rhie-Chow动量插值方法。The governing equations of compressible flows are discretized using a finite volume method. Rhie-Chow＇s interpolation is replaced by the AUSM＋ scheme. Detailed procedure for calculating the velocity and pressure in the face of control volume is presented. The velocity-pressure coupling is obtained through a pre-conditioning method, which makes the AUSM＋ scheme applicable for flows at all speeds. The algorithm is widely validated by calculating the flows at all speeds, from subsonic, transonic to supersonic range. Results show that the AUSM＋ scheme is able to obtain better agreement with benchmark solutions, as compared with those using Rhie-Chow＇s interpolation method.

关 键 词：AUSM+格式 Rhie—Chow动量插值 可压缩流动 

分 类 号：O354.5[理学—流体力学]