臺灣博碩士論文加值系統

本實驗研究使用紅外線溫度檢測系統，探討在無抽氣、正面抽氣、背面抽氣和側邊抽氣條件下，量測於相同肋面配置五組不同窄道高度，共計二十組以45度粗化之矩形抽氣通道斜肋面上的詳細熱傳係數分佈。雷諾數測試範圍為5000 - 20000，通道高度與各種抽氣條件造成的偶合效應形成多樣性的流場結構及熱傳特性。分析此組實驗參數範圍內測試之幾何條件所得的實驗數據，推導矩型渠道內設交錯45度斜肋及抽氣孔之熱傳實驗公式，提供設計燃氣渦輪定葉冷卻系統參考。

An infrared imaging system is used to measure detailed contours of local heat transfer coefficient from twenty narrow rectangular channels with two opposite walls roughened by 450 staggered ribs with and without bleeds. Nusselt number（Nu） contours over the ribbed surfaces are presented for five sets of channels with an identical rib-floor configuration but different channel heights where the complex Nu distributions without bleed and then with bleeds from the scanned rib floor or from the ribbed wall opposite to the scanned rib floor or from the smooth sidewall are analyzed to examine the synergetic effects of variable channel heights and different bleed conditions on heat transfer. Spatially averaged heat transfer results for the entire set of test channels are generated with the thermal performance factors compared to establish the heat transfer correlations with applications to the design of coolant channels in a gas turbine blade.

謝誌(Acknowledgments) Ⅰ
中文摘要(Chinese Abstract) Ⅲ
英文摘要(English Abstract) Ⅳ
表目錄(Table Captions) Ⅴ
圖目錄(Figure Captions) Ⅵ
符號說明(Nomenclature) Ⅹ

第一章 前言(Introduction) 1
1-1 燃氣渦輪機（Gas Turbine） 1
1-2 燃氣渦輪機定葉冷卻（Stator Blades Cooling） 5
1-3 研究目標（Objective） 10

第二章 文獻回顧(Literature Study) 12

第三章 實驗設備與方法(Experimental Details) 36
3-1 實驗流程圖 37
3-2 實驗設備 38
3-3 實驗步驟與規劃 44
3-4 熱損失實驗 45
3-5 實驗誤差分析 48

第四章 結果與討論(Results and Discussion) 50
4-1 流場條件 50
4-2 抽氣對管道熱傳係數分佈之影響 56
4-3 不同抽氣情況下通道高度對紐賽數分佈之影響 67
4-4 X軸熱傳係數分佈 73
4-5 Y軸熱傳係數分佈 78
4-6 熱傳經驗公式 86

第五章 結論(Conclusions) 92

參考文獻(References) 95

自述 98

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