Browsing by Author "Idowu, A.S."

Now showing 1 - 5 of 5
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    DTM-Pade solution for heat transfer of hydromagnetic flow over a vertical plate
    (Journal of Nigerian Association of Mathematical Physics, Nigerian Association of Mathematical Physics., 2016) Idowu, A.S.; Dada, M.S.; Babalola, O.T.; Yusuf, T.A.; Are, E.B.
    This study deals with heat transfer of hydromagnetic flow over a vertical plate. The similarity solution is used to transform the system of partial Differential equations to ordinary non-linear Differential equations. The non-linear equations of the flow field had been solved using Differential transformation method empowered by Pade approximants which compared well with the fourth order Runge-Kutta method. The results are presented graphically and discussed. It is found that power index, variable magnetic field, prandtl and other quantities of physical interest significantly influenced the velocity and temperature profile.
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    MHD free convective heat and mass transfer flow of dissipative Casson fluid with variable viscosity and thermal conductivity effects
    (Journal of Taibah University for Science, 2020-06-22) Idowu, A.S.; Akolade, M.T.; Abubakar, Jos U.; Falodun, B.O.
    In this paper, the Cattaneo–Christov heat flux relocation paradox on Casson fluid with MHD and dissipative effects was considered. The buoyancy and heat generation effects were believed to be responsible for the natural convection, while variable properties were perceived as temperature-dependent linear function. Under the given assumptions, the governing system of equations was formulated and transformed. Hence, the Chebyshev collocation spectral approach was therefore employed to achieve an approximate solution. However, the behaviour of temperature-dependent variability establishes the relationship between the boundary layer flow of plastic dynamic viscosity and the Casson fluid. Furthermore, it was observed that a corresponding increase in the stretching index (n) increases the skin friction and decreases the energy and mass gradient accordingly. The relocation phenomenon contributes to a decrease in the thermal process, while the temperature gradient attained maximum within (0.4 − 0.6) variation of the Casson parameter.
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    Nonlinear convection flow of dissipative Casson nanofluid through an inclined annular microchannel with a porous medium
    (Heat Transfer, 2020) Idowu, A.S.; Akolade, M.T.; Oyekunle, T.L.; Abubakar, Jos U.
    The nonlinear convection study on the flow of a dissipative Casson nanofluid through a porous medium of an inclined micro‐annular channel is presented. The cylindrical surfaces were conditioned to temperature increase and velocity slip effects. A uniform magnetic field strength was applied perpendicular to the cylinder surface. The heat source and Darcy number influence are explored in the examination of the blood rheological model (Casson) through the annular cylinder. Appropriate dimensionless variables are imposed on the dimensional equations encompassing Casson nanofluid rheology through an annular microchannel. The resulting systems of equations were solved and computed numerically via Chebyshev‐based collocation approach. Thus, the solutions of flow distributions, volumetric flow rate, and other flow characteristics were obtained. The result shows that both nonlinear convection parameters decrease the nanoparticle volume fraction, whereas they increase the energy and momentum distributions. Moreover, the volumetric flow rate is upsurged significantly by a wider porous medium, annular gap, a higher Casson parameter, and nonlinear convection influence.
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    Numerical study of unsteady free convective heat transfer in Walters-B viscoelastic flow over an inclined stretching sheet with heat source and magnetic field
    (The Pacific Journal of Science and Technology, 2015) Jimoh, A.; Dada, M.S.; Idowu, A.S.
    An investigation was carried out on the numerical study of unsteady free convective heat transfer in Walters-B viscoelastic flow over an inclined stretching sheet with heat source and magnetic field. The dimensionless governing equations are solved using an implicit finite difference method of Crank-Nicolson type. The effects of various parameters on the velocity and temperature fields as well as the coefficient of skin-friction and Nusselt number were presented graphically and in tabulated forms. It is observed that, when the heat source parameter increases, the velocity and temperature increase in the boundary layer.
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    On the response of plate on winkler foundation to a moving distributed line load
    (ABACUS, Mathematical Association of Nigeria., 2004) Dada, M.S.; Idowu, A.S.; Titiloye, E.O.
    The dynamics response of a plate on winkler foundation subjected to a moving distributed line load is presented. The assumption of variable separation mode shapes method transforms the partial differential equation governing the motion of the plate, which in general is a function of x,y and t, into a function of one independent variable, The resulting equation is analyzed by a finite difference method. The results for simply supported boundary conditions are used as illustrative example. It is found that distributed moving mass problem produces the upper bound deflection, when compared with a concentrated moving mass problem.