Evaluation of Thermal Hydraulic Characteristics of a Two Phase Superhydrophobic Microfluidic Device using Volume of Fluid Method

IF 2.7 3区工程技术 Q2 ENGINEERING, MECHANICAL

Nanoscale and Microscale Thermophysical Engineering Pub Date : 2022-01-02 DOI:10.1080/15567265.2022.2070562

U. Aziz, M. Nadeem, Feng Xin, M. Kiliç, A. Ullah

引用次数: 1

Abstract

ABSTRACT The slug flow in a superhydrophobic microchannel with a T-junction was studied computationally. The continuous phase passed through the main channel while the dispersed phase 1 1. was introduced through the side channel. The volume of fluid (VOF) was employed to track the interface to study the dynamics of slug flow. First, a mesh independence study was carried out to select the optimum mesh by comparison of CFD results with experimental data. The developed model of microchannel was used to study slug flow heat transfer enhancement for micro cooling of electronic chips. The constant heat flux was applied on the walls of the microchannels and the axial wall temperature profile was noted. Upon quantification of heat transfer augmentation in terms of wall temperature reduction, Nusselt number and heat transfer coefficient enhancement, it was noted that slug flow performed much better vis-à-vis single-phase flows at similar conditions.

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用流体体积法评价两相超疏水微流控装置的热水力特性

摘要对T形超疏水微通道中的段塞流动进行了计算研究。连续相通过主通道，而分散相1 1。通过侧通道引入。利用流体体积（VOF）跟踪界面，研究段塞流的动力学特性。首先，通过CFD结果与实验数据的比较，进行了网格独立性研究，以选择最佳网格。利用所建立的微通道模型研究了电子芯片微冷却过程中的段塞流传热强化。在微通道的壁上施加恒定的热通量，并记录轴向壁温度分布。在根据壁温降低、努塞尔数和传热系数增强对传热增强进行量化后，注意到在类似条件下，段塞流相对于单相流表现得更好。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Nanoscale and Microscale Thermophysical Engineering 工程技术-材料科学：表征与测试

CiteScore

5.90

自引率

2.40%

发文量

审稿时长

3.3 months

期刊介绍： Nanoscale and Microscale Thermophysical Engineering is a journal covering the basic science and engineering of nanoscale and microscale energy and mass transport, conversion, and storage processes. In addition, the journal addresses the uses of these principles for device and system applications in the fields of energy, environment, information, medicine, and transportation. The journal publishes both original research articles and reviews of historical accounts, latest progresses, and future directions in this rapidly advancing field. Papers deal with such topics as: transport and interactions of electrons, phonons, photons, and spins in solids, interfacial energy transport and phase change processes, microscale and nanoscale fluid and mass transport and chemical reaction, molecular-level energy transport, storage, conversion, reaction, and phase transition, near field thermal radiation and plasmonic effects, ultrafast and high spatial resolution measurements, multi length and time scale modeling and computations, processing of nanostructured materials, including composites, micro and nanoscale manufacturing, energy conversion and storage devices and systems, thermal management devices and systems, microfluidic and nanofluidic devices and systems, molecular analysis devices and systems.