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论文:2013,Vol:31,Issue(3):392-396 |
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引用本文： |
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张强, 杨永. Spalart的曲率修正方法在SST k-ω模型中的应用[J]. 西北工业大学 |
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Zhang Qiang, Yang Yong. Implementation and Verification of Spalart's Rotation/Curvature Correction Method for SST k-ωTurbulence Model[J]. Northwestern polytechnical university |
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| Spalart的曲率修正方法在SST k-ω模型中的应用 |
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| 张强, 杨永 |
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| 西北工业大学 翼型、叶栅空气动力学国防科技重点实验室, 陕西 西安 710072 |
| 摘要: |
| 基于Spalart和Shur的曲率修正方法,修改SST k-ω模型的生成源项,给出了一种考虑曲率效应的SSTRC k-ω模型,然后数值模拟了具有轻微曲率效应的弯曲壁面和具有强曲率效应的180°U形弯管流动。数值模拟结果表明:修改后的SSTRC k-ω模型能够正确反映曲率效应所带来的额外雷诺应力,可以给出比原SST k-ω模型更加准确的计算结果,更适用于处理带有流线弯曲的流动问题;并能保证和原SST k-ω模型相当的数值收敛性;SSTRC k-ω模型对计算精度的改进程度严重依赖于曲率修正常数,但对大多数流动问题,采用目前确定的常数,SSTRC k-ω模型都可以给出比较准确合理的结果。 |
| 关键词:
SST k-ω模型
曲率修正
RANS
逆压梯度
雷诺应力
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| Implementation and Verification of Spalart's Rotation/Curvature Correction Method for SST k-ωTurbulence Model |
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| Zhang Qiang, Yang Yong |
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| National Key Laboratory of Science and Techniques on Aerodynamic Design and Research, Northwestern Polytechnical University, Xi'an 710072, China |
| Abstract: |
| Applying Spalart and Shur's rotation-curvature correction method to the SST k-ωturbulence model, we establish what we call SSTRC k-ωmodel.The SSTRC model is verified through two turbulent flows: one is the flow over the mild curvature curved wall and the other is the flow in a plane channel with a U-turn.Numerical Predic-tions of the SSTRC model are compared with available experimental data, on the one hand, and with the corre-sponding results of the original standard SST model, on the other hand.It is found that in terms of accuracy the SSTRC model is significantly better than the original SST model.The improvements in accuracy of SSTRC might be highly dependent on the rotation-curvature model constants, but, for most cases, setting cr1=1,cr2=1 and cr3=0.6, can give fairly good numerical results for SSTRC model. |
| Key words:
computational fluid dynamics
Navier Stokes equations
numerical methods
tensors
turbulence models
correction
curvature
improvement
Lagrangian derivatives
strain tensor
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| 收稿日期: 2012-09-11
修回日期:
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| DOI: |
| 基金项目: 国家自然科学基金(11002117);西北工业大学基础研究基金(JCY2013001)资助 |
| 通讯作者:
Email： |
| 作者简介: 张强(1977-),西北工业大学讲师、博士,主要从事计算流体力学研究。
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| 作者相关文章 |
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| 张强 在本刊中的所有文章 |
| 杨永 在本刊中的所有文章 |
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参考文献: |
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[1] Spalart P R, Shur M.On the Sensitization of Turbulence Models to Rotation and Curvature.Aerospace Science and Technology 1997, 1 (5): 297-302
[2] Shur M, Strelets M, Travin A, Spalart P R.Turbulence Modeling in Rotating and Curved Channels: Assessing the Spalart-Shur Correction.AIAA Journal 2000, 38(5): 784-792
[3] Menter F R, Kuntz M, Langtry R.Ten Years of Industrial Experience with the SST Turbulence Model.Turbulence, Heat and Mass Transfer 4, ed: K.Hanjalic, Y.Nagano, and M.Tummers, Begell House, Inc.2003, 625-632
[4] Pavel E S, Menter F R.Sensitization of the SST Turbulence Model to Rotation and Curvature by Applying the Spalart—Shur Correction Term.Journal of Turbomachinery 2009; 131 (4): 1-8
[5] 杨 永, 张 强.基于 SA 模型的两种曲率修正方法比较分析研究.西北工业大学学报, 2012, 30(6): 820-824 Yang Yong, Zhang Qiang, Implementing and Verifying Two Rotation/Curvature Correction Methods for Spalart-Allmaras Turbulence Model.Journal of Northwestern Polytechnical University, 2012, 30(6): 820-824 (in Chinese)
[6] So R, Mellor G L.Experiment on Convex Curvature Effects in Turbulent Boundary Layers.Journal of Fluid Mechanics 1973; 60 (1): 43-62
[7] Monson D J, Seegmiller H L.An Experimental Investigation of Subsonic Flow in a Two-Dimensional U-Duct.NASA TM103931, 1992 |
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相关文献: |
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1．杨永, 张强.基于SA模型的两种曲率修正方法的应用及验证[J]. 西北工业大学, 2012,30(6): 820-824 |
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