ABSTRACT
The albedo of pavement is one of the main factors that can distinctly influence the urban heat island (UHI). This paper investigates the influence of pavement albedo and area, wind velocity, building albedo on UHI using Computational Fluid Dynamics (CFD) simulation. The urban microclimate model including buildings, pavement, and grassland was established in ANSYS ICEM. The radiation of the sun on the microclimate model from morning to night was simulated. The effect of pavement area and albedo (colored pavement), building albedo, wind velocity on the urban wind-heat environment are analyzed. The results showed the colored pavement has an excellent ability to reduce the temperature of the pavement surface. With the increase of pavement surface area, the air heating area and local UHI intensity increase. The building shadow and wind speed have a great influence on the urban temperature distribution. The highest temperature of buildings occurs on the roof and the temperature difference between the walls is not obvious.
