Convective Heat Transfer of the Rotational and Axial Flow between Two Concentric Cylinders
Convective Heat Transfer of the Rotational and Axial Flow between Two Concentric Cylinders
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DOI：
10.1299/jsme1958.7.385
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发表时间：
1963
期刊：
影响因子：
--
通讯作者：
Fujio Tachibana;S. Fukui
中科院分区：
文献类型：
--
作者：
Fujio Tachibana;S. Fukui
本文考虑了旋转内筒和静止外筒之间具有轴向流的环形间隙中的对流传热。实验结果表明，来自内旋转圆柱体表面的热流是以下两种热流的总和：一种是旋转引起的湍流涡流而不是泰勒涡流，另一种是湍流轴流热流。对于湍流涡流，我们有无轴流时总传热系数的经验方程： [数值公式] 此外，对于湍流轴流，我们有传热系数的经验方程 [数值公式] 这里显示了将两个热流相加的这种相关性如何适用于这种混合流的广泛范围。
This paper considers convective heat transfer to a flow in an annular gap with an axial flow between a rotating inner cylinder and a stationary outer cylinder. The experimental results indicate that the heat flow from the surface of the inner rotating cylinder is the sum of the following two kinds of the heat flow : one by turbulent vortices induced by rotation instead of Taylor vortices and the other by the turbulent axial flow. For turbulent vortices we have the empirical equation for the overall heat transfer coefficient when without an axial flow : [numerical formula] Moreover for the turbulent axial flow we have the empirical equation on the heat transfer coefficient [numerical formula] Here it is shown how this correlation of summing up the two heat flows is applicable to the wide regime of such mixed flow.