Microclimate Effect Of The Water Layout In Urban Square

With the development of modern meteorology,the research on urban microclimate is getting more and more attention.Nowadays,the main emphasis of microclimate research is focus on the types of city underlying surface,in the research of which the research on water is relatively less.So this thsis is focused on the microclimate of water layout,which provides foundation or basis for the designer or researcher.Firstly,the model of urban leisure square is obtained through investigation and statistical analysis.Secondly,this thsis summarizes the water layout elements which include water scale,dispersing degree,water form and water position,and quantifies these water layout elements.Then this thsis establishs the final models through combines different water latout models of scale,dispersion model,form,location,with urban leisure square model.Thirdly,this thsis simulates the different layout model of water in square using the software of ENVI-met and gets the result of temperature,relative humidity,wind speed and thermal comfort.Then obtain the changes result from the water layout through statistical analysis.The results show thatThe effects of different water layout factors on microclimate are mainly in the daytime.The change of microclimate effect in water is greater than that in the accessible region.If the water scale become greater,the effect change of microclimate is larger(temperature decreasing,humidity increasing,thermal comfort good in summer,winter in poor),but if the water become bigger,the accessible region will become smaller,so water scale ratio of 30%could guarantee enough accessible region which the temperature and human comfort is better.And if the water is more closer,the microclimate effect change is bigger(decreasing temperature,increasing humidity,thermal comfort good in summer,poor in winter),but the microclimate becomes more different.And the more compact the water shape is,the greater the variation of the microclimate effect is.It is better for the microclimate in summer if the water is in the wind,while it is better for the winter microclimate if the water is in the absence of the wind Accoding to compare the influence of different water layout factors on microclimate effect,the result shows the influence of the scale of water on microclimate effect is better than the dispersion degree and position of water body,which are better than water shape.