Evaluation of the Wind Environment around Multiple Urban Canyons Using Numerical Modeling

This study aimed to evaluate the wind environment in step-up and step-down urban canyons through a computational numerical experiment using fluid dynamics (CFD) model. Spatial structural conditions were considered according location of high-rise buildings, changing patterns inside compared analyzed by varying building heights. Under condition, velocity canyon weakened, vertical vortex formed, air flow separated; additionally, shallow deep canyons, detailed differed slightly each additional condition. For located center appeared be isolated, general phenomenon consistent with structures was observed. However, depending on isolated area, an roof-top field found affect other canyons. The components inflow outflow winds into based or conditions, first second Furthermore, greatly affected structures. Accordingly, height could various phenomena, such as separation vortices currents canyon, variable formed series for building.