摘要
开发了CFD-数值风洞软件,用于模拟城市地区释放的污染物/化学制剂的气流和扩散,该模型基于OpenFoam开源平台,可以进行三维大规模并行化运算,在计算机集群平台上求解三维Navier-Stokes方程和相应的物理子模型,使用在俄克拉荷马州俄克拉荷马市进行的2003年城市联合实地研究的IOP3观测数据进一步评估了数值风洞,比较了数值风洞与urban2003现场实验近区和中间区的风场和浓度场,以及城市尾迹区的风速、风向、摩擦速度和湍流动能(TKE)剖面,与现场观测基本一致,本研究结果表明数值风洞可以成为模拟城区污染物扩散问题研究的一个经济有效的工具。
Developed a CFD numerical wind tunnel software to simulate the air flow and diffusion of pollutants/chemicals released in urban areas.The model is based on openFoam open source platform,which can perform 3D large-scale parallel operation,and solve 3D Navier Stokes equations and corresponding physical sub models on computer cluster platform,Based on the observation data of iop3 from the 2003 urban joint field study in Oklahoma City,Oklahoma,the numerical wind tunnel is further evaluated.The wind field and concentration field in the near and middle regions,as well as the wind speed,wind direction,friction velocity and turbulent kinetic energy(TKE)profiles in the urban wake region are compared between the numerical wind tunnel and the urban 2003 field experiment,The results show that the numerical wind tunnel can be an economic and effective tool to simulate the diffusion of pollutants in urban areas.
作者
刘武胜
张俊芳
吕明华
吕思博
姚仁太
Liu Wusheng;Zhang Junfang;Lv Minghua;Lv Sibo;Yao Rentai(China Institute for Radiation Protection,Taiyuan 030000,China)
出处
《环境科学与管理》
CAS
2022年第3期78-83,共6页
Environmental Science and Management
关键词
数值风洞
街区
CFD
大气扩散
numerical wind tunnel
street canyon
CFD
atmospheric diffusion
