教師資料查詢 | 類別: 會議論文 | 教師: 鄭啟明 CHENG CHII-MING (瀏覽個人網頁)

標題:Simulation of turbulent flows around a prism in suburban terrain inflow based on random flow generation method
學年102
學期2
發表日期2014/06/08
作品名稱Simulation of turbulent flows around a prism in suburban terrain inflow based on random flow generation method
作品名稱(其他語言)
著者Li, Yi-Chao; Cheng, Chii-Ming; Zheng, De-qian; Lo, Yuan-Lung; Fang, Fuh-Min; Wang, Chia-Kuo
作品所屬單位淡江大學土木工程學系
出版者
會議名稱The 6th International Symposium on Computational Wind Engineering - CWE2014
會議地點Hamburg, Germany
摘要In this study, the modified discretizing and synthesizing random flow generation (MDSRFG) was adopted to generate an anisotropic boundary layer inlet for Large-eddy simulation. The statistical quantities including mean velocity, turbulence intensity, and turbulence length scale of inlet were defined by the measurements of suburban terrain at TKU BL-1 wind tunnel. The target spectra were also defined by von Kármán models. Results showed that the turbulence energy can be maintained from the inlet to the downstream position. Comparison of aerodynamic coefficient between simulation and experiments yielded consistent results. A square pressure model with aspect ratio h/D=3 was established for validation. The mean and fluctuating pressure distributions of simulation also showed good agreements with experiments. The result indicated that adopting a reasonable process in the MDSRFG method can be an effective numerical tool for generating a spatially correlated atmospheric boundary layer flow field.
關鍵字random flow generation; LES
語言英文(美國)
收錄於
會議性質國際
校內研討會地點
研討會時間20140608~20140612
通訊作者Li, Yi-Chao
國別德國
公開徵稿Y
出版型式電子版
出處Proceedings of 6th International Symposium on Computational Wind Engineering
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