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边界层转捩过程中环状涡和尖峰结构的演化 被引量:3

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摘要 采用高精度直接数值模拟方法,研究在边界层转捩过程后阶段中的环状涡和尖峰结构的非线性演化及其对流动的影响.以平板可压缩流边界层转捩为例,精细的数值模拟清楚地展示了环状涡等典型的涡结构及其上喷和下扫的流动现象,证实了边界层转捩过程中尖峰结构的形成与环状涡紧密相关,特别是,对于最近在实验中观测到的正尖峰结构,文中的数值结果也发现同样的结构,并进行了相应的机理分析.
出处 《中国科学(G辑)》 CSCD 北大核心 2009年第10期1520-1526,共7页
基金 国家自然科学基金(批准号:10772082) AFOSR(批准号:FA9550-08-1-0201)资助项目
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