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Wind and Structures
  Volume 7, Number 1, January 2004 , pages 1-12

Numerical simulation of flow past 2D hill and valley
Jaeyong Chung and Bogusz Bienkiewicz

     Numerical simulation of flow past two-dimensional hill and valley is presented. Application of three turbulence models - the standard and modified (Kato-Launder) k- e models and standard k- w model - is discussed. The computational methodology is briefly described. The mean velocity and turbulence intensity profiles, obtained from numerical simulations of flow past the hill, are compared with the experimental data acquired in a boundary-layer wind tunnel at Colorado State University. The mean velocity, turbulence kinetic energy and Reynolds shear stress profiles from numerical simulations of flow past the valley are compared with published experimental data. Overall, the results of simulations employing the standard k- e model were found to be in a better agreement with the experimental data than those obtained using the modified k- e model and the k- w model.
Key Words
    numerical simulation; k- e model; k- w model; ASCE 7-98; wind speed-up ratio.
Wind Engineering and Fluids Laboratory, Engineering Research Center, Colorado State University, Fort Collins, Co 80523, U.S.A.

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