| Numerical simulation of the flow within and over an intersection model with Reynolds-averaged Navier-Stokes method |
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| 作者姓名： | 李磊 胡非 程雪玲 姜金华 马晓光 |
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| 作者单位： | State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry,Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China;Beijing Meteorological Bureau, Beijing 100089,China;State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry,Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China;State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry,Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China;State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry,Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China;State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry,Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China |
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| 基金项目： | Project supported by the National Natural Science Foundation of China (Grant Nos 40233030, 40405004 and 40405014) and the Special Program of the Scientific and Social Practices for Graduate Students in Chinese Academy of Sciences, China. |
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| 摘 要： | In this study, the Reynolds-averaged Navier-Stokes （RANS） method is employed to simulate the flow within and over an intersection model with three kinds of k-ε turbulence closure schemes, namely, standard model, renormalization group （RNG） model and realizable k-ε model. The comparison between the simulated and observed flow fields shows that the RANS simulation with all the three turbulence models cannot completely and accurately reproduce the observed flow field in all details. A detailed comparison between the predicted profiles of wind velocities and the measured data shows that the realizble k-ε model is the best one among the three turbulence closure models in general. However, the extent to which the improvement is achieved by the realizable k-ε model is still not enough to completely and accurately describe the turbulent flow in a relatively complex environment.
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| 关 键 词： | 数字模拟 相交模型 湍流 RANS 流体力学 |
| 收稿时间： | 2005-05-20 |
| 修稿时间： | 2005-05-202005-07-29 |
Numerical simulation of the flow within and over an intersection model with Reynolds-averaged Navier--Stokes method |
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| Li Lei,Hu Fei,Cheng Xue-Ling,Jiang Jin-Hua and Ma Xiao-Guang.Numerical simulation of the flow within and over an intersection model with Reynolds-averaged Navier-Stokes method[J].Chinese Physics B,2006,15(1):149-155. |
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| Authors: | Li Lei Hu Fei Cheng Xue-Ling Jiang Jin-Hua and Ma Xiao-Guang |
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| Institution: | State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry,Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China; State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry,Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China;Beijing Meteorological Bureau, Beijing 100089,China |
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| Abstract: | In this study, the Reynolds-averaged Navier--Stokes (RANS) method is
employed to simulate the flow within and
over an intersection model with three kinds of \textit{k--$\varepsilon $}
turbulence closure schemes,
namely, standard model, renormalization group (RNG) model and realizable
\textit{k--$\varepsilon $} model. The comparison
between the simulated and observed flow fields shows that the RANS simulation
with all the three turbulence models cannot completely and accurately reproduce
the observed flow field in all details. A detailed comparison between the
predicted profiles of wind velocities and the measured data shows that the
realizable \textit{k--$\varepsilon $} model is the best one among the three turbulence closure models
in general. However, the extent to which the improvement is achieved by
the realizable
\textit{k--$\varepsilon $} model is still not enough to completely and
accurately describe the turbulent flow in a relatively complex
environment. |
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| Keywords: | RANS numerical simulation intersection turbulence
closure model |
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