| 气动光学效应湍流脉动模型系数修正 |
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| 引用本文： | 潘宏禄,李俊红,程晓丽,马汉东. 气动光学效应湍流脉动模型系数修正[J]. 计算物理, 2018, 35(2): 194-204. DOI: 10.19596/j.cnki.1001-246x.7603 |
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| 作者姓名： | 潘宏禄 李俊红 程晓丽 马汉东 |
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| 作者单位： | 中国航天空气动力技术研究院, 北京 100074 |
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| 基金项目： | 国家自然基金（1102199，11402254）资助项目 |
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| 摘 要： | 以光学窗口的气动光学效应研究为背景，研究影响光学传输预测的流场湍流脉动量预测.选取平板、压缩拐角、凹腔流动模型，采用大涡模拟（LES）方法研究超声速湍流脉动工程预测模型的系数修正.结果表明：LES方法能够获得无激波干扰、强激波干扰及底部大分离条件下，湍流密度脉动的定量分布，并据此给出脉动工程模型的系数修正，结果已经应用于型号飞行器的光学窗口气动光学效应预测.
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| 关 键 词： | 气动光学效应 湍流 超声速边界层 分离流动 大涡模拟 |
| 收稿时间： | 2016-12-13 |
| 修稿时间： | 2017-01-20 |
Model Coefficient Revision on Supersonic Turbulent Pulse for Aero-Optic Effect |
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| PAN Honglu,LI Junhong,CHENG Xiaoli,MA Handong. Model Coefficient Revision on Supersonic Turbulent Pulse for Aero-Optic Effect[J]. Chinese Journal of Computational Physics, 2018, 35(2): 194-204. DOI: 10.19596/j.cnki.1001-246x.7603 |
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| Authors: | PAN Honglu LI Junhong CHENG Xiaoli MA Handong |
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| Affiliation: | China Academy of Aerospace Aerodynamics, Beijing 100074, China |
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| Abstract: | Aero-optic effect is investigated in supersonic/hypersonic flow. Flat plate, ramp and cave model in supersonic/hypersonic flow condition are studied with large eddy simulation (LES). Turbulent density pulse is predicted to verify coefficient of density pulse model-mixing length (ML) model. It indicates that LES method simulates turbulent density pulse well in flat plate boundary layer flow, oblique shock wave/boundary layer interaction and strong separation flow. Density pulse data obtained by LES is used to verify ML coefficient and set a quantitative result. The modified ML was used to predict aero-optical effect on missile successfully. |
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| Keywords: | aero-optic turbulence supersonic boundary layer separation flow large eddy simulation |
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