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    Wyświetlanie 1-6 z 6
    Tytuł:
    Effect of chemical reaction on mixed convective nanofluid flow on a vertical plate with uniform heat and mass fluxes
    Autorzy:
    Mondal, H.
    Goqo, S. P.
    Sibanda, P.
    De, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/265652.pdf
    Data publikacji:
    2019
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    przepływ konwekcyjny
    nanopłyny
    reakcja chemiczna
    free convective flow
    nanofluids
    chemical reaction
    Opis:
    The purpose of this paper is to consider a two dimensional free convective flow of a nanofluid due to the combined effects of thermal and mass diffusion in the presence of a chemical reaction of first order. The objective of the present investigation is to analyze the free convective flow in the presence of prescribed wall heat flux and mass flux condition. The governing equations of the linear momentum, energy equation and concentration are obtained in a dimensionless form by introducing a suitable group of similarity transformations. The transformed coupled non-linear ordinary differential equations are solved numerically by using appropriate boundary conditions for the various values of physical parameters. Computations are performed for a wide range of values of the various governing flow parameters of the velocity, temperature and species concentration profiles and results are presented graphically. Numerical results for the skin friction coefficient and local Nusselt number are also presented and analyzed in detail. The obtained results are compared with previously published work and are found to be in excellent agreement. The results are a very useful source of information for researchers on the subject of a free convective flow of a nanofluid. This paper illustrates chemical reaction effects on free convective flow of a nanofluid from a vertical plate with uniform heat and mass fluxes.
    Źródło:
    International Journal of Applied Mechanics and Engineering; 2019, 24, 2; 329-342
    1734-4492
    2353-9003
    Pojawia się w:
    International Journal of Applied Mechanics and Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Hydromagnetic rarefied fluid flow over a wedge in the presence of surface slip and thermal radiation
    Autorzy:
    Das, K.
    Sharma, R. P.
    Duari, P. R.
    Powiązania:
    https://bibliotekanauki.pl/articles/264410.pdf
    Data publikacji:
    2017
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    convective flow
    heat transfer
    surface slip
    magnetic field
    thermal radiation
    przepływ konwekcyjny
    przenoszenie ciepła
    pole magnetyczne
    promieniowanie cieplne
    Opis:
    An analysis is presented to investigate the effects of thermal radiation on a convective slip flow of an electrically conducting slightly rarefied fluid, having temperature dependent fluid properties, over a wedge with a thermal jump at the surface of the boundary in the presence of a transverse magnetic field. The reduced equations are solved numerically using the finite difference code that implements the 3-stage Lobatto IIIa formula for the partitioned Runge-Kutta method. Numerical results for the dimensionless velocity and temperature as well as for the skin friction coefficient and the Nusselt number are presented through graphs and tables for pertinent parameters to show interesting aspects of the solution.
    Źródło:
    International Journal of Applied Mechanics and Engineering; 2017, 22, 4; 827-837
    1734-4492
    2353-9003
    Pojawia się w:
    International Journal of Applied Mechanics and Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Dual solutions for boundary layer flow of moving fluid over a moving surface with power-law surface temperature
    Autorzy:
    Mukhopadhyay, S.
    Gorla, R. S. R.
    Powiązania:
    https://bibliotekanauki.pl/articles/265215.pdf
    Data publikacji:
    2013
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    przepływ konwekcyjny
    przepływ płynu
    temperatura powierzchni
    forced convective flow
    moving fluid
    flat surface
    power-law surface temperature
    dual solutions
    Opis:
    An analysis of heat transfer for boundary layer forced convective flow past a moving flat surface parallel to a moving stream is presented. The power-law surface temperature at the boundary is prescribed. The surface temperature varying directly (or inversely) with power-law exponent is considered. The similarity solutions for the problem are obtained and the reduced ordinary differential equations are solved numerically. To support the validity of the numerical results, a comparison is made with known results from the open literature for some particular cases of the present study. When the surface and the fluid move in the opposite directions, dual solutions exist.
    Źródło:
    International Journal of Applied Mechanics and Engineering; 2013, 18, 1; 113-124
    1734-4492
    2353-9003
    Pojawia się w:
    International Journal of Applied Mechanics and Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Axisymmetric mixed convective MHD flow over a slender cylinder in the presence of chemically reaction
    Autorzy:
    Prasad, K. V.
    Vaidya, H.
    Vajravelu, K.
    Datti, P. S.
    Umesh, V.
    Powiązania:
    https://bibliotekanauki.pl/articles/264807.pdf
    Data publikacji:
    2016
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    pole magnetyczne
    reakcja chemiczna
    przepływ konwekcyjny
    metoda Keller-box
    Keller-box method
    Grashof number
    slender cylinder
    convective flow
    magnetic field
    chemical reaction
    heat and mass transfer
    Opis:
    The present analysis is focused on the study of the magnetic effect on coupled heat and mass transfer by mixed convection boundary layer flow over a slender cylinder in the presence of a chemical reaction. The buoyancy effect due to thermal diffusion and species diffusion is investigated. Employing suitable similarity transformations, the governing equations are transformed into a system of coupled non-linear ordinary differential equations and are solved numerically via the implicit, iterative, second order finite difference method. The numerical results obtained are compared with the available results in the literature for some special cases and the results are found to be in excellent agreement. The velocity, temperature, and the concentration profiles are presented graphically and analyzed for several sets of the pertinent parameters. The pooled effect of the thermal and mass Grashof number is to enhance the velocity and is quite the opposite for temperature and the concentration fields.
    Źródło:
    International Journal of Applied Mechanics and Engineering; 2016, 21, 1; 121-141
    1734-4492
    2353-9003
    Pojawia się w:
    International Journal of Applied Mechanics and Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Oscillatory MHD convective flow of second order fluid through porous medium in a vertical rotating channel in slip-flow regime with heat radiation
    Autorzy:
    Garg, B. P.
    Singh, K. D.
    Bansal, A. K.
    Powiązania:
    https://bibliotekanauki.pl/articles/264392.pdf
    Data publikacji:
    2015
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    slip flow
    convective
    porous medium
    rotating
    oscillatory
    radiation
    second order fluid
    porowatość
    promieniowanie
    magnetohydrodynamika
    Opis:
    An analysis of an oscillatory magnetohydrodynamic (MHD) convective flow of a second order (viscoelastic), incompressible, and electrically conducting fluid through a porous medium bounded by two infinite vertical parallel porous plates is presented. The two porous plates with slip-flow condition and the no-slip condition are subjected respectively to a constant injection and suction velocity. The pressure gradient in the channel varies periodically with time. A magnetic field of uniform strength is applied in the direction perpendicular to the planes of the plates. The induced magnetic field is neglected due to the assumption of a small magnetic Reynolds number. The temperature of the plate with no-slip condition is non-uniform and oscillates periodically with time and the temperature difference of the two plates is assumed high enough to induce heat radiation. The entire system rotates in unison about the axis perpendicular to the planes of the plates. Adopting complex variable notations, a closed form solution of the problem is obtained. The analytical results are evaluated numerically and then presented graphically to discuss in detail the effects of different parameters of the problem. The velocity, temperature and the skin-friction in terms of its amplitude and phase angle have been shown graphically to observe the effects of the viscoelastic parameter γ, rotation parameter Ω, suction parameter […], Grashof number Gr, Hartmann number M, the pressure A, Prandtl number Pr, radiation parameter N and the frequency of oscillation […].
    Źródło:
    International Journal of Applied Mechanics and Engineering; 2015, 20, 1; 33-52
    1734-4492
    2353-9003
    Pojawia się w:
    International Journal of Applied Mechanics and Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Mixed convection in the stagnation-point flow over a vertical stretching sheet in the presence of thermal radiation
    Autorzy:
    Manjunatha, S.
    Gireesha, B. J.
    Bagewadi, C. S.
    Powiązania:
    https://bibliotekanauki.pl/articles/265508.pdf
    Data publikacji:
    2015
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    boundary layer flow
    stretching porous surface
    mixed convective parameter
    thermal radiation
    numerical solution
    dusty fluid
    free stream velocity
    przepływ warstwowy
    powierzchnia porowata
    promieniowanie cieplne
    Opis:
    An unsteady two-dimensional stagnation-point mixed convection flow of a viscous, incompressible dusty fluid towards a vertical stretching sheet has been examined. The stretching velocity and the free stream velocity are assumed to vary linearly with the distance from the stagnation point. The problem is analyzed using similarity solutions. The similarity ordinary differential equations were then solved numerical by using the RKF-45 method. The effects of various physical parameters on the velocity profile and skin-friction coefficient are also discussed in this paper. Some important findings reported in this work reveal that the effect of radiation has a significant impact on controlling the rate of heat transfer in the boundary layer region.
    Źródło:
    International Journal of Applied Mechanics and Engineering; 2015, 20, 4; 871-888
    1734-4492
    2353-9003
    Pojawia się w:
    International Journal of Applied Mechanics and Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-6 z 6

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