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Chinese Physics, 2006, Vol. 15(1): 149-155    DOI: 10.1088/1009-1963/15/1/024
CLASSICAL AREAS OF PHENOMENOLOGY Prev   Next  

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
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
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.
Keywords:  RANS      numerical simulation      intersection      turbulenceclosure model  
Received:  20 May 2005      Revised:  29 July 2005      Accepted manuscript online: 
PACS:  47.10.ad (Navier-Stokes equations)  
  47.27.ef (Field-theoretic formulations and renormalization)  
Fund: 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.

Cite this article: 

Li Lei (李磊), Hu Fei (胡非), Cheng Xue-Ling (程雪玲), Jiang Jin-Hua (姜金华), Ma Xiao-Guang (马晓光) Numerical simulation of the flow within and over an intersection model with Reynolds-averaged Navier--Stokes method 2006 Chinese Physics 15 149

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