| 考虑熵层效应的扫掠激波/湍流边界层干扰特性研究 |
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| 作者姓名： | 李宪开 盛发家 李佳伟 尹超 何墨凡 周航 柳军 |
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| 作者单位： | 1.国防科技大学, 湖南长沙 410073 |
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| 基金项目： | 基础加强计划重大基础研究项目沈阳所扬州院课题20-YJ.ZZ-YZ-M-JCJQ-22 |
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| 摘 要： | 为了探究熵层对扫掠激波/湍流边界层干扰特性的影响规律，采用仿真方法对尖鳍/钝板物理模型进行研究。结果表明:扫掠激波上游的熵层厚度随着平板前缘钝化半径的增大而增加，同时边界层厚度也随着熵层厚度的增加而增加。熵层的引入并不改变扫掠激波/湍流边界层干扰固有的准锥形相似特性，也不会改变拟锥原点（virtual conical origin，VCO）的位置，仅会改变干扰形成的上游影响线和分离线的角度。扫掠激波/湍流边界层干扰形成的锥形主旋涡和角涡的尺度随着熵层厚度的增加而增大。上游熵层的引入增大了下游扫掠激波/湍流边界层干扰区的总压损失，但扫掠激波/湍流边界层干扰自身造成的相对总压损失并不受上游熵层的影响。
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| 关 键 词： | 熵层 扫掠激波/湍流边界层干扰 锥形相似 旋涡 总压损失 |
| 收稿时间： | 2022-09-02 |
Investigation on Flow Characteristics of Swept Shock/Turbulent Boundary Layer Interaction Considering Entropy Layer Effect |
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| Affiliation: | 1.University of Defense Technology, Changsha 410073, China2.Yangzhou Collaborative Innovation Research Institute, Shenyang Aircraft Design & Research Institute, Yangzhou 225000, China |
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| Abstract: | In order to explore the effect of entropy layer on swept shock/turbulent boundary layer interaction, numerical simulation was applied to study a fin/blunt plate physical model. The results show that the thickness of the entropy layer upstream of the swept shock wave increases with the increase of the passivation radius at the leading edge of the plate, and the thickness of the boundary layer also increases with the increase of the thickness of the entropy layer. The introduction of the entropy layer does not change the quasi-conical similarity of swept shock/turbulent boundary layer interaction, nor does it change the position of VCO. It only changes the angle of upstream influence line and separation line. As the thickness of the entropy layer increases, the scales of the conical main vortex and the corner vortex formed by the swept shock/turbulent boundary layer interaction increase. The upstream entropy layer increases the total pressure loss in the downstream swept shock/turbulent boundary layer interaction region, but the relative total pressure loss caused by swept shock/turbulent boundary layer interaction is not affected by the upstream entropy layer. |
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