Department of Applied Sciences, National Textile University, Faisalabad, 37610, Pakistan.
Department of Mathematics and Natural Sciences, Prince Mohammad Bin Fahd University, Khobar, 31952, Saudi Arabia.
Sci Rep. 2023 Mar 6;13(1):3685. doi: 10.1038/s41598-023-30979-0.
An incredible eradication of thermal indulgence is required to enhance the flow and heat transfer enhancement in micro/nanofluidic devices. In addition, the rapid transport and instantaneous mixing of colloidal suspensions of metallic particles at nanoscale are exceptionally crucial at ascendency of inertial and surface forces. To address these challenges, the present work is intended to investigate the role of trimetallic nanofluid comprising of three kinds of nano-sized granules (titanium oxide, Silica and Aluminium dioxide) with pure blood through a heated micropump in the presence of inclined magnetic field and axially implemented electric field. To ensure rapid mixing in unidirectional flow, the pump internal surface is lined-up with mimetic motile cilia with slip boundary. The embedded cilia whip in pattern due to dynein molecular motion controlled by time and produce a set of metachronal waves along the pump wall. The shooting technique is executed to compute the numerical solution. In a comparative glance it is revealed that the trimetallic nanofluid exhibits 10% higher heat transfer efficiency as compared to bi-hybrid and mono nanofluids. Moreover, the involvement of electroosmosis results in almost 17% decrease in the heat transfer rate if it values jumps from 1 to 5. The fluid temperature in case of trimetallic nanofluid is higher and thus keeps the heat transfer entropy and the total entropy lower. Furthermore, involvement of thermal radiated and momentum slip significantly contribute in reducing heat losses.
为了提高微纳流道中的流动和传热增强效果,需要极大地消除热惯性。此外,在惯性力和表面力占主导地位的情况下,纳米尺度下胶体金属颗粒的快速传输和瞬时混合极其关键。为了解决这些挑战,本工作旨在研究包含三种纳米颗粒(氧化钛、二氧化硅和氧化铝)的三元纳米流体在倾斜磁场和轴向电场存在下通过加热微泵输送与纯血液混合的情况。为了确保单向流动中的快速混合,泵的内表面排列有模仿运动纤毛的滑移边界。嵌入的纤毛在动力蛋白分子运动的控制下呈鞭状摆动,并沿泵壁产生一组协调波。采用拍摄技术计算数值解。通过比较可以看出,三元纳米流体的传热效率比双杂交纳米流体和单纳米流体高 10%。此外,如果电渗流的值从 1 增加到 5,则会导致传热速率几乎降低 17%。在三元纳米流体的情况下,流体温度较高,从而保持较低的传热熵和总熵。此外,热辐射和动量滑移的参与显著有助于减少热损失。