Numerical Simulation of the Effects of Water Surface in Building Environment

3rd International Conference on Energy Equipment Science and Engineering

Li, Guangyao^1 ; Pan, Yuqing^1 ; Yang, Li^2,3

College of Electronic and Information Engineering, Tongji University, Shanghai

201804, China^1

Architecture Department, College of Architecture and Urban Planning, Tongji University, China^2

Key Laboratory of Ecology and Energy Saving Study of Dense Habitat, Tongji University, Ministry of Education, Shanghai, China^3

关键词: Building arrangements;    Computational fluid dynamics simulations;    Evaporation model;    Evaporative cooling;    Temperature decrease;    Thermal characteristics;    Thermal environment;    Water evaporation;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/128/1/012072/pdf
DOI  :  10.1088/1755-1315/128/1/012072

来源: IOP

【 摘 要 】

Water body could affect the thermal environment and airflow field in the building districts, because of its special thermal characteristics, evaporation and flat surface. The thermal influence of water body in Tongji University Jiading Campus front area was evaluated. First, a suitable evaporation model was selected and then was applied to calculate the boundary conditions of the water surface in the Fluent software. Next, the computational fluid dynamics (CFD) simulations were conducted on the models both with and without water, following the CFD practices guidelines. Finally, the outputs of the two simulations were compared with each other. Results showed that the effect of evaporative cooling from water surface strongly depends on the wind direction and temperature decrease was about 2∼5°C. The relative humidity within the enclosing area was affected by both the building arrangement and surrounding water. An increase of about 0.1∼0.2m/s of wind speed induced by the water evaporation was observed in the open space.