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題 名 | An Approximate Solution for Heat Transfer of Power Law Fluid Flowing in a Thick-Wall Tube=冪次流體在厚壁圓管內熱傳之近似解 |
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作 者 | 曾雪蓮; 李文乾; 朱義旭; | 書刊名 | Journal of the Chinese Institute of Chemical Engineers |
卷 期 | 18:1 1987.01[民76.01] |
頁 次 | 頁15-21 |
分類號 | 460.02 |
關鍵詞 | 厚壁; 流體; 圓管; 熱傳; 冪次; |
語 文 | 英文(English) |
中文摘要 | 本文提出一種近似法以求解冪次流體在厚壁圓管中之熱傳問題並討論管壁熱傳導對熱傳速率之影響,結果發現管壁對熱傳速率之影響可以用三個參數來代表。雖然本文所提出之近似解應僅適用於近口附近,但是實際和特性承數展開法所得結果比較顯示本文之方法即使用在出口處誤差也在容許範圍之內。 |
英文摘要 | The effects of wall conduction on the rate of heat transfer of a finite length, thick-wall tube is presented in this work. An approximate method was used to find the solid-fluid interface temperature. With the interface temperature known, the fluid temperature profile as well as the rate of heat transfer were obtained analytically. Both constant wall temperature and constant wall flux were considered. It was found that the effect of wall conduction can be characterized by 3 parameters. The influences of these 3 parameters on the temperature profiles of fluid as well as Nusselt number were discussed. Although the approximate solution presented in this work is supposed to be valid only near the entrance, actual calculation shows that results of this approximate solution do not deviate significantly from the eigenfunction expansion solution even at the exit of the tube. |
本系統中英文摘要資訊取自各篇刊載內容。