关键词: 网格生成, 数值流动显示, 激波, 非定常流

Abstract: In order to analyse the transport phenomena of obligue shock-wave, 2-D nonstationary obligue shock-wave reflections over compressive wedges in perfect air are investigated by using numerical simulation technigues in this paper. The operator splitting method, the MacCormarck scheme, the FCT modification (instead of the FCT method with the control volume ) and the adaptive grid generation technigues are used in the numerical simulation. The four composed cases in which the shock-wave Mach number (Mas) are 1.027 and 4.0, and the oblique wall angles (w) are 10 and 30 , are calculated. The results show that the three reflection shapes the regular reflection (RR), the simple Mach reflection (SMR) and composite Mach reflection (CMR), obtained by the classical pseudostationary theoretical analysis are in good agreement with the experimental results in references.

Key words: grid generation, numerical simulation, shock-wave, unstead flow