EVALUATION OF WIND ENVIRONMENT AROUND THE BUILDING IN THE EARLY DESIGN STAGES USING BIM-BASED CFD SIMULATION

Abstract

Drastic urbanization and Manhattanization are causing various problems in the wind environments of urban areas. This study suggests a computational fluid dynamics (CFD) simulation method to evaluate the wind environment around urban buildings in the early design stages. The CFD simulation method suggested in this study is not a traditional in-depth simulation, but a method to immediately evaluate the wind environment for each design alternative and provide guidelines for design modification. The CFD simulation approach suggested in this study is based on the building information model. In addition, previous criteria for evaluating wind environments around buildings in urban areas are reviewed and criteria applicable to the proposed CFD simulation method are identified. Furthermore, a proper mesh generation method and appropriate CPU time were investigated to allow generation of a meaningful CFD simulation result in a limited time.