摘要
在剪切应力输运和弱非线性k-ω模式中引入压缩性修正,并在此基础上构造RANS/LES混合方法,对包含丰富流动结构和复杂流动机理的导弹类超声速底部流场进行数值分析,发现压缩性修正可更好地描述流场特征,适于具有较强压缩性效应流动的数值分析;混合方法捕捉到丰富的流动现象及非定常特性.
RANS/LES hybrid methods are developed on the basis of shear stress transport and weakly nonlinear k-ω models with compressible corrections. Supersonic flowfields behind a cylindrical afterbedy are investigated to explore rich flow structures and aerodynamic characteristics. Compressible correction shows good agreement with experiment. Results by hybrid methods present detailed and reasonable flow structures, turbulence information and unsteady characteristics.
出处
《计算物理》
EI
CSCD
北大核心
2009年第2期221-230,共10页
Chinese Journal of Computational Physics
基金
国家自然科学基金(No.10502030和10302015)
航天创新及支撑基金资助项目
