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Numerical Analysis of Rotational Heat Pipe

旋轉熱管之數值分析

摘要


本文以數值方法研究旋轉熱管中蒸汽之運動行爲。旋轉熱管之轉速控制於0至5000rpm之間,而徑向雷諾數則控制於4與24之間。論文中採用二維軸對稱模式,並以SIMPLE方法數值解出聯立方程式,文中比較軸向與徑向速度分佈,結果顯示,高轉速將造成熱管中之環流現象,離心力對速度場之影響隨著徑向雷諾數之增加而減小。本文結果可提功相關工業界之設計資訊。

關鍵字

熱管 徑向雷諾數 旋轉 環流

並列摘要


The vapor flow behaviors are studied for a rotating heat pipe. The rotational speed ranging from 0 to 5000 rpm and the radial Reynolds number ranging from 4 to 24 are used as parameters. A two- dimensional and axisymmetric model is built and solved by SIMPLE method. The axial and the radial velocity fields are presented. The result shows that the high rotational speed causes main annular flows in the heat pipe. The influence of centrifugal force on the velocity profiles is decreased with the increase of radial Reynolds number. The result can provide design information for the related industries.

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