【摘 要】
：
在超声速和高超声速流动的数值模拟研究中,许多常用的数值方法在捕捉激波时可能产生激波不稳定问题.现有的旋转格式以及旋转混合格式能较好的抑制激波不稳定问题,但是计算效
【机 构】
：
中国科学院力学研究所高温气体动力学国家重点实验室,北京海淀区100190
【出 处】
：
高温气体动力学国家重点实验室2014年度夏季学术研讨会
论文部分内容阅读
在超声速和高超声速流动的数值模拟研究中,许多常用的数值方法在捕捉激波时可能产生激波不稳定问题.现有的旋转格式以及旋转混合格式能较好的抑制激波不稳定问题,但是计算效率偏低.本文提出一种新的混合格式,即利用一种新的、有效的激波识别方法,在激波间断区使用能抑制激波不稳定的激波捕捉格式,其它区域使用低耗散格式.数值算例验证表明,新的混合格式既能有效的抑制激波不稳定问题,又能较好的模拟激波/边界层干扰等复杂流动问题,且具有较高的计算效率.
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