前后通风的建筑内外流动湍流模型比较  

Comparison of turbulence models for flow around a building with cross ventilation

作　　者：谢海英[1] 张道方[1] 

机构地区：[1]上海理工大学城市建设与环境工程学院,上海200093

出　　处：《上海理工大学学报》2007年第5期449-452,共4页Journal of University of Shanghai For Science and Technology

基　　金：上海市世博会科技攻关重大项目(06dz05809)

摘　　要：对前后通风的建筑内外流动采用单方程涡黏系数(Spalart-Allmaras)模型、RNGκ-ε模型、re-alizableκ-ε模型和标准κ-ε模型进行数值模拟,并与风洞试验结果进行比较.结果表明,建筑内流动的预测对模型的依赖性不强,这与本文模拟的建筑内流动较为简单有关.单方程涡黏系数模型和RNGκ-ε模型与建筑外的复杂流动特点相适应,模拟效果最好,标准κ-ε模型对室外流动不能很好地进行预测,realizableκ-ε模型的预测能力一般.Four turbulence models： Spalart-Allmaras, RNG κ-ε, realizable κ-ε and standard κ-ε were chosen to simulate the flow around a building with cross ventilation. The results were compared with those of the wind tunnel tests. The inflow can be predicted well with any of the four models for its simplicity, while the relatively complex outflow requires the use of either Spalart-Allmaras or RNG κ-ε model. The prediction ability of realizable κ-ε model is only acceptable and can be.

关 键 词：前后通风 建筑内外流动 湍流模型 

分 类 号：O357.5[理学—流体力学]