MHD flow and heat transfer near the stagnation point on a stretching/shrinking sheet in a micropolar fluid

Anuar, Ishak; Pop, Ioan

doi:10.22364/mhd.47.3.3

Cited by 5 publications

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“…Zaimi and Ishak [13] found that dual solutions exist in a certain range of buoyancy parameters. Dual solutions for a certain range of shrinking parameter also reported in the study by Bachok et al, [14,15]. Later, Mukhopadhyay [16] described the boundary layer flow and heat transfer towards a porous exponential stretching sheet in the presence of magnetic field.…”

Section: Introductionmentioning

confidence: 53%

Dual Solutions of MHD Stagnation Slip Flow Past a Permeable Plate

Junoh

Abdullah

Ali

2021

ARFMTS

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In this paper, dual solution to the problem of steady laminar magnetohydrodynamics boundary layer stagnation slip flow of the electrically conducting fluid over a permeable plate with suction effect is performed. The governing partial differential equations of the boundary layer are transformed into nonlinear ordinary differential equations via similarity transformations, and then numerically solved using the bvp4c method, which is the integrated algorithm of MATLAB. The effect of magnetic, slip and suction parameters on the skin friction coefficients and the velocity profiles and are presented in graphical form and discussed in detail. Dual solutions have been identified when suction is implied.

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Section: Introductionmentioning

confidence: 53%

Dual Solutions of MHD Stagnation Slip Flow Past a Permeable Plate

Junoh

Abdullah

Ali

2021

ARFMTS

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Unsteady Flow and Heat Transfer of a MHD Micropolar Fluid Over a Porous Stretching Sheet in the Presence of Thermal Radiation

2013

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A non-linear analysis has been made to study the unsteady hydromagnetic boundary layer flow and heat transfer of a micropolar fluid over a stretching sheet embedded in a porous medium. The effects of thermal radiation in the boundary layer flow over a stretching sheet have also been investigated. The system of governing partial differential equations in the boundary layer have reduced to a system of non-linear ordinary differential equations using a suitable similarity transformation. The resulting non-linear coupled ordinary differential equations are solved numerically by using an implicit finite difference scheme. The numerical results concern with the axial velocity, micro-rotation component and temperature profiles as well as local skin-friction coefficient and the rate of heat transfer at the sheet. The study reveals that the unsteady parameter S has an increasing effect on the flow and heat transfer characteristics.

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Soret and Dufour effects on convective heat and mass transfer in stagnation-point flow towards a shrinking surface

2014

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A mathematical model is presented to study the Soret and Dufour effects on the convective heat and mass transfer in stagnation-point flow of viscous incompressible fluid towards a shrinking surface. Suitable similarity transformations are used to convert the governing partial differential equations into self-similarity ordinary differential equations that are then numerically solved by shooting method. Dual solutions for temperature and concentration are obtained in the presence of Soret and Dufour effects. Graphical representations of the heat and mass transfer coefficients, the dimensionless thermal and solute profiles for various values of Prandtl number, Lewis number, Soret number and Dufour number are demonstrated. With Soret number the mass transfer coefficient which is related to mass transfer rate increases for both solutions and the heat transfer coefficient (related to heat transfer rate) for both solutions becomes larger with Dufour number. The Prandtl number causes reduction in heat and the mass transfer coefficients and similarly with the Lewis number mass transfer coefficient decreases. Also, double crossing over is found in dual dimensionless temperature profiles for increasing Soret number and in dual dimensionless concentration profiles for the increase in Dufour number. Due to the larger values of Dufour number the thermal boundary layer increases and for Prandtl number increment it decreases; whereas, the solute boundary layer thickness reduces with increasing values of Prandtl number and Lewis number.

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MHD flow and heat transfer near the stagnation point on a stretching/shrinking sheet in a micropolar fluid

Cited by 5 publications

References 0 publications

Dual Solutions of MHD Stagnation Slip Flow Past a Permeable Plate

Dual Solutions of MHD Stagnation Slip Flow Past a Permeable Plate

Unsteady Flow and Heat Transfer of a MHD Micropolar Fluid Over a Porous Stretching Sheet in the Presence of Thermal Radiation

Soret and Dufour effects on convective heat and mass transfer in stagnation-point flow towards a shrinking surface

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