| 不同流速比超声速混合层气动光学效应研究 |
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| 作者姓名： | 邢博阳 蔡 彬 杨 波 张 斌 |
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| 作者单位： | 上海交通大学 航空航天学院;上海航天控制技术研究所 |
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| 基金项目： | 上海航天技术研究院-上海交大航天先进技术联合研究中心资助项目 |
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| 摘 要： | 针对不同流速比混合层流场气动光学效应问题，首先采用大涡模拟数值方法进行了数值仿真，其次用光线追迹方法进行了气动光学效应仿真，最后对混合层的气动光学效应进行了评价。结果表明，混合层流场涡结构与光程差极小值存在一一对应关系，并且其流速比低的混合层气动光学效应更加严重。同时，研究了不同光学参数对斯特列尔比的影响，得到了相应的规律。
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| 关 键 词： | 混合层 气动光学 图像偏移 斯特列尔比 |
Aero-Optical Effect of Mixed Layer with Different Velocity Ratios |
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| Authors: | XING Boyang CAI Bin YANG Bo ZHANG Bin |
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| Institution: | School of Aeronautics and Astronautics, Shanghai Jiao Tong University;Shanghai Aerospace Control Technology Institute |
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| Abstract: | This paper aims at the problem of aero-optical effects in the mixing layer flow field with different velocity ratios. Firstly the large eddy simulation method is used for numerical simulation. Secondly the ray tracing method is used to simulate the aero-optical effects. Finally an aero-optical evaluation of the mixing layer is carried out. The results show that there is a remarkable correspondence between the vortex structure of the mixing layer flow field and the minimum optical path difference. The aero-optic effects of mixing layer with low velocity ratio is more serious than the others flow fields. Meanwhile, the effects of different optical parameters on Strehl ratio are studied and the corresponding laws are obtained. |
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| Keywords: | mixing layer aero-optic effects image shift Strehl ratio |
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