Browsing by Author "Agunbiade, S.A."
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Item Diffusion-thermo and thermal-diffusion effects on Rivlin-Ericksen rotatory convective flow past a porous vertical plate(Frontiers in Heat and Mass Transfer, 2018) Dada, M.S.; Agunbiade, S.A.; Titiloye, E.O.Diffusion-thermo and thermal-diffusion effects on unsteady, incompressible Rivlin-Ericksen rotatory convective flow of a magnetic conducting electrical fluid with time dependent suction between two vertical plates of which one is permeable are investigated. The uniform angular velocity rotates about an axis normal to the plate. The equations governing the flow model are non-dimensionalised, perturbed for simplification and solved by Adomian decomposition method. Graphical illustrations of the fluid parameters on velocity, temperature, concentration are presented and discussed. The effect of skin-friction, Nusselt and Sherwood numbers are presented in tabular forms and it is discovered from the results that a rise in thermal-diffusion parameter speedup the skin-friction, while increasing diffusion-thermo parameter slowdown the skin-friction.Item Effects of viscous dissipation on convective rotatory chemically reacting Rivlin–Ericksen flow past a porous vertical plate(Journal of Taibah University for Science, 2019) Agunbiade, S.A.; Dada, M.S.Viscous dissipation effects on an unsteady convective rotatory Rivlin–Ericksen flow of an incompressible electrically conducting fluid under time-dependence suction is considered. The entire system rotates through the angular velocity by the axis perpendicular to the plate. The governing equations comprising of continuity, momentum, energy and concentration equations were non-dimensionalized and reduced to ordinary differential equations using perturbation technique. The resultant coupled ordinary differential equations were solved using the Adomian decomposition method. The effects of various fluid parameters on velocity, temperature and concentration were presented in tabular and graphical forms. The results revealed that resultant fluid velocity is enhanced with an increase in rotation, viscoelastic and viscous dissipation parameter while an increase in chemical reaction retards both velocity and concentration distributions of the fluid.Item Heat and mass transfer effects on free convective couette dissipating fluid flow through a porous medium with slip conditions(Development Journal of Science and Technology Research, Faculty of Applied Sciences and Technology, Ibrahim Badamasi Babangida University, Laipai., 2016) Dada, M.S.; Agunbiade, S.A.; Jimoh, A.In this work, the effect of heat and mass transfer on unsteady free convective couette dissipating fluid flow with slip condition in presence of variables suction and radiative heat source are investigated. The governing equation of the model namely; continuity, momentum, energy and concentration equation are non-dimensionlised and solved using perturbation techniques. The numerical results are presented graphically and effects of material parameters have been discussed.Item An investigation of magnetohydrodynamic Maxwell fluid flow on accelerating porous surface using Spectral Homotopy Analysis Method(Journal of Science, Technology, Mathematics and Education (JOSTMED), Federal University of Technology, Minna., 2019) Dada, M.S.; Onwubuoya, C.; Agunbiade, S.A.; Disu, A.B.This paper investigates the viscous dissipation Magnetohydrodynamic (MHD) convective flow of Maxwell fluid along a porous accelerating surface in the presence of radiation, buoyancy and heat generation. The Rosseland approximation for optically thick fluid is considered. The physical model is governed by highly nonlinear equations which were transformed using similarity variables and solution technique adopted is Spectral Homotopy Analysis Method (SHAM) which is carried out up to 5^th order of approximation. The influence of pertinent flow parameters on the velocity and temperature are presented both in tabular and graphical forms. A hike in the Eckert number gives a fall in both the velocity and temperature profiles. It is observed that a rise in the Deborah number accelerates the velocity profile but decreases the temperature profile while the magnetic field parameter produces an opposition to the flow. It is found that increasing the radiation parameter produces a significant increase in the thermal condition of the fluid temperature. The numerical results are in better agreement with the existing ones in literature.Item Radiation and chemical reaction effects on convective Rivlin-Ericksen flow past a porous vertical plate(Ife journal of science, Obafemi Awolowo University Ile Ife., 2016) Dada, M.S.; Agunbiade, S.A.In this study, the influences of radiation and chemical reaction on unsteady, two-dimensional, laminar, boundary-layer free convective Rivlin-Ericksen flow of incompressible and electrically conducting fluids past a porous vertical plate with a periodic suction are discussed. The dimensionless governing equations of the flow field comprising of continuity, momentum, energy and species equations are solved analytically using two-term harmonic and non-harmonic functions. The effects of various parameters on velocity, temperature and concentration fields are presented graphically and discussed. It is detected that velocity and temperature decreases with increase in radiation parameter.