STUDY ON FLOW RATE ESTIMATION CONSIDERING EFFECT OF FLUCTUATING WIND (PART 1): EFFECT ON LARGE SPACE WITH CROSS-VENTILATION

Natural ventilation has been actively introduced in office building, and much research on the prediction of airflow rate using LES simulation and effect of fluctuating wind and turbulence are studied in recent years. However, there are few studies that performed simultaneous indoor and outdoor numerical analysis on timeline. In this paper, the airflow rate calculated by LES simulation and flow network model based on time average wind pressure and instant wind pressure are compared, and it was made clear that the unsteady phenomena are essential to predict the airflow rate by wind turbulence in the case of natural ventilation design.