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題名 | Flow and Heat Transfer Mechanisms of Non-Isothermal Fluids in Rotating Ducts=旋轉管道中非均溫流體之流動與熱傳機制 |
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作者 | 宋齊有; 顏維謀; Soong, Chyi-yeou; Yan, Wei-mon; |
期刊 | 國立臺灣大學工程學刊 |
出版日期 | 20010200 |
卷期 | 81 2001.02[民90.02] |
頁次 | 頁21-35 |
分類號 | 446.932 |
語文 | eng |
關鍵詞 | 旋轉管流; 非均溫流; 離心浮力; 二次流; 尺度分析; 熱流機制; Rotating duct flow; Non-isothermal flow; Centrifugal buoyancy; Secondary flow; Scaling analysis; Thermal flow mechanisms; |
中文摘要 | 本文討論旋轉管道中非均溫流體之熱流機制,強調重點為流場中旋轉力與流溫非均勻性之耦合效應。本文首先回顧過去數十年來旋轉管流相關之基礎研究文獻,再建立統一之徑向與平行旋轉管非均溫流統御方程組,用以分析旋轉力與二次流之量階大小。藉本文之尺度分析及作者近年之旋轉管混合對流理論與數值研究結果,總結此種熱流特性。本研究所提煉之物理洞察力對闡釋此種旋轉流之熱流特性極有助益。最後,本文將提出未來研究具潛力之論題。 |
英文摘要 | This paper deals with the thermal flow mechanisms of non-isothermal fluids in rotating ducts with emphasis on the coupling effects of the fluid temperature non-uniformity and the rotating forces. We first present a brief review of the previous literatures related to the fundamental research on this topic over the past decades. Then, by a unified formulation for non-isothermal flows in ducts of radial and parallel modes, order-of-magnitudes of the rotational forces and the secondary flow are analyzed. With the results of the present scale analysis and recent theoretical/numerical studies of mixed convection in rotating ducts, the non-isothermal flow and heat transfer characteristics are summarized. Physical insights extracted from the present analysis are useful to manifest the flow and heat transfer characteristics in this class of rotating fluids. Finally, the potential issues are proposed for the future studies. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。