| 四种常用湍流模型在二维后向台阶流数值模拟上的性能比较 |
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| 引用本文： | 张磊,刘滔,高文峰,林文贤.四种常用湍流模型在二维后向台阶流数值模拟上的性能比较[J].云南师范大学学报(自然科学版),2012,32(4):8-16. |
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| 作者姓名： | 张磊 刘滔 高文峰 林文贤 |
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| 作者单位： | 云南师范大学太阳能研究所,教育部可再生能源材料先进技术与制备重点实验室,云南 昆明 650092 |
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| 基金项目： | 国家自然科学基金，高等学校博士学科点专项科研基金，云南省应用基础研究计划，西部高原地区太阳能有效利用及可持续开发研究教育部创新团队发展计划 |
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| 摘 要： | 利用Fluent软件的四种常用湍流模型（k-ε湍流模型、RNGk-ε湍流模型、Realizablek-ε湍流模型、以及k-ω湍流模型）对雷诺数（Re）处于200到6500之间的二维后向台阶流的性能进行比较分析。得到了各种模型下具有不同雷诺数的瞬时平均流场和时均流场的分布特征，得到了回流区长度和涡心位置与Re的关系，并与齐鄂荣等人所作的实验结果进行了对比分析。
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| 关 键 词： | 后向台阶流 湍流模型 数值模拟 再附点 涡心 |
Comparison of Performance of Four Commonly-used Turbulence Models in Numerically Simulating Two-dimensional Backward-facing Step Turbulent Flows |
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| ZHANG Lei
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LIU Tao
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GAO Wen-feng
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LIN Wen-xian.Comparison of Performance of Four Commonly-used Turbulence Models in Numerically Simulating Two-dimensional Backward-facing Step Turbulent Flows[J].Journal of Yunnan Normal University (Natural Sciences Edition),2012,32(4):8-16. |
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| Authors: | ZHANG Lei LIU Tao GAO Wen-feng LIN Wen-xian |
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| Institution: | (Solar Energy Research Institute,Yunnan Normal University,Key Laboratory of Advanced Technique & Preparation for Renewable Energy Materials of the Ministry of Education of China,Kunming,Yunnan 650092) |
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| Abstract: | In the paper,the performances of four commonly-used turbulence models(k-εturbulence model,RNG k-εturbulence model,Realizable k-εturbulence model,and k-ωturbulence model) are compared by using Fluent to numerically simulate two-dimensional backward-facing step turbulent flows with the Reynolds number in the range of 200 to 6 500.The numerical simulations give the instantaneous mean flow fields and time-averaged flow fields predicted by each turbulence model for various Reynolds and the relation between the length of the back flow region and the Reynolds number.All numerical results are also compared to the experimental results obtained by Qi et al. |
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| Keywords: | Backward-facing step flow Turbulence model Numerical simulation Re-attachment point Vortex center |
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