The influence of radiation absorption on unsteady free convection and mass transfer flow of a polar fluid in the presence of a uniform magnetic field

2005 ◽  
Vol 48 (23-24) ◽  
pp. 5078-5080 ◽  
Author(s):  
A. Ogulu
Keyword(s):  
Magnetic Field ◽  
Mass Transfer ◽  
Free Convection ◽  
Uniform Magnetic Field ◽  
Radiation Absorption ◽  
Polar Fluid ◽  
Transfer Flow

scholarly journals Free Convection Heat and Mass Transfer Flow of Chemically Reactive and Radiation Absorption Fluid in an Aligned Magnetic Filed

2015 ◽  
Vol 127 ◽  
pp. 575-582 ◽  
Author(s):  
V. Prabhakara Reddy ◽  
R.V.M.S.S. Kiran Kumar ◽  
G. Viswanatha Reddy ◽  
P. Durga Prasad ◽  
S.V.K. Varma
Keyword(s):  
Mass Transfer ◽  
Free Convection ◽  
Heat And Mass Transfer ◽  
Radiation Absorption ◽  
Convection Heat ◽  
Free Convection Heat ◽  
Magnetic Filed ◽  
Transfer Flow

scholarly journals Finite element analysis for unsteady MHD heat and mass transfer free convection flow of polar fluids past a vertical moving porous plate in a porous medium with heat generation and thermal diffusion

2014 ◽  
Vol 11 (1) ◽  
pp. 69-82 ◽  
Author(s):  
Bala Siddulu Malga ◽  
Naikoti Kishan
Keyword(s):  
Magnetic Field ◽  
Mass Transfer ◽  
Finite Element ◽  
Porous Medium ◽  
Free Convection ◽  
Heat And Mass Transfer ◽  
Heat Generation ◽  
Convection Flow ◽  
Free Convection Flow ◽  
Polar Fluid

The unsteady two-dimensional magnetohydrodynamic heat and mass transfer free convection flow of an incompressible viscous electrically conducting polar fluid through a porous medium past a semi-infinite vertical porous moving plate in the presence of a transverse magnetic field with thermal diffusion and heat generation is considered. The plate moves with a constant velocity in the longitudinal direction and the free stream velocity follows an exponentially increasing or decreasing. A uniform magnetic field acts perpendicularly to the porous surface which absorbs the polar fluid with a suction velocity varying with time. The equations of conservation of mass, momentum, energy and concentration which govern the case study of heat and mass transfer flow have been obtained. The equations have been solved numerically by Galerkin finite element method. The effect of various flow parameters are presented graphically. Representative results for velocity profiles, temperature profiles and concentration profiles are obtained for several values of pertinent parameters which are of physical and engineering interest.DOI: http://dx.doi.org/10.3329/jname.v11i1.12844

MHD natural convection of Cu/H2O nanofluid in a horizontal semi-cylinder with a local triangular heater

2018 ◽  
Vol 28 (12) ◽  
pp. 2979-2996 ◽  
Author(s):  
A.S. Dogonchi ◽  
Mikhail A. Sheremet ◽  
Ioan Pop ◽  
D.D. Ganji
Keyword(s):  
Magnetic Field ◽  
Rayleigh Number ◽  
Free Convection ◽  
Shape Factor ◽  
Uniform Magnetic Field ◽  
Hartmann Number ◽  
Volume Fraction ◽  
Horizontal Cylinder ◽  
Content Type ◽  
Nanoparticles Volume Fraction

Purpose The purpose of this study is to investigate free convection of copper-water nanofluid in an upper half of circular horizontal cylinder with a local triangular heater under the effects of uniform magnetic field and cold cylinder shell using control volume finite element method (CVFEM). Design/methodology/approach Governing equations formulated in dimensionless stream function, vorticity and temperature variables using the single-phase nanofluid model with Brinkman correlation for the effective dynamic viscosity and Hamilton and Crosser model for the effective thermal conductivity have been solved numerically by CVFEM. Findings The impacts of control parameters such as the Rayleigh number, Hartmann number, nanoparticles volume fraction, local triangular heater size, shape factor on streamlines and isotherms as well as local and average Nusselt numbers have been examined. The outcomes indicate that the average Nusselt number is an increasing function of the Rayleigh number, shape factor and nanoparticles volume fraction, while it is a decreasing function of the Hartmann number. Originality/value A complete study of the free convection of copper-water nanofluid in an upper half of circular horizontal cylinder with a local triangular heater under the effects of uniform magnetic field and cold cylinder shell using CVFEM is addressed.

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