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The form of urban canyons has so many effects on climate and ventilation of urban canyons. Most of the buildings in urban area have pilotis or balcony (reentrant), and a few of them are rigid and have even surfaces. For this reason, the pilotis form, the reentrant form and the mixed form (pilotis and reentrant) have been modeled in this article with ENVI-met software. In this article, the effects of structural forms on wind velocity and kinetic energy at 1 meter above ground level (pedestrian level) has been studied using ENVI-met software. Due to the difference of these alterations in north, south and center of urban canyon, each of them has been studied separately. According to these studies, it can be observed that the pilotis form increases the kinetic energy and wind velocity. In model 1 the kinetic energy in the south of urban canyon increases up to 7.65 M/M. The reentrant form decreases the kinetic energy and wind velocity in most regions of the urban canyon. The combination of reentrant form and pilotisis creates an average mode. Considering the results of the study, it can be said that the form of urban canyons must be selected due to the climate of that region.

The Study of Pilotis and Reentrant BuildingsEffects on Kinetic Energy and Wind Velocity in Urban Canyons