Effect of Nonlinear Radiative Heat and Mass Transfer on MHD Flow Over a Stretching Surface With Variable Conductivity and Viscosity

Okedoye, A.M.; Salawu, S.O.

doi:10.24874/jsscm.2019.13.02.07

Cited by 11 publications

(6 citation statements)

References 16 publications

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“…To obtain solution to the dimensionless Eqs (2.11) -(2.13), a perturbation method in series expansion is adopted with the limit  for the reliant variables. It is necessary because ε is small; thus we write according to Okedoye and Salawu [31] ( , ) ( These equations are then analytically solved to get the momentum, concentration and heat field solution. Hence, Eqs (3.2) -(3.7) have the following solutions ( ) , Skin-Friction: From the momentum field, the skin-friction is studied which is given as   .…”

Section: Methods Of Solutionmentioning

confidence: 99%

Transient Heat and Mass Transfer of Hydromagnetic Effects on the Flow Past a Porous Medium with Movable Vertical Permeablesheet

Okedoye

Salawu

2020

International Journal of Applied Mechanics and Engineering

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An unsteady flow of heat and species transport through a porous medium in an infinite movable vertical permeable flat surface is considered. The hydromagnetic chemical reactive fluid flow is stimulated by the thermal and solutant convection, and propelled by the movement of the surface. The formulated nonlinear flow equations in time space are solved analytically by asymptotic expansions to obtain solutions for the flow momentum, energy and chemical concentration for various thermo-physical parameters. The existence of flow characteristic is defined with the assistance of the flow parameters. In the study, the impact of some pertinent flow terms is reported and discussed. The study revealed that the species boundary layer increases with a generative chemical reaction and decreases with a destructive chemical reaction. Also, arise in the generative species reaction term reduces the flow momentum for the cooling surface. The impact of other flow governing parameters is displayed graphically as well as the fluid wall friction, wall energy and species gradients. The results of this study are important in chemical thermal engineering for monitoring processes to avoid solution blow up.

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Section: Methods Of Solutionmentioning

confidence: 99%

Transient Heat and Mass Transfer of Hydromagnetic Effects on the Flow Past a Porous Medium with Movable Vertical Permeablesheet

Okedoye

Salawu

2020

International Journal of Applied Mechanics and Engineering

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“…Various scientists successively adapted the Crane–Sakiadis formulation to incorporate other fluid physical properties such as radiation, porosity, exponential sheet, magnetic field, heat flux, injection/suction, and so on. Illustrative studies in this area are given in References [5–12].…”

Section: Introductionmentioning

confidence: 99%

Computation of ferromagnetic/nonmagnetic nanofluid flow over a stretching cylinder with induction and curvature effects

et al. 2021

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Motivated by enrobing processes in manufacturing technology with intelligent coatings, this study analyses the flow of an electroconductive incompressible nanofluid with heat distribution in a boundary layer containing metallic nanoparticles or ferroparticles along an extending cylindrical body with magnetic induction effects. The quasilinear boundary conditions for the partial derivative formulations connecting to the far stream and cylinder wall are converted to ordinary nonlinear derivatives by applying appropriate similarity transformations. The emerging system of derivatives is solved by a stable, efficient spectral relaxation method (SRM). The SRM procedure is benchmarked with special limiting cases in the literature and found to corroborate exceptionally well with other studies in the literature. Here, water is taken as the base liquid containing homogenously suspended nonmagnetic (Nimonic 80a, silicon dioxide [SiO2]) or magnetic nanoparticles (ferric oxide [Fe3O4] and manganese franklinite [Mn–ZnFe2O4]). The influence of all key parameters on the velocity and temperature distributions is displayed in graphs and tables with extensive elucidation. The wall local drag force (skin friction) and local temperature gradient (Nusselt number) are also visualized graphically for various parameters. The rate of convergence of the SRM convergence is compared with that of the successive over‐relaxation method, and it is observed to converge faster. Larger magnetohydrodynamic body force parameter and inverse Prandtl magnetic number induce flow deceleration and enhance temperature. Flow acceleration is computed for SiO2 nonmagnetic nanoparticles, and good heat conduction augmentation is produced with magnetic nanoparticle Fe3O4.

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“…while velocity decrease with a rise in the species reaction and reaction order. In another paper, Okedoye and Salawu [14] conducted a theoretical investigation on the flow of nonlinear magnetohydrodynamic (MHD), laminar, viscous, incompressible boundary layer fluid with thermal radiative heat transfer and variable properties past a stretching plate was carried out when the liquid is taken to be gray, absorbing, emitting but with non-scattering medium. The results shows that the parameters which enhanced the heat source terms decreased the fluid viscosity and caused increase in the flow rate, on the other hand, parameter that reduced heat source terms encouraged viscosity which resulted in retardation of the fluid velocity.…”

Section: Introductionmentioning

confidence: 99%

Entropy generation in unsteady MHD convective flow past a flat porous oscillating plate with suction or injection

Panya¹,

Akinyemi²,

Okedoye³

2023

Global J. Eng. Technol. Adv.

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In this study, Entropy generation in MHD convective flow past a flat porous oscillating plate with suction or injection are presented for an unsteady, one-dimensional flow of a viscous incompressible fluid. The importance of Entropy generation is noticed in industrial and scientific fields including heat transfer in thermal systems which includes viscous dissipation, chemical reaction, mass transfer, heat transfer, and electrical conduction etc. The role of flow parameters like magnetic parameter, Radiation parameters, Grashof number, Heat generation/absorption, irreversibility distribution ratio on entropy generation are presented and elaborated through graphs. The obtained results reveal that for various values of Hartmann number, the entropy generation and Bejan number are increased, a larger radiation parameter increases the entropy generation and the Entropy generation due to viscous irreversibility decreases with the increase in Grashof number and Hartmann number.

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Effect of Nonlinear Radiative Heat and Mass Transfer on MHD Flow Over a Stretching Surface With Variable Conductivity and Viscosity

Cited by 11 publications

References 16 publications

Transient Heat and Mass Transfer of Hydromagnetic Effects on the Flow Past a Porous Medium with Movable Vertical Permeablesheet

Transient Heat and Mass Transfer of Hydromagnetic Effects on the Flow Past a Porous Medium with Movable Vertical Permeablesheet

Computation of ferromagnetic/nonmagnetic nanofluid flow over a stretching cylinder with induction and curvature effects

Entropy generation in unsteady MHD convective flow past a flat porous oscillating plate with suction or injection

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