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Портал Begell Электронная Бибилиотека e-Книги Журналы Справочники и Сборники статей Коллекции
Computational Thermal Sciences: An International Journal
ESCI SJR: 0.249 SNIP: 0.434 CiteScore™: 1.4

ISSN Печать: 1940-2503
ISSN Онлайн: 1940-2554

Computational Thermal Sciences: An International Journal

DOI: 10.1615/ComputThermalScien.2019029098
pages 21-39

INFLUENCE OF VARIABLE LIQUID PROPERTIES ON MAGNETOHYDRODYNAMIC FLOW AND HEAT TRANSFER OF A CASSON LIQUID OVER A SLENDER ROTATING DISK: NUMERICAL AND OPTIMAL SOLUTION

Hanumesh Vaidya
Department of Mathematics, SSA Government First Grade College (Autonomous), Ballari-583101, Karnataka, India
K. V. Prasad
Department of Mathematics, Vijayanagara Sri Krishnadevaraya University Jnana Sagara Campus,Vinayaka Nagar Cantonment, Ballari-583 105, Karnataka, India
Kuppalapalle Vajravelu
Department of Mathematics, University of Central Florida, Orlando, Florida 32816-1364, USA
B. Srikantha Setty
Department of Mathematics, VSK University, Vinayaka Nagar, Ballari-583 105, Karnataka, India
Oluwole Daniel Makinde
Faculty of Military Science, Stellenbosch University, Private Bag X2, Saldanha 7395, South Africa

Краткое описание

The present work deals with magnetohydrodynamic (MHD) flow and heat transfer of a Casson liquid over a rotating disk with variable thickness. The effects of velocity slip, convective boundary condition, viscous dissipation, and internal heat generation/absorption are considered. The transport properties of the fluid, for example, viscosity dissipation and thermal conductivity, vary with temperature. The governing nonlinear partial differential equations of the problem are reduced to a system of nonlinear ordinary differential equations by the von Karman approach and are solved numerically as well as semi-analytically. The numerical results are compared with previous studies for a special case and found to be in excellent agreement. Impacts of the pertinent parameters on the velocity components and the temperature field are graphically presented and analyzed in detail. The temperature distribution gets augmented for raising the values of viscous dissipation; variable thermal conductivity, and heat source/sink parameter.

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