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首页> 外文期刊>Heat transfer >Longitudinal Heat Transfer Enhanced by Fluid Oscillation in a Circular Pipe with Conductive Wall
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Longitudinal Heat Transfer Enhanced by Fluid Oscillation in a Circular Pipe with Conductive Wall

机译：导电壁圆管中的流体振荡增强了纵向传热

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摘要

The longitudinal heat transfer in capillary pipes is enhanced by fluid oscillation. The analytical solution to this phenomenon was obtained considering the wall thermal conductivity. Based on this solution, the effects of wall conductivity and thickness were investigated for the case of large amplitude of fluid motion. The longitudinal heat transfer through the fluid part was more enhanced in highly conductive thick pipes. This is because the region where the heat is transferred backwards is smaller in these pipe sections. The direction of longitudinal heat transfer depends on the phase difference of temporary change between the velocity and temperature; it depends on whether or not the difference exceeds π/2. From this point of view, the most effective wall regarding this problem is presented, where the wall temperature does not change preserving the mean temperature of the location during the oscillation.
机译：流体振荡增强了毛细管中的纵向传热。考虑到壁的导热性，获得了针对该现象的分析解决方案。基于此解决方案，研究了流体运动幅度较大时壁电导率和壁厚的影响。在高导热的厚管中，通过流体部分的纵向传热得到了更大的增强。这是因为在这些管段中，热量向后传递的区域较小。纵向传热的方向取决于速度和温度之间暂时变化的相位差。这取决于差是否超过π/ 2。从这一观点出发，提出了关于该问题的最有效的壁，其中壁的温度不变，在振荡期间保持该位置的平均温度。

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