Numerical Investigation of Flow Structures for Four Buildings at Different Distances

In the present study, it was aimed to compare the effects of the different distances between four buildingsplaced in a wind area on the surface pressure distributions and flow structures around the building. For thispurpose, ANSYS-FLUENT 14.0 package program was used and analyses were performed with the RNG k-?turbulence model by 3D-modelling the buildings. The distances between the buildings were initially chosen ashalf of the building height and then the same as the building height. The average wind velocity was determinedby taking the meteorological data for Sivas into consideration and the distributions of the flow line, velocityvector, turbulence kinetic energy and surface pressure coefficients were calculated for the medium height androof level of the buildings. It is observed from the results that the distances between the buildings significantlyaffected the flow structures and velocity distributions, positive pressures were effective for front surfaces in thefirst buildings and negative pressure areas were formed in the rear surfaces and roofs.