MHD Free Convective Flow Past Research Articles

Effects of Thermal Radiation on Temperature and Concentration on MHD Free Convection Flow Past a Vertical Porous Plate in the Presence of Chemical Reaction and Heat Source Parameter

Objective: To study the effects of chemical reaction and heat source parameter on MHD Free Convection Flow Past a Vertical Porous Plate. Method: The problem is represented by coupled non-direct fractional differential conditions. The non-dimensional conditions of the issue have been tackled mathematically utilizing the Finite-Element strategy. Findings: The effects of governing parameters such as chemical reaction, heat source, permeability, radiation and many others are discussed quantitatively with the help of graphs in these flow fields like velocity, temperature, concentration with the help of skin friction, Nusselt number and Sherwood number. Novelty: The accurateness of the solution to the problem was verified by comparing it with the published previously. The compatibility between the results was found to be high. To strengthen the validity of the numerical results were presented in this work. Keywords: Temparature; Concentration; Chemical reaction; Mass diffusion; Eckert numeral; Radiation; MHD; Time dependent variable

Unsteady MHD Free Convective Flow Past a Vertical Porous Plate with Span-Wise Fluctuating Heat and Mass Transfer Effects

Unsteady MHD Free Convective Flow Past a Vertical Porous Plate with Span-Wise Fluctuating Heat and Mass Transfer Effects

MHD Free Convective Flow Past a Vertical Porous Plate in a Porous Medium in the Presence of Soret and Dofour Effects

A steady MHD free convective heat and mass transfer flow past a semi-infinite vertical porous plate in the presence of Soret and Dofour effects has been studied in this paper. The governing equations are solved numerically by Runge – Kutta fourth order method along with shooting technique. The effect of various governing parameters for velocity, temperature, concentration; skin-friction, Nusselt number and Sherwood number are also obtained. The effects of various parameters have been shown numerically and discussed graphically.

English

English

Soret Effect on Unsteady MHD Free Convection Flow Past an Impulsively Started Vertical Plate with Chemical Reaction

In this paper, we are analyzing Soret effect and inclined magnetic field on unsteady free convection MHD flow past an impulsively started vertical plate with chemical reaction. Fluid considered is electrically conducting. The Laplace transform method has been used to find the exact solutions for the concentration, momentum and energy equations. The flow model consists of a magnetic field inclined from vertical by an angle . The flow is considered unsteady and heat is transferred through free convection. The velocity profiles are discussed with the help of graphs drawn for different parameters like thermal Grashof number, the Soret number, the Prandtl number, the chemical reaction parameter, the Hartmann number, the Schmidt number, the mass Grashof number, time and inclination of magnetic field. The numerical values of skin friction have been discussed with the help of table for different parameters.

Heat and Mass Transfer Analysis of Steady MHD Free Convective Fluid Flow Past an Inclined Stretching Porous Sheet with Viscous Dissipation and Radiation

Heat and Mass Transfer Analysis of Steady MHD Free Convective Fluid Flow Past an Inclined Stretching Porous Sheet with Viscous Dissipation and Radiation

Heat and Mass Transfer Analysis of Steady MHD Free Convective Fluid Flow Past an Inclined Stretching Porous Sheet with Viscous Dissipation and Radiation

Heat and Mass Transfer Analysis of Steady MHD Free Convective Fluid Flow Past an Inclined Stretching Porous Sheet with Viscous Dissipation and Radiation

Unsteady MHD Free Convective Heat and Mass Transfer Flow Past a Vertical Porous Plate in the Presence of Radiation and Chemical Reaction

The objective of this paper is to analyze an unsteady MHD free convective heat and mass transfer boundary flow past a semi-infinite vertical porous plate immersed in a porous medium with radiation and chemical reaction. The governing equations of the flow field are solved numerical a two term perturbation method. The effects of the various parameters on the velocity, temperature and concentration profiles are presented graphically and values of skin-frication coefficient, Nusselt number and Sherwood number for various values of physical parameters are presented through tables.

Behaviour of Non-Newtonian Casson Fluid on MHD Free Convective Flow Past a Vertically Inclined Surface Surrounded by Porous Medium Including Thermal Diffusion: A Finite Element Technique

Behaviour of Non-Newtonian Casson Fluid on MHD Free Convective Flow Past a Vertically Inclined Surface Surrounded by Porous Medium Including Thermal Diffusion: A Finite Element Technique

Soret and Dufour Effects on MHD Free Convective Flow Past a Semi Infinite Vertical Permeable Moving Porous Plate with Heat and Mass Transfer

Soret and Dufour Effects on MHD Free Convective Flow Past a Semi Infinite Vertical Permeable Moving Porous Plate with Heat and Mass Transfer

Unsteady MHD Free Convective Flow Past an Inclined Parabolic Accelerated Plate with Hall Current, Radiation Effects and Variable Temperature in a Porous Medium

We analyze the effects of hall current and radiation on unsteady hydromagnetic free convection flow of a viscous incompressible electrically conducting fluid past an inclined parabolic accelerated plate in a porous medium by applying a transverse magnetic field which makes an angle α to the inclined plate.The fluid is assumed to be viscous, incompressible and electrically conducting with a strong magnetic field. Using the modified Ohm’s law and the Bossinesq approximation the governing equations of the problem are reduced to local non-similarity boundary layer equations using suitable transformation.The dimensionless governing equations of flow field are solved numerically by Crank-Nicolson finite difference method for different values of governing flow parameters. The velocity and temperature profiles are shown through graphs.

Soret and Dufour Effects on MHD Free Convective Flow Past a Vertical Porous Plate in the Presence of Heat Generation

An MHD fluid flow is examined over a vertical plate in the presence of Dufour and Soret effects. The resulting momentum, energy and concentration equations are then made similar by introducing the usual similarity transformations. These similar equations are then solved numerically using the Runge-Kutta fourth order method with shooting technique. The effects of various parameters on the dimensionless velocity, temperature and concentration profiles as well as the local values of the skin-friction coefficient, the Nusselt number and Sherwood number are displayed graphically and in a tabular form. A comparison with previously published work is obtained and an excellent agreement is found.

Numerical Investigation of Unsteady MHD Free Convective Flow Past an Oscillating Vertical Porous Plate with Oscillatory Heat Flux

Numerical Investigation of Unsteady MHD Free Convective Flow Past an Oscillating Vertical Porous Plate with Oscillatory Heat Flux

MHD Free-Convective and Mass Transfer Flow Past a Continuously Moving Semi-Infinite Vertical Porous Plate with Thermal Diffusion

A steady two dimensional MHD free convective and mass transfer flow of an incompressible fluid past a continuously moving vertical infinite porous plate in the presence of thermal diffusion has been studied. The governing partial differential equations of the MHD free convective boundary layer flow are reduced to nonlinear ordinary differential equations by introducing suitable similarity transformations. The nonlinear similarity equations are then solved numerically by Nachtshiem-Swigert iteration technique. The results of the numerical solution are then presented graphically in the form of velocity, temperature and concentration profiles. The corresponding skin friction coefficient, the Nusselt number and the Sherwood number are also calculated and displayed in tables showing the effects of various parameters on them.

Effects of Time Dependent Variable Temperature and Concentration Boundary Layer on MHD Free Convection Flow Past a Vertical Porous Plate in the Presence of Thermal Radiation and Chemical Reaction

An analytical solution is presented for the case of time dependent variable temperature and variable concentration boundary layer on unsteady MHD free convection flow past a vertical porous plate in the presence of thermal radiation, thermal diffusion and first order chemical reaction. The dimension less governing equations are solved analytically and the expressions for temperature, concentration and velocity fields are determined using the Laplace transform technique. Finally, the influence of various physical parameters on the temperature, concentration and velocity fields is graphically studied and discussed. The expressions for local skin friction, Nusselt number and Sherwood number are derived and discussed with the help of tables. It noticed that Skin friction increase with an increase in magnetic parameter, Prandtl number, radiation parameter and chemical reaction parameter while it decrease with an increase in Grashof number, modified Grashof number, permeability parameter, heat source and Schmidt number. The rate of heat transfer increase with increasing values of Prandtl number and radiation parameter while it decreases with increasing value of heat source. The rate of mass transfer increases with increasing values of Schmidt number and chemical reaction parameter.

Effects of Variable Viscosity and Thermal Conductivity on MHD Free Convective Flow Past an Inclined Surface with Viscous and Joule Dissipation

investigation has been made to study the effects of variable viscosity and thermal conductivity on the steady two- dimensional MHD free convection and mass transfer flow past an inclined semi-infinite surface in the presence of heat generation along with viscous and Joule dissipation. The partial differential equations governing the flow, temperature and concentration field of the problem are reduced to ordinary differential equations by using similarity transformations. The momentum, energy and concentration equations are solved numerically using shooting method along with fourth order Runge-kutta iteration scheme. The effects of various parameters viz. viscosity, thermal conductivity and mass transfer parameters on velocity, temperature and concentration field are presented graphically. Finally, the numerical values of skin-friction co-efficient, Nusselt number and sheerwood number are also calculated. Keywordsviscosity, Thermal conductivity, Dissipation and Mass transfer.

Chemical And Soret Effect On MHD Free Convective Flow Past an Accelerated Vertical Plate in Presence of Inclined Magnetic Field Through Porous Medium

Chemical And Soret Effect On MHD Free Convective Flow Past an Accelerated Vertical Plate in Presence of Inclined Magnetic Field Through Porous Medium

Unsteady MHD Free Convective Flow Past a Moving Vertical Plate with Time Dependent Suction and Chemical Reaction in a Slip Flow Regime

The objective of the present paper is to investigate chemical reaction effect on unsteady hydromagnetic free convection flow of a viscous, incompressible, electrically conducting fluid with heat and mass transfer past a moving porous vertical plate of infinite length with time dependent suction in the presence of heat source in a slip flow regime. Slip flow conditions for the velocity, jump in temperature and jump in concentration are taken into account in the boundary conditions. The governing equations involved in the present analysis are solved by perturbation technique. The velocity, temperature and concentration are studied for different parameters like Prandtl number, velocity ratio parameter, magnetic field parameter, chemical reaction parameter and slip parameter due to jump in concentration. It is inferred from the graphs that the temperature of the plate decreases with increasing the values of the Prandtl number. The concentration is decreased in the presence of chemical reaction and slip parameter due to jump in concentration.

Analytical Study on Unsteady MHD Free Convection and Mass Transfer Flow Past a Vertical Porous Plate

The unsteady MHD free convection and mass transfer boundary layer flow past a semi-infinite vertical porous plate immersed in a porous medium with heat source is studied. The plate moves with a uniform velocity in the direction of the fluid flow while the free stream velocity is considered to follow the exponentially increasing small perturbation law. The governing equations are solved analytical by using perturbation technique depending on the physical parameters including the Radiation parameter (R), the Magnetic parameter (M), the Prandtl number (Pr), the Grashof number for heat transfer (Gr), the Modified Grashof number for mass transfer (Gc), the Schmidt number (Sc), the soret number (S0), the permeability parameter (K) and the heat source (Q). The influence of these parameters on velocity field, temperature field, concentration field, skin friction, Nusselt number and Sherwood number at the plate are discussed with graphically.

Effects of Thermal Diffusion and Viscous Dissipation on Unsteady MHD Free Convection Flow Past a Vertical Porous Plate Under Oscillatory Suction Velocity with Heat Sink

The thermal diffusion and viscous dissipation effects on an unsteady MHD free convection heat and mass transfer flow of an incompressible, electrically conducting, fluid past an infinite vertical porous plate embedded in a porous medium of time dependent permeability under oscillatory suction velocity in the presence of a heat absorbing sink have been studied. It is considered that the influence of a uniform magnetic field acts normal to the flow and the permeability of the porous medium fluctuates with time. The dimensionless governing equations for this investigation have been solved numerically by using the efficient Galerkin finite element method. The numerical results obtained have been presented through graphs and tables for the thermal Grashof number (Gr > 0) corresponding to the cooling of the porous plate and (Gr < 0) corresponding to heating of the porous plate to observe the effects of various material parameters encountered in the problem under investigation. Numerical data for skin-friction, Nusselt and Sherwood numbers are tabulated and then discussed.