Liquid–liquid slug flow heat transfer in microchannels has been an interesting topic of research to many researchers. However, the heat transfer studies available in the existing literature deal with stationary walls of the microchannels. In the present work, a modulated motion is prescribed to the walls of the channel in the transverse direction during oil–water slug flow between micro-parallel plates. The influence of frequency and amplification factor of the modulated wall motion as well as capillary number on the droplet shape, film thickness, pressure drop, and heat transfer rate under uniform wall heat flux conditions is investigated computationally. The heat transfer results for the modulated wall motion case show a significant improvement over liquid-only flow and slug flow without any wall motion. Besides, the effect of slug length on the heat transfer has also been discussed for both modulated and unmodulated wall motions of the channel. A mean absolute deviation of 2%–75% in the pressure drop o...

中文翻译：

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用于增强两个微平行板之间的段塞流传热的调制壁运动方法

微通道中的液-液段塞流热传递一直是许多研究人员感兴趣的研究课题。然而，现有文献中可用的传热研究涉及微通道的固定壁。在目前的工作中，在微平行板之间的油水段塞流期间，在横向方向上对通道壁规定了调制运动。通过计算研究了壁面运动的频率和放大系数以及毛细管数对均匀壁面热通量条件下液滴形状、膜厚、压降和传热速率的影响。调制壁面运动情况的传热结果表明，与没有任何壁面运动的仅液体流动和段塞流相比，有显着的改进。除了，还针对通道的调制和未调制壁运动讨论了段塞长度对传热的影响。压降的平均绝对偏差为 2%–75%...