Study on the impact of multi-mode combined residential green space on thermal environment
As the most important spatial unit of urban resident activities,the thermal environment quality of residential area determines the thermal comfort and happiness of residents.On the basis of summarizing the green space combination models in urban residential areas,this paper adopts non static fluid dynamics technology and thermodynamic principles,coupled with finite difference and alternating direction implicit algorithms,to conduct thermal effect simulation research on green space ecosystems with different pattern structure combinations within the community scope.By comparing and analyzing the thermal environment effect characteristics of green space system with different combination modes,the interaction between green space and local thermal environment in residential areas under multi-mode combination is explored.The results show that under the same simulation conditions,the"center+residence"green space mode has the best thermal environment effect,the"cluster+residence"mode takes the second place,and the"residence"mode has the worst thermal environment effect.The maximum and minimum temperature differences of three green space combination modes in the simulation area are 2.36,2.31 and 2.34℃,respectively,and the temperature presents a circular distribution from southwest to northeast.The improvement effect of the combination mode of different green plant types on the local geothermal environment is as follow,grass+shrub+tree＞grass+tree＞grass+shrub＞grass.This improvement effect of shrubs on the thermal environment comfort of green space is not significant.The study can provide scientific reference for the planning,design and practice of green space in residential areas.
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