BOUNDARY-LAYER FLOW OF A Cu-WATER NANOFLUID OVER A PERMEABLE SHRINKING CYLINDER WITH HOMOGENOUS-HETROGENOUS REACTIONS: Dual Solutions

被引：3

作者：

Zaib, Aurang ^{[1
]}

Khan, Masood ^{[2
]}

Shafie, Sharidan ^{[3
]}

机构：

[1] Fed Urdu Univ Arts Sci & Technol, Dept Math Sci, Karachi, Pakistan

[2] Quaid I Azam Univ, Dept Math, Islamabad, Pakistan

[3] Univ Technol Malaysia, Dept Math Sci, Fac Sci, Skudai, Johor, Malaysia

来源：

THERMAL SCIENCE | 2019年 / 23卷 / 01期

关键词：

dual solutions; nanofluid; homogenous-hetrogenous reactions; STAGNATION-POINT FLOW; HETEROGENEOUS REACTIONS; MIXED CONVECTION; HEAT-TRANSFER; STRETCHING SHEET; MODEL; SURFACE;

D O I：

10.2298/TSCI160613108Z

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

This research addresses the axi-symmetric flow of a Cu-water nanofluid past a porous shrinking cylinder in the presence of homogeneous-heterogeneous reactions. Using a similarity transformation, the basic PDE's are converted into ODE's. The transformed equations are solved using bvp4c numerically from MATLAB for several values of the physical parameters. The physical impact of governing parameters on the velocity profile, temperature profile, concentration profile as well as the skin friction coefficient, f ''(0), and the heat transfer rate, -theta'(0), are discussed carefully. The results indicate that the multiple solutions only exist when a certain value of suction is implemented through the permeable cylinder. Further, the curvature parameter, gamma, accelerates the boundary-layer separation.

引用

页码：295 / 306

页数：12

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