| 基于非湍流脉动动能方程的高超声速转捩预测 |
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| 引用本文： | 宋博,李椿萱.基于非湍流脉动动能方程的高超声速转捩预测[J].北京航空航天大学学报,2010,36(2):244-247. |
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| 作者姓名： | 宋博 李椿萱 |
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| 作者单位： | 北京航空航天大学航空科学与工程学院,北京,100191;北京航空航天大学航空科学与工程学院,北京,100191 |
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| 摘 要： | 通过求解基于稳定性理论的非湍流脉动动能输运方程,预测了来流Ma为5.91的裙锥绕流流动的层流-湍流转捩点,并采用SST(Shear-Stress Transport)湍流模型结合代数间歇因子模型对转捩流场进行了数值模拟.结果表明非湍流脉动动能输运方程模型可以很好地捕捉逆压梯度对转捩前期边界层内的不稳定波动频率的影响.等温壁面条件下计算得到的转捩位置与静风洞实验结果基本一致.壁面冷却促进第2模态不稳定波动的增长,使转捩提前发生.代数间歇因子模型模拟高马赫数流动的转捩区长度较短,温度峰值偏低.
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| 关 键 词： | 非湍流脉动动能 转捩预测 静风洞 |
| 收稿时间： | 2009-06-19 |
Laminar-to-turbulent transition onset prediction of hypersonic flows based on laminar kinetic energy equation |
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| Song Bo,Lee Chun-Hian.Laminar-to-turbulent transition onset prediction of hypersonic flows based on laminar kinetic energy equation[J].Journal of Beijing University of Aeronautics and Astronautics,2010,36(2):244-247. |
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| Authors: | Song Bo Lee Chun-Hian |
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| Institution: | School of Aeronautic Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China |
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| Abstract: | Onset locations of laminar-to-turbulent transition were predicted for flared-cones with freestream Ma of 5.91 by solving a laminar kinetic energy transport equation based on the linear stability theory numerically.The transitional flowfields were simulated by employing the shear-stress transport(SST) turbulence model,in conjunction with an algebraic intermittency model.Numerical results demonstrate that the current laminar kinetic energy transport equation is capable of predicting the frequencies of unstabl... |
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| Keywords: | laminar kinetic energy transition prediction quiet wind tunnel |
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