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International Journal of Fluid Mechanics Research
ESCI SJR: 0.206 SNIP: 0.446 CiteScore™: 0.9

ISSN Imprimir: 2152-5102
ISSN On-line: 2152-5110

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International Journal of Fluid Mechanics Research

DOI: 10.1615/InterJFluidMechRes.v27.i1.20
pages 13-32

Natural Convection from Combined Thermal and Mass Diffusion Buoyancy Effects in Micropolar Fluids

M. A. EL-Hakiem
Mathematics Department, Aswan Faculty of Science, South Valley University, Aswan, Egypt
S.M.M. EL-Kabeir
Department of Mathematics, Salman bin Abdulaziz University, College of Science and Humanity Studies, Al-Kharj, 11942, Saudi Arabia; Department of Mathematics, Aswan University, Faculty of Science, 81528, Egypt
Rama Subba Reddy Gorla
Department of Mechanical Engineering, Cleveland State University, Cleveland, OH, 44115 USA; Department of Mechanical Engineering, University of Akron, Akron, Ohio 44325, USA; Department of Mechanical & Civil Engineering, Purdue University Northwest, Westville, IN 46391, USA

RESUMO

A regular parameter perturbation analysis is presented to study the effect of combined thermal and diffusion buoyancy in the presence of both viscous dissipation and pressure stress in micropolar fluids on natural convection flows. The following natural convective flows are analyzed: those adjacent to an isothermal surface and uniform heat flux surface, a plane plume and flow generated from a horizontal line energy source on a vertical adiabatic surface. The velocity, microrotation distribution, temperature and concentration profiles are shown. Numerical results are obtained for the local Nusselt number as well as Sherwood number, wall shear stress and wall couple stress.


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