超声速、高超声速粘性气体分离流动的显隐式差分解法

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A Mixed Explicit-Implicit Antidiffusive Method of Navier-Stokes Eguations for Supersonic and Hypersonic Separated Flow

摘要: 本文利用反扩散的两步显、隐式差分方法,求解了超声速、高超声速粘性气体绕二维、三维压缩拐角的层流和湍流分离运动.结果表明,它既能获得很好的精度,又能大大缩短计算机时.

Abstract: In this paper, a mixed explicit-implicit scheme based on an antidiffusive method is used to solve the Navier-Stokes equations for the supersonic and hypersonic separated flows. The computations are performed for laminar and turbulent flows over the two-and three-dimensional compression corners, The obtained results are compared with the results of numerically computing NS equations^[1,3-5] and these results of the experiments^[6,7].The computations show that the numerical scheme in this paper is satisfactory.

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