Simulation of wind-induced internal pressures in low-rise buildings using the poiseuille's law for leak-flows

This paper describes a method of numerically simulating the internal pressures of low-rise buildings with multiple rooms that are caused by the wind. The coefficient of discharge for leak flows through external and partition walls in this study is determined by using the Poiseuille's law. This study shows that the internal pressure properties obtained using the proposed simulation method correspond well to measurements taken in a wind tunnel experiment conducted using internal pressure models. The Reynolds number and discharge coefficient characteristics of leak flows through external and partition walls are analyzed based on the validity of the simulations. The mean Reynolds number value of the leak flows through external and partition walls was smaller than the transition Reynolds number for the transition from laminar to turbulent flow.