Numerical Research on Unsteady Effect of ShockShock Interference Flow
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摘要: 将AUSM+上风格式应用于数值模拟半球绕流激波碰撞干扰的流动中,揭示了该流动在定常来流条件下的非定常本质.分析弓形激波后超音速"喷流"的流动结构及其非定常效应的形成机制,提出一种新的激波碰撞干扰流动的非定常形成机理.Abstract: The ASUM+ scheme is applied to numerically simulate the shock-shock interference flow around a semiglobe under steady oncoming flow. The results show that the interference flow is inherently unsteady. The complicated flow structures of an unsteady supersonic jet behind the bow shock are analyzed and a new formation mechanism of the unsteady effect of the shock-shock interference flow is proposed.
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Key words:
- shockwave interference /
- non-steady flow /
- AUSM+ scheme
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