摘要
通过求解由BL湍流模型封闭的二维、轴对称及三维雷诺平均N S方程 ,数值模拟了等截面超声速扩压器中由激波 /附面层干扰诱导的复杂流场 ,比较了二维直管、圆截面直管及三维矩形截面直管中的流场特性、激波串长度及压强恢复程度。在来流马赫数为 3 0的二维直管计算中 ,采用四步Runge Kutta显式方法数值仿真了激波串自激振荡过程 。
Complicated flow field of shock/boundary layer interaction in the supersonic diffuser is simulated by solving the Reynolds averaged Navier stokes equations in 2D,axisymmetric and 3D cases. The length of shock train, the distance of each shocks in it and the level of pressure recovered are compared with each case. Also, the oscillation phenomenon of the shock train is captured through Runge Kutta method when the freestream mach number is 3 and the results are compared with experimental data.
出处
《国防科技大学学报》
EI
CAS
CSCD
北大核心
2002年第1期18-21,共4页
Journal of National University of Defense Technology
基金
湖南省自然科学基金资助项目 (99JJY2 0 0 5 )
国防科大基础研究资助项目 (JC0 1-0 1-0 0 2 )
关键词
超声速
激波串
数值仿真
扩压器
supersonic
shock train
numerical simulation
diffuser
