摘要
文章采用CFD(计算流体力学)数值模拟的研究方法,探究了孤立街道峡谷内不同屋顶形状和污染源位置的数值仿真模型。针对平顶-三角形屋顶和三角形-平顶屋顶,以及3种污染源,共6种工况进行研究。结果表明相同屋顶形状的污染源位置变化对于气流运动无改变,对于污染物浓度相对低的壁面浓度值改变很小,但对污染物浓度相对高的壁面浓度有较大影响,街谷上部靠近屋顶位置受污染源位置的影响逐步减小。
The article adopts of CFD numerical simulation method, to explore the influence of the verious roof shapes and pollutant source location on wind flow in street cayon. 6 conditions are considered in total which related flat-triangle and triangle-flat roof as well as three different roof type. The results show that the pollutant source locations have no effect on the air flow in street cayon. And t has less influence on the low concentration values on the wall, where more remarkable influence on the high concentration values on the wall.
出处
《广东化工》
CAS
2017年第15期73-75,67,共4页
Guangdong Chemical Industry
关键词
街道峡谷
污染源位置
数值模拟
Street canyon
Pollutant source location
Numerical simulation
