Numerical Analysis of Couple Stress Nanofluid in Temperature Dependent Viscosity and Thermal Conductivity

被引：1

作者：

Dhlamini M. ^{[1
]}

Mondal H. ^{[2
]}

Sibanda P. ^{[3
]}

Motsa S. ^{[4
]}

机构：

[1] Department of Applied Mathematics, National University of Science and Technology, Ascot Bulawayo

[2] Department of Applied Science, Maulana Abul Kalam Azad University of Technology, Kolkata, 741249, West Bengal

[3] School of Mathematics, Statistics and Computer Science, University of KwaZulu-Natal, Pietermaritzburg

[4] Department of Mathematics, University of Swaziland, Private Bag 4 K, Waluseni

来源：

International Journal of Applied and Computational Mathematics | 2021年 / 7卷 / 2期

关键词：

76W05; Couple stress fluid; Temperature dependent parameter; Variable thermal conductivity; Variable viscosity;

D O I：

10.1007/s40819-021-00983-x

中图分类号：

学科分类号：

摘要：

This communication reports on an innovative study of two-dimensional couple stress fluid 3 with effect of viscosity and conductivity. We proposed a new model based on temperature dependent variable thermal conductivity on kinetic theory. Our model assumes that thermal conductivity is a decreasing function of temperature rather than an increasing function. The effect of the three key parameters, viscosity, thermal conductivity and couple stress parameter are analyzed. The coupled non-linear system is further validated numerically using the spectral quasilinearization method. The method is found to be accurate and convergent. Increasing the temperature dependent parameter for viscosity is shown to reduce the heat mass transfer rates at the surface. Increasing thermal conductivity and the couple stress parameter increased the heat mass transfer rates on the boundary surface. © 2021, The Author(s), under exclusive licence to Springer Nature India Private Limited.

引用

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