A computational anaysis of heat enviroment around unban pavement

Due to climate change and urbanization, occurrences of heat island and tropical night are increasing as concrete structures and manmade roads have been extended and green land has decreased, resulting in loss of even human lives and damages on facilities. Application of special material to pavement has been researched to utilize its effects of lowering temperature and high capacity of water retention. In this study, computational study were undertaken to analyze the heat balance on and in the pavement of materials water retention property. The computations were based on computational fluid dynamics with different values of the water content percentage and physical properties. The result shows that the physical properties of pavement doesn't affect the surface temperature of the pavement, while increasing water content percentage in the material upto 50% has lowered the surface temperature by 3? and spraying water on the pavement has lowered the temperature by 11?. However, in spite of spraying water, the air temperature near the pavement remained higher than 25?.