中国物理B ›› 2006, Vol. 15 ›› Issue (1): 149-155.doi: 10.1088/1009-1963/15/1/024

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Numerical simulation of the flow within and over an intersection model with Reynolds-averaged Navier--Stokes method

胡非1, 程雪玲1, 姜金华1, 马晓光1, 李磊2   

  1. (1)State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry,Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China; (2)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
  • 收稿日期:2005-05-20 修回日期:2005-07-29 出版日期:2006-01-20 发布日期:2006-01-20
  • 基金资助:
    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.

Numerical simulation of the flow within and over an intersection model with Reynolds-averaged Navier--Stokes method

Li Lei (李磊)ab, Hu Fei (胡非)a, Cheng Xue-Ling (程雪玲)a, Jiang Jin-Hua (姜金华)a, Ma Xiao-Guang (马晓光)a   

  1. a State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China; b Beijing Meteorological Bureau, Beijing 100089, China
  • Received:2005-05-20 Revised:2005-07-29 Online:2006-01-20 Published:2006-01-20
  • Supported by:
    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 $k$--$\varepsilon$ turbulence closure schemes, namely, standard model, renormalization group (RNG) model and realizable $k$--$\varepsilon$ 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 $k$--$\varepsilon$ 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 $k$--$\varepsilon$ model is still not enough to completely and accurately describe the turbulent flow in a relatively complex environment.

关键词: RANS, numerical simulation, intersection, turbulenceclosure model

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 $k$--$\varepsilon$ turbulence closure schemes, namely, standard model, renormalization group (RNG) model and realizable $k$--$\varepsilon$ 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 $k$--$\varepsilon$ 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 $k$--$\varepsilon$ model is still not enough to completely and accurately describe the turbulent flow in a relatively complex environment.

Key words: RANS, numerical simulation, intersection, turbulenceclosure model

中图分类号:  (Navier-Stokes equations)

  • 47.10.ad
47.27.ef (Field-theoretic formulations and renormalization)