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Heat measures in performance of electro-osmotic flow of Williamson fluid in micro-channel
Alexandria Engineering Journal ( IF 6.2 ) Pub Date : 2020-07-17 , DOI: 10.1016/j.aej.2020.07.013
S. Noreen , S. Waheed , DC. Lu , Abid Hussanan

Present study signifies the thermal analysis of the electroosmotic flow of Williamson fluid in the presence of peristaltic propulsion and asymmetric zeta potential at the walls. The present study addresses this thermal configuration for the very first time. The state of art of study is to explore the heat transport in electroosmotic biological flows with applications like smart sensors, food diagnostics and DNA chips. The governing equations are simplified by using reliable approximation, namely lubrication and Debye-Hückel approximation. The resulting equation is then solved analytically and numerically by the perturbation technique and using Mathematica software. Physical quantities are analyzed under various dominant parameters. The heat transfer coefficient and shear stresses are also determined. Bolus dynamics are also visualized. It is observed from the analysis that an increase in electroosmosis effect leads to an increase in temperature and temperature of Newtonian fluid is more as compared to Non-Newtonian fluid. The presence of asymmetric zeta potential is a key phenomenon in controlling fluid flow in the microchannel. Temperature increases for increased electroosmotic strength me, mobility of the medium β and Brinkman number Br.



中文翻译:

微通道中威廉姆森流体电渗流性能的热测量

目前的研究表明,在壁上存在蠕动推进和不对称ζ电势的情况下,对威廉姆森流体的电渗流进行了热分析。本研究首次解决了这种热配置问题。目前的研究水平是通过智能传感器,食品诊断和DNA芯片等应用探索电渗生物流中的热传递。通过使用可靠的近似,即润滑和Debye-Hückel近似,简化了控制方程。然后,通过摄动技术并使用Mathematica软件,对所得方程进行解析和数值求解。在各种主要参数下分析物理量。还确定了传热系数和剪切应力。团动态也可视化。从分析中观察到,电渗效应的增加导致温度的升高,并且与非牛顿流体相比,牛顿流体的温度更高。不对称ζ电势的存在是控制微通道中流体流动的关键现象。温度升高以增加电渗强度Ë 介质的流动性 β 和布林克曼数 [R

更新日期:2020-07-17
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