In this paper, two time stepping schemes, explicit four-stage Runge-Kutta scheme and implicit LU-SGS scheme, are employed to solve the governing equations.

• 在时间推进上,分别采用显式四步Runge-Kutta和隐式LU-SGS推进方法,对主控方程与湍流模型方程进行耦合求解,虽然本文工作侧重于定常绕流的数值模拟,但从原理上说,本文所开发的LU-SGS定常计算程序只需略做修改即可实现非定常流动模拟;