The existence of air-cooling island will affect the surrounding flow field and influence parameters of the boundary layer.The Gambit software was employed to build the air-cooling island model.To make the simulation results be closer to the actual situation

the velocity and temperature distribution function of the boundary layer was loaded by the UDF as the inlet boundary condition.The Fluent software was used to simulate the influence of air-cooling island on the environment air.The results indicate that

the effects of blocking of the air-cooling island and building make the air velocity reduce obviously.Hot air from the air-cooling island make the surrounding air mixture becomes more intense.The turbulent kinetic energy also changes in the vertical direction.The effect of air-cooling island on the air temperature is mainly under100 mheight

and this effect gets weaker with the increasing height.