期刊論文
| 學年 | 92 |
|---|---|
| 學期 | 1 |
| 出版（發表）日期 | 2003-09-01 |
| 作品名稱 | Separated Shear Layers of Rectangular Prisms in Turbulent Flows |
| 作品名稱（其他語言） | |
| 著者 | Lu, Po-chien; Cheng, Chii-ming; Lai, Chien‐wan; Chang, Chang‐wei |
| 單位 | 淡江大學水資源及環境工程學系; 淡江大學土木工程學系 |
| 出版者 | Taipei : Chinese Institute of Chemical Engineers |
| 著錄名稱、卷期、頁數 | Journal of the Chinese Institute of Engineers=中國工程學刊 26(5), pp.721-727 |
| 摘要 | Rectangular prisms with different depth-to-width ratios (B/D) were placed in flow fields with various turbulence intensities (T.I.) and length scales to study the unsteady structures of separated shear layers. Velocity profiles, turbulence intensity profiles, velocity gradient profiles, and wake spectra of the prisms were measured. When B/D=.4 to 1., differences between the acceleration and deceleration phases of these profiles were prominent, indicating strong vorticities especially when B/D= .6. These differences, also supported by the spectra peaks, became less obvious when B/D=2. and 3.. The approaching field T.I. had a larger effect than the length scale. Higher T.I. led to increased intensity, flow mixing, and thickness of the boundary layer, but weaker wake vorticity. |
| 關鍵字 | separated shear layer;turbulence intensity;turbulence length scale;phase average |
| 語言 | en |
| ISSN | 0253-3839 |
| 期刊性質 | 國內 |
| 收錄於 | SCI EI |
| 產學合作 | |
| 通訊作者 | |
| 審稿制度 | |
| 國別 | TWN |
| 公開徵稿 | |
| 出版型式 | 紙本 |
| 相關連結 |
機構典藏連結 ( http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/44682 ) |