水基介质中高阶滑移平行板间二氧化硅和二氧化钛杂化纳米颗粒的化学反应挤压流分析

IF 3.2 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY
O.A. Famakinwa, O.K. Koriko, K.S. Adegbie
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引用次数: 0

摘要

考虑到混合纳米流体相对于对流流体在高传热率方面的重要性,纳米科学和纳米技术已经通过在基础流体中分散纳米颗粒来获得具有一系列性能和应用的新材料。在本研究中,采用三种不同的放热/吸热化学动力学,分析了在水基介质中通过两个高阶速度滑移的平行板输送二氧化硅和二氧化钛纳米颗粒的化学反应性挤压流。由流体模型得到的偏微分方程组在适当的相似变量的作用下,采用常微分形式。采用四阶龙格-库塔积分格式,结合射击技术,在MATLAB软件包中对修正后的常微分方程进行数值模拟。有限病例的检验效度与文献报道一致。从表格和图表中发现,混合纳米流体的速度和温度分布随着一阶滑移因子从0.2到1.0的变化而稳步下降,而随着二阶滑移因子的变化而增加。对于放热反应,当m= - 2,0,0.5时,随着活化能参数的增大,下板的传热速率降低了- 221.923%,而吸热反应则相反,传热速率增加了106.382%。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Analysis of chemically reactive squeezing flow of silica and titania hybrid nanoparticles in water-based medium between two parallel plates with higher order slip

Considering the significance of hybrid nanofluid over convectional fluid in terms of high rate of heat transfer, nanoscience and nanotechnology has been enhanced by dispersing nanoparticles in the base fluid to obtain new material with series of properties and applications. In this study, the analysis of chemically reactive squeezing flow conveying silica and titanium dioxide nanoparticles in water-based medium across two parallel plates with higher order velocity slip is carried out employing three different chemical kinetics for exothermic/endothermic reactions. The system of partial differential equations resulting from the fluid model assumed the ordinary differential form in alliance with appropriate similarity variables. The modified ordinary differential equations is simulated numerically in MATLAB software package using fourth order Runge–Kutta integration scheme in line with shooting techniques. The tested validity for limited case conform to preceding reports in the literature. The outcomes from the scrutiny uncovered in tables and graphs revealed that the velocity and temperature distributions of the hybrid nanofluid decrease steadily as first order slip factor varies from 0.2 to 1.0 but increase with second order slip factor at all levels of chemical kinetics. Moreover, for exothermic reaction, the rate of heat transfer decreases at the lower plate by 221.923% with increasing value of activation energy parameter when m=2,0,0.5 but converse is the case in endothermic reaction as the rate of heat transfer increases by 106.382%.

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来源期刊
Forces in mechanics
Forces in mechanics Mechanics of Materials
CiteScore
3.50
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