Flow Field, Vortex Shedding, and Aerodynamic performance of a Swept-Back Wing
碩士 === 國立臺灣科技大學 === 機械工程系 === 93 === 本研究針對具15度後掠角之NACA 0012剖面的有限長度懸臂機翼,探討雷諾數及攻角的變化,對後掠翼表面流場、氣動力性能及尾流區之流場結構的影響。在低雷諾數區域,透過煙線流場可視化的觀察,翼表面的流場行為有五種特徵模態產生,分別為貼附表面流、不穩定波尾流、渦旋尾流、翼前緣分離及鈍體尾流模態。在高雷諾數區域,藉由表面油膜流法觀察,翼表面的流場行為有六種特徵模態發生,分別為層流分離、分離泡、翼前緣泡、分離泡延展、紊流分離及鈍體尾流模態。故在弦長雷諾數對攻角的圖面上,可劃分出十一種表面流場之特徵模態,這些表面流場的動態衍化與時...
Main Authors: | Ching-min Hsu, 許清閔 |
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Other Authors: | Rong-fung Huang |
Format: | Others |
Language: | zh-TW |
Published: |
2005
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Online Access: | http://ndltd.ncl.edu.tw/handle/72008989803397227381 |
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