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題名 | Transient Analysis of 2-D Rectangular Fin with Constant Base Heat Flux and Tip Convective Effects=二維矩形散熱片根部具等熱通量且端部具對流效應之暫態分析 |
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作者 | 蘇榮家; 熊文震; | 書刊名 | 筧橋學報 |
卷期 | 6 1999.09[民88.09] |
頁次 | 頁377-394 |
分類號 | 440.137 |
關鍵詞 | 熱通量; 暫態熱傳; 端部對流效應; Heat flux; Transient heat transfer; Tip convective effects; |
語文 | 英文(English) |
中文摘要 | 本文利用拉普拉斯轉換與分離變數法探討二維矩形散熱片,其根部突受等熱通量 變化且端部具有對流熱傳時之暫態熱傳問題。散熱片端部熱對流對溫度分佈與根部暫態熱傳 率之效應被分析。同時亦探討,當銷狀散熱片端部被假設為絕熱或為外圍環境溫度時之暫態 熱傳問題。討論由散熱片端部表面上所傳出熱量佔散熱片整體表面所傳出總熱量之比值亦是 本文重點之一。 |
英文摘要 | Analytical transient solutions are developed for a two-dimensional rectangular plate fin with tip convective conditions when the fin base is subjected to constant heat flux. By using methods of the Laplace transformation and separation of variables, the effects of tip convections on the temperature distributions along the fin and the transient total heat flow at the fin lateral and tip surfaces are examined. Solutions are also obtained for two other tip boundary conditions (i.e., the tip is insulated and the tip temperature is equal to that of the surroundings). To assess the tip convective effects, the ratios of the transient heat flow rate on the tip surface to the transient total heat flow rate on the fin surfaces are discussed. |
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