풍환경 평가를 위한 CFD 시뮬레이션에서 풍속프로파일과 Z축 방향 격자크기에 대한 연구

Recently, drastic urbanization is making building forest in urban area. This phenomenon is causing various problems such as Heat Island, pollutant stagnation, and gust. Especially, deformed wind by buildings makes severe problems in wind environment. To solve this problem, wind tunnel test and CFD(Computational Fluid Dynamics) simulation are used. CFD simulation methods are widely used because of its convenience for time and cost. To properly predict the wind environment in urban area with CFD, the boundary condition for simulation should be set in correct. Especially, the inlet wind profile has a great influence on the results. This paper will be discussed the influence of the wind profile with Z direction grid size. The case study will be done to figure out the relation wind profile with Z direction grid size.