Comparison of various k-e models and DSM applied to flow around a high-rise building -report on AIJ cooperative project for CFD prediction of wind environment-

Recently, the prediction of wind environment around a building using Computational FluidrnDynamics (CFD) technique comes to be carried out at the practical design stage. However, there havernbeen very few studies which examined the accuracy of CFD prediction of flow around a high-risernbuilding including the velocity distribution at pedestrian level. The working group for CFD prediction ofrnwind environment around building, which consists of researchers from several universities and privaterncompanies, was organized in the Architectural Institute of Japan (AIJ) considering such a background. Atrnthe first stage of the project, the working group planned to carry out the cross comparison of CFD resultsrnof flow around a high rise building by various numerical methods, in order to clarify the major factorsrnwhich affect prediction accuracy. This paper presents the results of this comparison.