The effect of topography on building structures in urban subdivision utilizing computational fluid dynamics for critical wind pressure determination

The topography was established using Autodesk Revit with reference to Google Earth. The mathematical model was formulated with the discretization of the Navier-Stokes equation in three dimensional form into a simplified and corrected momentum and pressure equations. The maximum positive and negative wind pressures were obtained from 180° south wind attack angle and critical wind pressures were obtained from the maximum negative wind pressures. Topography in terms of elevation showed that the recorded wind pressure of elevated houses are higher than those situated on the non-elevated areas. As the velocity profile and elevation of the topography increases, the simulated pressure also increases. The higher the simulation resolution, the more detailed and accurate are the results.