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題 名 | Conjugate Mixed Convection-Conduction Heat Transfer from a Vertical Cylindrical Fin=傳導與對流共軛作用下之垂直圓柱散熱片的熱傳分析 |
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作 者 | 王添益; | 書刊名 | 明志工專學報 |
卷 期 | 27 1995.05[民84.05] |
頁 次 | 頁17-31 |
分類號 | 440.137 |
關鍵詞 | 垂直圓柱散熱片; 混合熱對流參數; 橫向曲率參數; 對流傳導共軛參數; 熱傳遞係數; 熱通量; Vertical cylindrical fin; Mixed convection; Transverse curvature parameter; Conjugated convection-conduction parameter; Heat transfer coefficient; Heat flux; |
語 文 | 英文(English) |
中文摘要 | 本文中經由考慮散熱片中之熱傳導及周圍流體之熱對流間之交互作用,提出一分析方 以研究一垂直圓柱散熱片之層流熱對之熱傳特性。在文中並提議一混合熱對流參數,作為決定強迫對流及自然對流間相對重要性之控制參數。另外,藉由座標及應變數之轉換,得到一相當有效的數值解,它適合於整個混合熱對流領域,包含由純強迫對流之極限至純自然對流之極限,由於在散熱片表面之熱通量及溫均須合乎相容條件,流體邊界層與散熱片之熱傳導方程式必須同時求解。有關混合熱對流參數、橫向曲率參數、普朗特數及對流傳導共軛參數等對於熱傳遞係數、熱通量及聚熱片溫度分佈之影響都在文中清楚地作了說明。 |
英文摘要 | By considering the interaction between conduction within the fin and convection to the fluid surrounding the fin, an analysis is presented to study the heat transfer characteristics of laminar mixed convection of a Newtonian fluid flow over a vertical cylindrical fin. A mixed convection parameter is proposed to serve as a controlling parameter that determines the relative importance of the forced and the natural convection. Furthermore, the coordinates and dependent variables are transformed to yield computationally efficient numerical solutions which are valid over the entire range of mixed convection from the pure forced convection limit to the pure natural convection limit. Due to the compatibility conditions of heat flux and temperature at the surface of fin, the boundary layer equations of the fluid are coupled with the heat conduction of the fin and should be solved simultaneously. The effects of mixed convection, transverse curvature parameter, fluid Prandtl number and conjugate convection-conduction paramenter on the local heat transfer coefficient, local heat flux and temperature distribution of the fin are clearly illustrated. |
本系統中英文摘要資訊取自各篇刊載內容。