本論文以空氣噴流衝擊至長方形基板進行實驗，以分析其衝擊面之熱傳性能。實驗的方法是利用暫態液晶測溫技術來量測衝擊面的局部熱傳係數。
實驗參數包含雷諾數（Re=108、142、170），衝擊高度�基板寬度（H/D=0.086、0.172、0.259、0.345、0.431、0.52）以及腔體寬度�基板寬度（B/D=1.45、1.86、2.41）。此實驗量測所得之平均Nusselt number，並以迴歸分析法表示為Re、H/D與B/D之函數。
本文實驗結果顯示，得出在三種環境條件下有最好的熱傳效果：（1）當雷諾數為170時。（2）在低分離距時。（3）腔體出口大小較大時。

This thesis presents the experiment study results on the local heat transfer coefficients for air jet impinging on a flat rectangle board. A transient thermochromatic liquid crystal technique is used to visualize and record isotherms on an impingement surface.
The parameter studied include Reynolds number（Re=108,142,170）,jet height from the rectangular board（H/D=0.086,0.172,0.259,0.345,0.431,0.52）, and size of outlet（B/D=1.45,1.86,2.41）. The correlation of average Nusselt number is curve-fitted with Re,H/D and B/D .
According to the present study,heat transfer is best when the Reynolds number is large,the jet height is small,and the outlet area is large .

表目錄 .....................................................................................................................................ii
圖目錄 ....................................................................................................................................iii
符號說明 .................................................................................................................................v
摘要(中文) .............................................................................................................................vii
摘要(英文) ............................................................................................................................viii

章節
第一章 緒論 ............................................................................................................................1

1-1 研究動機和背景 ..............................................................................................1

1-2 文獻回顧 ..........................................................................................................4

1-3 研究重點 ..........................................................................................................8

第二章 理論基礎 ..................................................................................................................10

第三章 實驗設備和方法 ......................................................................................................17

3-1實驗規劃 ............................................................................................................17

3-2實驗設備 ............................................................................................................17

3-3應用LCIA之強度值校正步驟 .........................................................................21

3-4實驗步驟 ….......................................................................................................22

第四章 實驗結果和討論 ......................................................................................................25

4-1分離距 （ ）對熱流場的影響 ....................................................................25
4-2腔體出口區域大小( )對熱流場的影響 ........................................................26
4-3雷諾數(Re)對熱流場的影響 .............................................................................28

4-4 熱傳實驗公式 ...................................................................................................29

4-5不準度分析.........................................................................................................30
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第五章 結論 ..........................................................................................................................32

參考文獻 ................................................................................................................................61

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