Successive linearisation analysis of unsteady heat and mass transfer from a stretching surface embedded in a porous medium with suction/injection and thermal radiation effects

The boundary layer heat and mass transfer flow of Casson nanofluid over a stretching sheet with constant wall temperature (CWT) under the magnetic field and thermal radiation effects is investigated numerically. Using similarity transformations, the governing equations are reduced to a set of nonlinear ordinary differential equations (ODEs). These equations are solved numerically by Shooting method. The effects of Casson parameter, magnetic parameter, porosity parameter, radiation parameter, Prandtl number, Brownian parameter and thermophoresis parameter on velocity, temperature and concentration fields are shown graphically and discussed. The results show that increase in Casson parameter causes the wall temperature increase well in the nanofluid.

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Thermal Radiation Effects on Heat and Mass Transfer of Magnetohydrodynamics Dusty Jeffrey Fluid past an Exponentially Stretching Sheet

MATEMATIKA ◽

10.11113/matematika.v35.n2.1172 ◽

2019 ◽

Vol 35 (2) ◽

pp. 187-200

Author(s):

Siti Nur Haseela Izani ◽

Anati Ali

Keyword(s):

Mass Transfer ◽

Thermal Radiation ◽

Heat And Mass Transfer ◽

Radiation Effects ◽

Stretching Sheet ◽

Dust Particles ◽

Jeffrey Fluid ◽

Exponentially Stretching Sheet ◽

Keller Box Method ◽

Exponentially Stretching

The heat and mass transfer of steady magnetohydrodynamics of dusty Jeffrey fluid past an exponentially stretching sheet in the presence of thermal radiation have been investigated. The main purpose of this study is to conduct a detailed analysis of flow behaviour of suspended dust particles in non-Newtonian fluid. The governing equations hav been converted into dimensionless form, and then solved numerically via the Keller-box method. The expression of Sherwood number, Nusselt number and skin friction have been evaluated, and then displayed in tabular forms. Velocity, temperature and concentration profiles are presented graphically. It is observed that large value of dust particles mass concentration parameter has reduced the flow velocity significantly. Increase in radiation parameter enhances the temperature, whereas the increment in Schmidt number parameter reduces the concentration.

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Hall Current and Thermal Radiation Effects on Heat and Mass Transfer of Unsteady MHD Flow of a Viscoelastic Micropolar Fluid through a Porous Medium

10.37934/arfmts.68.1.110 ◽

2020 ◽

Vol 68 (1) ◽

pp. 1-10

Author(s):

Lavanya

Keyword(s):

Mass Transfer ◽

Porous Medium ◽

Thermal Radiation ◽

Micropolar Fluid ◽

Radiation Effects ◽

Hall Current ◽

Perturbation Technique ◽

Mhd Flow ◽

Skin Friction Coefficient ◽

Governing Equations

The present paper is concerned to analyze the effect of hall current on heat and thermal radiation and mass transfer of unsteady MHD flow of a viscoelastic micropolar fluid through a porous medium with chemical reaction. The governing partial differential equations are transformed to dimensionless equations using dimensionless variables. The dimensionless governing equations are then solved analytically using perturbation technique. The effects of various governing parameters on the velocity, temperature, concentration, skin-friction coefficient, Nusselt number and Sherwood number are shown in figures and tables and analyzed in detail.

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