作　　者： ;

机构地区： 广东工业大学建设学院

出　　处： 《广东工业大学学报》 2007年第2期51-55,共5页

摘　　要： 采用3个湍流模型(标准k-ε湍流模型、剪应力输运模型(SST)和SSG雷诺应力模型)和污染物输运方程对孤立建筑物周围的烟流扩散现象进行了数值模拟,并通过风洞试验数据对模拟结果进行了评估.结果显示:3个湍流模拟均能较好地再现孤立建筑物尾流区的浓度分布,但在数量上趋向于低估污染物浓度值和烟流的散开程度. Using three turbulence models, i.e. the standard κ-ε model, Shear stress transport model （SST） and SSG Reynolds-stress model, and pollutant transport equation, a numerical simulation for the dispersion of a plume around an isolated building is conducted. In comparison with results from wind-tunnel experiments, the computational results are analyzed and evaluated. The results demonstrate that all the three turbulence models can reasonably reproduce the concentration distribution in the near wake. Quantitatively, they tend to under-estimate the magnitude of concentrations and also under-predict the spread of the plume in the wake region.

关 键 词： 计算流体力学 大气污染物 烟流扩散 建筑物影响

领　　域： [理学] [理学] [环境科学与工程]