OPTIMIZATION OF TREE CANOPY MODEL FOR CFD PREDICTION OF WIND ENVIRONMENT AT PEDESTRIAN LEVEL

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  • 歩行者レベルの風環境予測のための植生キャノピーモデルの最適化

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The canopy model for reproducing the aerodynamic effects of trees was optimized for the CFD prediction of wind environment at pedestrian level. The canopy model adopted in this research uses the revised k-ε model using a “mixed ” time scale concept as a base with extra terms added into the transport equations. After reviewing the previous researches on modelling of these terms, two types of canopy models were selected. Then, the model coefficients included in the extra term added to the transport equation of ε were optimized by comparing numerical results with field measurements of wind velocity and turbulent energy k behind pine trees.

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