On the accuracy of CFD simulations of cross-ventilation flows for a generic isolated building: Comparison of RANS, LES and experiments

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• 作者：T. van Hooff^a ; ^b ; ^{twan.vanhooff@kuleuven.be} ; B. Blocken^a ; ^b ; Y. Tominaga^c
• 关键词：Natural cross-ventilation flow ; Numerical simulation ; Atmospheric boundary layer (ABL) flow ; Building aerodynamics ; Turbulence model validation ; Transient flow features
• 刊名：Building and Environment
• 出版年：2017
• 出版时间：March 2017
• 年：2017
• 卷：114
• 期：Complete
• 页码：148-165
• 全文大小：5394 K
• 卷排序：114

文摘

Assessment of five steady RANS turbulence models and LES for cross-ventilation flow. SST/RNG/RSM reproduce the experimentally observed direction of the incoming jet. All RANS models underpredict turbulent kinetic energy inside the enclosure. LES reproduces the mean velocity and turbulent kinetic energy with higher accuracy. Better performance of LES due to the reproduction of transient flow features.