| 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 | en_US |
| 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 | DEU |
| 公開徵稿 | Y |
| 出版型式 | 電子版 |
| 出處 | Proceedings of 6th International Symposium on Computational Wind Engineering |
| 相關連結 |
機構典藏連結 ( http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/98736 ) |
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