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    Wyświetlanie 1-4 z 4
    Tytuł:
    A study of chemically reactive species and thermal radiation effects on an unsteady MHD free convection flow through a porous medium past a flat plate with ramped wall temperature
    Autorzy:
    Pandit, K. K.
    Sarma, D.
    Singh, S. I.
    Powiązania:
    https://bibliotekanauki.pl/articles/264711.pdf
    Data publikacji:
    2017
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    free convection
    chemical reaction
    thermal radiation
    MHD
    porous medium
    ramped temperature
    konwekcja swobodna
    reakcja chemiczna
    promieniowanie cieplne
    magnetohydrodynamika
    ośrodek porowaty
    Opis:
    An investigation of the effects of a chemical reaction and thermal radiation on unsteady MHD free convection heat and mass transfer flow of an electrically conducting, viscous, incompressible fluid past a vertical infinite flat plate embedded in a porous medium is carried out. The flow is induced by a general time-dependent movement of the vertical plate, and the cases of ramped temperature and isothermal plates are studied. An exact solution of the governing equations is obtained in closed form by the Laplace Transform technique. Some applications of practical interest for different types of plate motions are discussed. The numerical values of fluid velocity, temperature and species concentration are displayed graphically whereas the numerical values of skin friction, Nusselt number and Sherwood number are presented in a tabular form for various values of pertinent flow parameters for both ramped temperature and isothermal plates.
    Źródło:
    International Journal of Applied Mechanics and Engineering; 2017, 22, 4; 945-964
    1734-4492
    2353-9003
    Pojawia się w:
    International Journal of Applied Mechanics and Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The effect of MHD on free convection with periodic temperature and concentration in the presence of thermal radiation and chemical reaction
    Autorzy:
    Zigta, P.
    Koya, P. R.
    Powiązania:
    https://bibliotekanauki.pl/articles/265055.pdf
    Data publikacji:
    2017
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    MHD
    unsteady free convection
    thermal radiation
    chemical reaction
    Couette porous plates
    magnetohydrodynamika
    konwekcja swobodna
    promieniowanie cieplne
    reakcja chemiczna
    przepływ Couette'a
    Opis:
    This paper studies the effect of magneto hydrodynamics on unsteady free convection between a pair of infinite vertical Couette plates. The temperature of the plates and concentration between the plates vary with time. Convection between the plates is considered in the presence of thermal radiation and chemical reaction. The solution is obtained using perturbation techniques. These techniques are used to transform nonlinear coupled partial differential equations to a system of ordinary differential equations. The resulting equations are solved analytically. The solution is expressed in terms of power series with some small parameter. The effect of various parameters, viz., velocity, temperature and concentration, has been discussed. Mat lab code simulation study is carried out to support the theoretical results. The result shows that as the thermal radiation parameter R increases, the temperature decreases near the moving porous plate while it approaches to a zero in the region close to the boundary layer of the stationary plate. Moreover, as the modified Grashof number, i.e., based on concentration difference, increases, the velocity of the fluid flow increases hence the concentration decreases. An increase in both the chemical reaction parameter and Schmidt number results in decreased concentration.
    Źródło:
    International Journal of Applied Mechanics and Engineering; 2017, 22, 4; 1059-1073
    1734-4492
    2353-9003
    Pojawia się w:
    International Journal of Applied Mechanics and Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Heat transfer effects on free convection of viscous dissipative fluid flow over an inclined plate with thermal radiation in the presence of induced magnetic field
    Autorzy:
    Kumar, P. Pramod
    Malga, Bala Siddulu
    Appidi, Lakshmi
    Matta, Sweta
    Powiązania:
    https://bibliotekanauki.pl/articles/1839898.pdf
    Data publikacji:
    2021
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    promieniowanie cieplne
    pole magnetyczne
    konwekcja swobodna
    thermal radiation
    induced magnetic field
    magnetic Prandtl number
    free convection
    Galerkin finite element method
    viscous dissipation
    Opis:
    The principal objective of the present paper is to know the reaction of thermal radiation and the effects of magnetic fields on a viscous dissipative free convection fluid flow past an inclined infinite plate in the presence of an induced magnetic field. The Galerkin finite element technique is applied to solve the nonlinear coupled partial differential equations and effects of thermal radiation and other physical and flow parameters on velocity, induced magnetic field, along with temperature profiles are explained through graphs. It is noticed that as the thermal radiation increases velocity and temperature profiles decrease and the induced magnetic field profiles increases.
    Źródło:
    International Journal of Applied Mechanics and Engineering; 2021, 26, 1; 122-134
    1734-4492
    2353-9003
    Pojawia się w:
    International Journal of Applied Mechanics and Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    A numerical study of dissipative chemically reactive radiative MHD flow past a vertical cone with nonuniform mass flux
    Autorzy:
    Sambath, P.
    Sankar, D. S.
    Viswanathan, K. K.
    Powiązania:
    https://bibliotekanauki.pl/articles/265381.pdf
    Data publikacji:
    2020
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    swobodna konwekcja
    promieniowanie cieplne
    lepkość
    magnetohydrodynamika
    free convection
    finite difference
    vertical cone
    MHD
    thermal radiation
    viscous dissipation
    Opis:
    A computational model is presented to explore the properties of heat source, chemically reacting radiative, viscous dissipative MHD flow of an incompressible viscous fluid past an upright cone under inhomogeneous mass flux. A numerical study has been carried out to explore the mass flux features with the help of Crank-Nicolson finite difference scheme. This investigation reveals the influence of distinct significant parameters and the obtained outputs for the transient momentum, temperature and concentration distribution near the boundary layer is discussed and portrayed graphically for the active parameters such as the Schmidt number Sc, thermal radiation Rd, viscous dissipation parameter […], chemical reaction parameter […], MHD parameter M and heat generation parameter ]…]. The significant effect of parameters on shear stress, heat and mass transfer rates are also illustrated.
    Źródło:
    International Journal of Applied Mechanics and Engineering; 2020, 25, 1; 159-176
    1734-4492
    2353-9003
    Pojawia się w:
    International Journal of Applied Mechanics and Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-4 z 4

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