Numerical investigations on Re-independence for the turbulent flow and pollutant dispersion under the urban boundary layer with some experimental validations

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• 作者：Peng-Yi Cui^a ; Zhuo Li^a ; Wen-Quan Tao^a ; ^b ; ^{wqtao@mail.xjtu.edu.cn}
• 关键词：Numerical wind tunnel (NWT) ; Flow similarity ; Critical Reynolds number ; Reynolds number independence ; Turbulence model
• 刊名：International Journal of Heat and Mass Transfer
• 出版年：2017
• 出版时间：March 2017
• 年：2017
• 卷：106
• 期：Complete
• 页码：422-436
• 全文大小：4447 K
• 卷排序：106

文摘

Numerical simulations were applied to study Re-independence. Two flow regimes (strongly and weakly Re-dependent) were identified. ReH,crit depends on building structures and dimensions, and is case dependent. A case-independent Rer,crit (=25) in the pedestrian level plane is obtained. Re-independence of flow guarantees Re-independence of concentration profile.