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Computational Thermal Sciences: An International Journal
ESCI SJR: 0.249 SNIP: 0.434 CiteScore™: 0.7

ISSN Imprimir: 1940-2503
ISSN On-line: 1940-2554

Computational Thermal Sciences: An International Journal

DOI: 10.1615/ComputThermalScien.2018020807
pages 457-471

MHD FLOW INSIDE A STRETCHING/SHRINKING CONVERGENT/DIVERGENT CHANNEL WITH HEAT GENERATION/ABSORPTION AND VISCOUS-OHMIC DISSIPATION UTILIZING CU−WATER NANOFLUID

Alok Kumar Pandey
Department of Mathematics, Statistics and Computer Science, G.B. Pant University of Agriculture and Technology, Uttarakhand-263145, India; Department of Mathematics, Graphic Era Deemed to be University, Dehradun, Uttarakhand, India
Manoj Kumar
Department of Mathematics, Statistics, and Computer Science, G. B. Pant University of Agriculture and Technology, Pantnagar, Uttarakhand 263145, India

RESUMO

The goal of the present study is to analyze the magnetohydrodynamic flow of Cu−water nanofluid between two stretchable/shrinking channels due to the effects of heat generation/absorption, viscous dissipation, and Ohmic heating. The model of thermal conductivity and dynamic viscosity is based on the spherical shape of nanoparticles. The numerical method Runge−Kutta−Fehlberg fourth- to fifth-order scheme has been employed with a shooting scheme to solve the transformed ordinary differential equations. The numerical solution of several dominant parameters, that is, heat generation/absorption parameter, magnetic field parameter, and Eckert number, are obtained. The results signify that velocity profiles of stretching divergent channels decrease with a boost in Hartmann number, while for the same case, temperature curves constantly enhance. The shear stress rate is augmented with Hartmann number for stretching convergent/divergent channels. An admirable agreement has been noticed on comparing present results with earlier studies.