Browsing by Author "Felician, Alijen"

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    Effects of soret-dufour and conjugate heating on mixed convective heat absorbing hydro-magnetic casson fluid from flat semi-infinite vertical porous plate with suction/blowing
    (The University of Dodoma, 2023) Felician, Alijen
    This work aims to afford the numerical analysis of Soret-Dufour and inclined magnetic field effects on conjugate heat and mass transfer of unsteady heat absorbing hydro- magnetic Casson flow across a flat semi-infinite oscillatory plate in a porous medium with chemically reaction, thermal radiation, and suction/blowing. The momentum of the oscillatory plate is treated as the linear combination of the ’sine’ and ’cosine’ functions of time. The dimensionless coupled flow guiding nonlinear PDEs of the physical model is tackled numerically by the dynamic Galerkin finite element scheme. The demeanor of the profiles of velocity, concentration and temperature due to the alterations in the flow regulating parameters are examined graphically whereas the skin friction, mass transfer and heat transfer rates are explicated by the tabular data. The research discovered that radiation, conjugate heat transfer and diffusion thermo effects build up the temperature and velocity distributions whereas heat absorption has a reverse effect. Likewise, conju- gate mass transfer and thermo-diffusion effects intensify the concentration and velocity distributions whereas chemical reactions show overturn aspects. An increased radiation absorption parameter, magnetic field inclination angle and porosity of the medium stimu- late fluid velocity whereas the Casson and magnetic parameters have the opposite impact. In the case of suction, the profiles of concentration, velocity and temperature displayed a downturn nature but for the case of blowing, it was noticed a reversal trend. Further, a comparative analysis between the current findings and existing research works in the literature demonstrates that the obtained results are exact and accurate.
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    Finite element simulation of Soret-Dufour and conjugate heating effects on mixed convective heat absorbing hydromagnetic Casson fluid flow with suction/blowing from flat semi-infinite vertical porous plate
    (Elsevier BV, 2024) Reddy, B. Prabhakar; Felician, Alijen; Matao, P.M.
    The finite element simulations of the Soret-Dufour and angled magnetic field effects on conjugate heat and mass transportation of unsteady heat absorbing hydromagnetic Casson flow across a semi-infinite flat oscillatory plate engrafted in a porous medium with suction/blowing, radiation and chemical reaction is performed. The dimensionless coupled flow guiding nonlinear PDEs of the physical structure is handled numerically by the dynamic Galerkin finite element scheme. The demeanor of the velocity, concentration and the temperature profiles due to the alterations in the regulating flow parameters are examined graphically whereas the wall-friction, mass and heat transfer rates explicated by utilizing the tabular data. The research discovered that radiation; conjugate heat transfer and diffusion thermo effects heighten the temperature and velocity distributions whereas heat absorption has a reverse effect. Likewise, conjugate mass transfer and thermo-diffusion effects intensify the concentration and velocity distributions whereas the chemical reaction display overturns aspect. Increased radiation absorption, inclined magnetic field and porosity parameter stimulate fluid velocity whereas the Casson and magnetic parameters exhibit the converse impact. In the instance of suction, the profiles of concentration, velocity and temperature displayed a downturn nature but for the case of blowing, it was noticed a reversal trend. Further, a comparative analysis between the current findings and existing research works in the literature demonstrates our results are exact and accurate.