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    Wyświetlanie 1-5 z 5
    Tytuł:
    Soret and Dufour effects on MHD free convective flow past a vertical porous plate in the presence of heat generation
    Autorzy:
    Reddy, G. V. R.
    Powiązania:
    https://bibliotekanauki.pl/articles/264624.pdf
    Data publikacji:
    2016
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    promieniowanie
    wymiana ciepła
    wymiana masy
    tarcie
    radiation
    heat and mass transfer
    skin-friction
    Nusselt number
    Sherwood number
    Opis:
    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.
    Źródło:
    International Journal of Applied Mechanics and Engineering; 2016, 21, 3; 649-665
    1734-4492
    2353-9003
    Pojawia się w:
    International Journal of Applied Mechanics and Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Flow features of thermophoretic MHD viscous fluid flow past a converging channel with heat source and chemical reaction
    Autorzy:
    Kalita, B. K.
    Choudhury, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/2106445.pdf
    Data publikacji:
    2021
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    magnetohydrodynamika
    płyn lepki
    termoforeza
    liczba Nusselta
    MHD
    viscous fluid
    heat source
    thermophoresis
    Nusselt number
    skin friction
    Opis:
    A boundary layer flow of an electrically conducting viscous fluid past a converging channel in the presence of thermophoresis, heat source, chemical reaction, viscous dissipation and simultaneous heat and mass transfer characteristics is studied in the paper. An external magnetic field of uniform strength is applied transversely to the channel. The similarity solution has been used to transform the partial differential equations that represent the problem into a boundary value problem of coupled ordinary differential equations, which in turn are solved numerically using MATLAB’s built in solver bvp4c. Numerical computations are carried out to solve the problem and graphical illustrations are made to get the physical insight of the same. The convergent channel flow problem of an incompressible electrically conducting viscous fluid in the presence of a magnetic field has a wide range of applicability in different areas of engineering, specially in industrial metal casting and control of molten metal flow.
    Źródło:
    International Journal of Applied Mechanics and Engineering; 2021, 26, 3; 72--83
    1734-4492
    2353-9003
    Pojawia się w:
    International Journal of Applied Mechanics and Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    On diffusion of chemically reactive species in a convective flow past an inclined plate with variable surface temperature and variable mass diffusion
    Autorzy:
    Kirubavathi, J. D.
    Palani, G.
    Powiązania:
    https://bibliotekanauki.pl/articles/266086.pdf
    Data publikacji:
    2016
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    metoda różnic skończonych
    płyta pochylona
    tarcie
    chemically reactive species
    Nusselt number
    skin friction
    finite-difference methods
    inclined plate
    Opis:
    A numerical solution of a transient natural convection flow past a semi-infinite inclined plate under the combined buoyancy effects of heat and mass transfer along with chemical reaction is presented herewith. The governing boundary layer equations for the above flow problem for a first order homogeneous chemical reaction are set up and non-dimensionalised. An implicit finite difference method is employed to solve the unsteady, nonlinear, integro and coupled partial differential equation. Numerical results are presented for various parameters occurring in the problem. The unsteady velocity, temperature and concentration profiles, local and average skin friction, Nusselt number and Sherwood number are studied for both a generative and destructive reaction.
    Źródło:
    International Journal of Applied Mechanics and Engineering; 2016, 21, 4; 905-922
    1734-4492
    2353-9003
    Pojawia się w:
    International Journal of Applied Mechanics and Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Convective heat transfer in a micropolar fluid over an unsteady stretching surface
    Autorzy:
    Prasad, K. V.
    Vaidya, H.
    Vajravelu, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/266164.pdf
    Data publikacji:
    2016
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    przepływ niestacjonarny
    wymiana ciepła
    tarcie
    metoda Keller-box
    unsteady flow
    microrotation
    heat transfer
    skin friction
    Nusselt number
    Keller-box method
    Opis:
    An unsteady boundary layer free convective flow and heat transfer of a viscous incompressible, microploar fluid over a vertical stretching sheet is investigated. The stretching velocity is assumed to vary linearly with the distance along the sheet. Two equal and opposite forces are impulsively applied along the x-axis so that the sheet is stretched, keeping the origin fixed in the micropolar fluid. The transformed highly non-linear boundary layer equations are solved numerically by an implicit finite difference scheme for the transient, state from the initial to the final steady-state. To validate the numerical method, comparisons are made with the available results in the literature for some special cases and the results are found to be in good agreement. The obtained numerical results are analyzed graphically for the velocity, the microrotation, and the temperature distribution; whereas the skin friction, the couple stress coefficient and the Nusselt number are tabulated for different values of the pertinent parameters. Results exhibit a drag reduction and an increase in the surface heat transfer rate in the micropolar fluid flow compared to the Newtonian fluid flow.
    Źródło:
    International Journal of Applied Mechanics and Engineering; 2016, 21, 2; 407-422
    1734-4492
    2353-9003
    Pojawia się w:
    International Journal of Applied Mechanics and Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Similarity solution for combined free-forced convection past a vertical porous plate in a porous medium with a convective surface boundary condition
    Autorzy:
    Garg, P.
    Purohit, G. N.
    Chaudhary, R. C.
    Powiązania:
    https://bibliotekanauki.pl/articles/265568.pdf
    Data publikacji:
    2016
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    płyta porowata
    tarcie
    ośrodek porowaty
    konwekcja
    combined convection
    fixed vertical porous plate
    skin-friction coefficient
    Nusselt number
    convective surface boundary condition
    porous medium
    Opis:
    This paper studies the mathematical implications of the two dimensional viscous steady laminar combined free-forced convective flow of an incompressible fluid over a semi infinite fixed vertical porous plate embedded in a porous medium. It is assumed that the left surface of the plate is heated by convection from a hot fluid which is at a temperature higher than the temperature of the fluid on the right surface of the vertical plate. To achieve numerical consistency for the problem under consideration, the governing non linear partial differential equations are first transformed into a system of ordinary differential equations using a similarity variable and then solved numerically under conditions admitting similarity solutions. The effects of the physical parameters of both the incompressible fluid and the vertical plate on the dimensionless velocity and temperature profiles are studied and analysed and the results are depicted both graphically and in a tabular form. Finally, algebraic expressions and the numerical values are obtained for the local skin-friction coefficient and the local Nusselt number.
    Źródło:
    International Journal of Applied Mechanics and Engineering; 2016, 21, 4; 827-836
    1734-4492
    2353-9003
    Pojawia się w:
    International Journal of Applied Mechanics and Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-5 z 5

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