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    Wyświetlanie 1-7 z 7
    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
    Tytuł:
    Radiation and chemical reaction effects on unsteady MHD free convection parabolic flow past an infinite isothermal vertical plate with viscous dissipation
    Autorzy:
    Reddy, B. Prabhakar
    Powiązania:
    https://bibliotekanauki.pl/articles/265160.pdf
    Data publikacji:
    2019
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    promieniowanie
    reakcja chemiczna
    magnetohydrodynamika
    swobodna konwekcja
    płyta pionowa
    radiation parameter
    chemical reaction parameter
    porous medium
    MHD
    free convection
    isothermal vertical plate
    Opis:
    The numerical investigation of the effects of radiation and chemical reaction on an unsteady MHD free convection flow with a parabolic starting motion of an infinite isothermal vertical porous plate taking into account the viscous dissipation effect has been carried out. The fluid is considered a gray, absorbing emitting radiation but a non-scattering medium. The dimensionless governing equations for this investigation are solved numerically by applying the Ritz finite element method. Numerical results for the velocity profiles, temperature profiles and concentration profiles as well as the skin-friction are presented through graphs and tables for different values of the physical parameters involved. Results obtained show a decrease in the temperature and velocity in the boundary layer as the radiation parameter increased. The velocity increases with an increase in the thermal and mass Grashof numbers and decreases with an increase in the magnetic parameter. Further, the concentration and velocity decreases with increasing the Schmidt number and chemical reaction parameter. These findings are in very good agreement with the studies reported earlier.
    Źródło:
    International Journal of Applied Mechanics and Engineering; 2019, 24, 2; 343-358
    1734-4492
    2353-9003
    Pojawia się w:
    International Journal of Applied Mechanics and Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Similarity solution for MHD nanofluid flow with heat generation in the presence of radiation and chemical reaction effects
    Autorzy:
    Palani, G.
    Arutchelvi, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/45423976.pdf
    Data publikacji:
    2023
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    konwekcja swobodna
    nanociecz
    lepkość
    free convection
    nanofluid
    viscous dissipation
    moving inclined plate
    Opis:
    An analysis has been carried out to study the two-dimensional free convective boundary layer MHD nanofluid flow past an inclined plate with heat generation, chemical reaction and radiation effects under convective boundary conditions. The partial differential equations describing the flow are coupled nonlinear. They have been reduced to nonlinear ordinary differential equations by utilizing a similarity transformation, which is then solved numerically with the aid of the Runge-Kutta-based shooting technique. Graphs depict the influence of different controlling factors on the velocity, temperature, and concentration profiles. Numerical findings for skin friction, Nusselt number and Sherwood number are reviewed for distinct physical parameter values. In a limited sense, there is a good correlation between the current study's results and those of the earlier published work.
    Źródło:
    International Journal of Applied Mechanics and Engineering; 2023, 28, 1; 71-83
    1734-4492
    2353-9003
    Pojawia się w:
    International Journal of Applied Mechanics and Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Unsteady MHD thermal diffusive and radiative fluid flow past a vertical porous plate with chemical reaction in slip flow regime
    Autorzy:
    Ravi Kumar, D.
    Jayarami Reddy, K.
    Raju, M. C.
    Powiązania:
    https://bibliotekanauki.pl/articles/265452.pdf
    Data publikacji:
    2019
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    swobodna konwekcja
    magnetohydrodynamika
    przenoszenie ciepła
    dyfuzja termiczna
    promieniowanie
    reakcja chemiczna
    poślizg
    MHD
    free convection
    heat and mass transfer
    slip flow regime
    thermal diffusion
    radiation
    chemical reaction
    Opis:
    An analytical solution of an MHD free convective thermal diffusive flow of a viscous, incompressible, electrically conducting and heat-absorbing fluid past a infinite vertical permeable porous plate in the presence of radiation and chemical reaction is presented. The flow is considered under the influence of a magnetic field applied normal to the flow. The plate is assumed to move with a constant velocity in the direction of fluid flow in slip flow regime, while free stream velocity is assumed to follow the exponentially increasing small perturbation law. The velocity, temperature, concentration, skin friction, Nusselt number and Sherwood number distributions are derived and have shown through graphs and tables by using the simple perturbation technique.
    Źródło:
    International Journal of Applied Mechanics and Engineering; 2019, 24, 1; 117-129
    1734-4492
    2353-9003
    Pojawia się w:
    International Journal of Applied Mechanics and Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    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
      Wyświetlanie 1-7 z 7

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