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首页> 外文期刊>Journal of enhanced heat transfer >AN EXPERIMENTAL INVESTIGATION OF HEAT TRANSFER PERFORMANCE OF WAVY CHANNELS UNDER LAMINAR FLOW CONDITIONS: AN INTERFEROMETRIC STUDY
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AN EXPERIMENTAL INVESTIGATION OF HEAT TRANSFER PERFORMANCE OF WAVY CHANNELS UNDER LAMINAR FLOW CONDITIONS: AN INTERFEROMETRIC STUDY

机译：层流条件下波状通道传热性能的实验研究：干涉性研究

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摘要

The thermal performance of wavy channels with different phase shifts (phi = 0 degrees and 180 degrees) introduced between the top and bottom conducting walls was experimentally investigated using a typical Mach-Zehnder interferometer. The experiments were performed on compact plane and wavy channels (with varying phase shifts and similar hydraulic diameters) in deionized water (Pr = 6.13) for a range of Reynolds numbers (Re = 350-1000). The interferometric fringes were recorded in both infinite and wedge fringe setting modes and then used to qualitatively and quantitatively analyze the local and average profiles of the thermal boundary layer thickness and heat transfer rates. The effects of the phase shifts and Reynolds numbers on the heat transfer rates are discussed. The experimental results show an increment in the heat transfer rates in the wavy channel geometries compared to straight channels, accompanied by an increased pressure drop. The thermal performance factor (TPF) was evaluated, and it was observed that the TPF increased with increasing Reynolds numbers in the wavy channels at both phase shifts (phi = 0 degrees and 180 degrees).
机译：通过典型的Mach-Zehnder干涉仪通过实验研究了在顶部和底部导电壁之间引入的不同相移（PHI = 0度和180度）的波状通道的热性能。在雷诺数（RE = 350-1000）中，在去离子水（PR = 6.13）中的紧凑型平面和波状通道（具有不同相移和类似的液压直径）上进行实验（PR = 6.13）（RE = 350-1000）。在无限和楔形条纹设定模式中记录干涉系数，然后用于定性和定量地分析热边界层厚度和传热速率的局部和平均曲线。讨论了相移和雷诺数对传热速率的影响。实验结果表明，与直线通道相比，波浪通道几何形状的传​​热速率的增量伴随着增加的压降。评估热性能因子（TPF），观察到TPF随着两个相移（PHI = 0度和180度）的波浪通道中的雷诺数增加。

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