AUSM类格式在热流数值模拟中的比较研究

摘要

系统分析了AUSM类空间离散格式中AUSM+、AUSMDV及AUSMPW三种格式的构造方法及特点,并分别对钝锥、钝双锥的高超粘性绕流流场进行了数值模拟,重点分析了格式对热流数值模拟结果的影响.数值结果表明:AUSM类格式在高超音速流动模拟中具有高间断分辨率和数值稳定性,其中AUSM+和AUSMPW格式更适用于热流数值模拟,而AUSMDV格式可能会出现“红玉”现象.%This paper has analyzed the construction method and algorithm characteristics of AUSM +、AUSMDV and AUSMPW schemes.The hypersonic viscous flow around blunt cone and biconic model are simulated and the effects of above three schemes on the heat flux numerical simulation results were analyzed.Numerical results show that AUSM-type schemes possess high resolution near shock discontinuities and robustness.Moreover,AUSM + and AUSMPW schemes are suitable in application of heat flux numerical simulation,and carbuncle phenomenon should be aware when AUSMDV scheme is adopted.