ABSTRACT
ABSTRACT: Thermal environment analysis plays an important role in urban planning. For complex heat exchange between airflow and urban underlying, simplified evaporation model combined with CFD simulation was proposed to describe surface evaporation cooling effect in hot-humid regions. Based on improved CFD simulation, three approaches of outdoor natural ventilation promotion, improvement of thermo-physical characteristics of underlying surface and outdoor ecological compensation were analyzed, and designing factors involved in the approaches were elucidated in detail. Finally, based on the analysis of urban thermal environment of a hot-humid county in South China, the conclusion was arrived that approaches were effective in the improvement of outdoor thermal environment in hot and humid regions.
