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Theoretical and numerical analysis of convective heat transfer in the rotating helical pipes

机译：旋转螺旋管内对流换热的理论和数值分析

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摘要

In terms of the tensor analysis technique, the relative N-S equations and the energy equation in a rotating helical coordinate system are presented in this paper. Convective heat transfer in the rotating helical pipes with circular cross-section is investigated employing theoretical and numerical method. A perturbation solution up to the secondary order is obtained for a small Dean number. Variations of the temperature distribution with the force ratio (the ratio of the Coriolis force to the centrifugal force), the curvature and the torsion are discussed in detail. Present studies also show the natures of the Nusselt number, as well as the effects of the force ratio, the curvature, and the torsion. This study explores many new characteristics of convective heat transfer in the rotating helical pipes and covers wide ranges of parameters.
机译：根据张量分析技术，提出了旋转螺旋坐标系中的相对N-S方程和能量方程。利用理论和数值方法研究了圆形截面旋转螺旋管中的对流换热。对于较小的Dean数，获得了直到二级的摄动解。详细讨论了温度分布随力比（科里奥利力与离心力之比），曲率和扭转的变化。当前的研究还显示了Nusselt数的性质，以及力比，曲率和扭转的影响。这项研究探索了旋转螺旋管中对流传热的许多新特性，并涵盖了广泛的参数范围。

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