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題名 | 正圓柱形銷狀散熱片具非對稱熱邊界條件之熱傳分析=Study on Heat Transfer of a Cylindrical Pin Fin with Asymmetrical Thermal Boundary Conditions |
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作者 | 蘇榮家; | 書刊名 | 筧橋學報 |
卷期 | 5 1998.09[民87.09] |
頁次 | 頁251-274 |
分類號 | 446 |
關鍵詞 | 正圓柱形銷狀散熱片; 非對稱溫度效應; 移轉數; 散熱片幾何參數; Cylindrical pin fin; Effect of asymmetrical tmperature; Removal number; Geometry parameter for pin fin; |
語文 | 中文(Chinese) |
中文摘要 | 本文主要探討二維正圓柱形銷狀散熱片,其兩端根部受非對稱溫度效應之穩態熱 傳問題。本題含兩個非齊次邊界條件,所先將它分成兩個次問題,僅含一個非齊次邊界條件 ,再應用重疊方法求解;同時亦比較一維與二維理論分析上之誤差。結果顯示:當散熱片幾 何參數 G 等於 G �諿氶A 即右端熱傳率 Q �荃澡� D 正好為零,其 G �蹀H著非對稱溫度 T �k減小而增加。 總熱傳率 Q �� D 與移轉數 Nr 均隨著 G 增加而增加,然後趨近於某一固 定值。相對誤差 ERR 不受 T �k變化的影響。 |
英文摘要 | The purpose of this paper is to investigate the steady-state heat transfer problem with the effect of asymmetrical temperature conditions in two-dimensional cylindrical pin fin. Since the problem involves two nonhomogeneous boundary conditions, it is split into two subproblems each containing one nonhomogeneous boundary condition, the solution is obtained by using the method of superposition. Results of 2-D analytic solutions are also compaed with those of 1-D problems by using the relative error of the total heat transfer rate at the fin base. Results show:There is a value of G=G �� for which Q �荃澡� is zero and that G �� increases as T �k decreases. Total heat transfer rate Q �� and removal number Nr increase with G approaching an asymptotic value. The relative error is unaffected by the various values of T �k. |
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