| 超声速复杂流动中湍流模型的性能评估 |
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| 引用本文： | 赵瑞,阎超.超声速复杂流动中湍流模型的性能评估[J].北京航空航天大学学报,2011,37(2):202-205,215. |
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| 作者姓名： | 赵瑞 阎超 |
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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 |
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| 基金项目： | 国家973计划资助项目(2009CB724104) |
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| 摘 要： | 对8°,16°,20°,24°超声速二维压缩拐角进行了数值模拟,系统评估了SA(Spalart-Allmaras), k-ω, SST(Shear Stress Transport)3种工程常用湍流模型对激波/边界层干扰复杂流动的模拟适用能力.对于"弱"干扰、小分离,工程常用湍流模型能够较准确地预测其压力、摩擦力、热流分布,而对于"强"干扰、大分离则会造成较大的偏差.同时,随着分离区的增大,各湍流模型的适用性能差别更加明显,数值方法也有一定的影响.
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| 关 键 词： | 超声速流动 湍流模型 激波 边界层 计算流体力学 |
| 收稿时间： | 2009-12-23 |
Evaluation of engineering turbulence models for complex supersonic flows |
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| Zhao Rui,Yan Chao.Evaluation of engineering turbulence models for complex supersonic flows[J].Journal of Beijing University of Aeronautics and Astronautics,2011,37(2):202-205,215. |
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| Authors: | Zhao Rui Yan Chao |
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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: | Supersonic flows past a series of two-dimensional compression ramps were simulated by employing three popular engineering turbulence models, namely Spalart-Allmaras(SA), k-ω, shear stress transport(SST). The performance of the three engineering turbulence models was evaluated and summarized. All three turbulence models are reasonably accurate to predict the surface pressure, skin friction and heat transfer distribution for "weak" shock/boundary-layer interactions, but show significant discrepancies with experimental data for "strong" interactions. Each turbulence model shows much different simulation capability with the separation lengths increased, and the numerical method has much effect too. |
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| Keywords: | supersonic flow turbulence models shock boundary layers computational fluid dynamics |
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