Wind field analysis for a high-rise residential building layout in Danhai, Taiwan

The present study shows the ground work results from the computational fluid dynamics (CFD) analysis for the residential new town Danhai in the northern Taiwan. As a new approach in urban and community planning and design subjects, we performed the simulations to obtain numerical predictions of flow characteristics around the buildings for exploring the wind field of the Danhai new town. In the analysis, the dimensions of calculation domain were 3 km long, 2 km wide and 0.6 km high. We considered the incompressible isothermal turbulent flow over the high-rise residential buildings to probe the interaction of airflow with buildings as well as to better understand the effect of the contiguous design on the urban ventilation outcome. A modified model was also proposed through removal of a single building in the windward of community to enlarge the wind pathway. The simulated results evidently indicated that the improved design significantly enhanced ventilation with a comfortable wind environment achieved in the central open space for residents.