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    Wyświetlanie 1-11 z 11
    Tytuł:
    Magnetohydrodynamic flow around an elongated cylinder in non-Darcian porous regime with higher order chemical reaction and Soret/Dufour effects
    Autorzy:
    Das, Utpal Jyoti
    Begum, Jubi
    Powiązania:
    https://bibliotekanauki.pl/articles/27312395.pdf
    Data publikacji:
    2023
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    parametr bezwładności
    magnetohydrodynamika
    zjawisko Dufoura
    efekt Soreta
    ośrodek porowaty
    inertia parameter
    magnetohydrodynamic
    Soret number
    Dufour number
    porous medium
    elongating cylinder
    bvp4c
    Opis:
    Here, we consider magnetohydrodynamic flow of an incompressible, time independent fluid past an elongated cylinder surrounded in a non-Darcian porous regime with magnetic flux supplied at an acute angle. The Soret/Dufour effects and the higher order chemical reactions are also included in the present study. The subsequent governing equations are resolved using the MATLAB-bvp4c method. The flow velocity appears to decrease with the growth of the Reynolds number, inertia parameter, magnetic field and angle of inclination of the magnetic flux, but improves with the Darcy number. The inertia parameter enhances the fluid temperature and skin friction. Further order of chemical reaction, Soret/ Dufour number plays a significant role in the system.
    Źródło:
    International Journal of Applied Mechanics and Engineering; 2023, 28, 1; 11--22
    1734-4492
    2353-9003
    Pojawia się w:
    International Journal of Applied Mechanics and Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Magneto-hydro dynamic flow and heat transfer of non-Newtonian power-law fluid over a non-linear stretching surface with viscous dissipation
    Autorzy:
    Kishan, N.
    Kavitha, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/955131.pdf
    Data publikacji:
    2014
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    wymiana ciepła
    ciecz lepkosprężysta
    płyn nienewtonowski
    magnetohydrodynamic flow
    power-law fluid
    stretching sheet
    heat source/sink parameter
    viscous dissipation
    Opis:
    A fluid flow and heat transfer analysis of an electrically conducting non-Newtonian power law fluid flowing over a non-linear stretching surface in the presence of a transverse magnetic field taking into consideration viscous dissipation effects is investigated. The stretching velocity, the temperature and the transverse magnetic field are assumed to vary in a power-law with the distance from the origin. The flow is induced due to an infinite elastic sheet which is stretched in its own plane. The governing equations are reduced to non-linear ordinary differential equations by means of similarity transformations. By using quasi-linearization techniques first linearize the non linear momentum equation is linearized and then the coupled ordinary differential equations are solved numerically by an implicit finite difference scheme. The numerical solution is found to be dependent on several governing parameters, including the magnetic field parameter, power-law index, Eckert number, velocity exponent parameter, temperature exponent parameter, modified Prandtl number and heat source/sink parameter. A systematic study is carried out to illustrate the effects of these parameters on the fluid velocity and the temperature distribution in the boundary layer. The results for the local skin-friction coefficient and the local Nusselt number are tabulated and discussed.
    Źródło:
    International Journal of Applied Mechanics and Engineering; 2014, 19, 2; 259-273
    1734-4492
    2353-9003
    Pojawia się w:
    International Journal of Applied Mechanics and Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Thermal radiation and chemical reaction effects on unsteady magnetohydrodynamic third grade fluid flow between stationary and oscillating plates
    Autorzy:
    Idowu, A. S.
    Sani, U.
    Powiązania:
    https://bibliotekanauki.pl/articles/265001.pdf
    Data publikacji:
    2019
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    przepływ Couette'a
    przepływ magnetohydrodynamiczny
    promieniowanie cieplne
    reakcja chemiczna
    third grade fluid
    plane Couette
    Couette-Poiseuille flow
    magnetohydrodynamic flow
    stationary and oscillating plate
    thermal radiation
    chemical reaction
    Opis:
    An analysis was carried out for an unsteady magnetohydrodynamic (MHD) flow of a generalized third grade fluid between two parallel plates. The fluid flow is a result of the plate oscillating, moving and pressure gradient. Three flow problems were investigated, namely: Couette, Poiseuille and Couette-Poiseuille flows and a number of nonlinear partial differential equations were obtained which were solved using the He-Laplace method. Expressions for the velocity field, temperature and concentration fields were given for each case and finally, effects of physical parameters on the fluid motion, temperature and concentration were plotted and discussed. It is found that an increase in the thermal radiation parameter increases the temperature of the fluid and hence reduces the viscosity of the fluid while the concentration of the fluid reduces as the chemical reaction parameter increases.
    Źródło:
    International Journal of Applied Mechanics and Engineering; 2019, 24, 2; 269-293
    1734-4492
    2353-9003
    Pojawia się w:
    International Journal of Applied Mechanics and Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Electro-magnetohydrodynamic two fluid flow of ionized-gases with hall and rotation effects
    Autorzy:
    Linga Raju, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/2174161.pdf
    Data publikacji:
    2021
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    pole magnetyczne
    pole elektryczne
    plazma
    wymiana ciepła
    magnetic field
    electric field
    immiscible flow
    plasma
    Hall effect
    rotating frame
    heat transfer
    insulating plate
    Opis:
    An electro-magnetohydrodynamic (EMHD) two fluid flow and heat transfer of ionized gases through a horizontal channel surrounded by non-conducting plates in a rotating framework with Hall currents is investigated. The Hall effect is considered with an assumption that the gases are completely ionized and the strength of the applied transverse magnetic field is strong. The governing equations are solved analytically for the temperature and velocity distributions in two fluid flow regions. The numerical solutions are demonstrated graphically for various physical parameters such the Hartmann number, Hall parameter, rotation parameter, and so on. It was noticed that an increment is either due to the Hall parameter or the rotation parameter reduces the temperature in the two regions.
    Źródło:
    International Journal of Applied Mechanics and Engineering; 2021, 26, 4; 128--144
    1734-4492
    2353-9003
    Pojawia się w:
    International Journal of Applied Mechanics and Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Analysis of magnetohydrodynamic (MHD) nanofluid flow with heat and mass transfer over a porous stretching sheet
    Autorzy:
    Odesola, A. S.
    Abiala, I. O.
    Akinpelu, F. O.
    Fenuga, O. J.
    Powiązania:
    https://bibliotekanauki.pl/articles/1839771.pdf
    Data publikacji:
    2020
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    metoda elementów skończonych
    wymiana ciepła
    wymiana masy
    magnetohydrodynamika
    finite element method
    heat and mass transfer
    MHD
    nanofluid flow
    porous stretching sheet
    Opis:
    This work investigates a three-dimensional Magnetohydrodynamic (MHD) nanofluid flow with heat and mass transfer over a porous stretching sheet. Firstly, partial differential equations are transformed into coupled non-linear ordinary differential equations through a similarity variables transformation and solved by Galerkin Finite Element Methods (FEM). The effects of thermal radiation, viscous dissipation and chemical reaction on the fluid flow are considered. The behaviour and properties of pertinent flow parameters on the velocity, temperature and concentration profiles are presented and discussed graphically. The effects of the friction coefficient parameter, Nusselt and Sherhood numbers are also shown and considered using tables. The work is in good agreement in comparison with the recent work in literature.
    Źródło:
    International Journal of Applied Mechanics and Engineering; 2020, 25, 4; 162-174
    1734-4492
    2353-9003
    Pojawia się w:
    International Journal of Applied Mechanics and Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effect of convective heat and mass conditions in magnetohydrodynamic boundary layer flow with joule heating and thermal radiation
    Autorzy:
    Sharma, R. P.
    Tinker, Seema
    Gireesha, B. J.
    Nagaraja, B.
    Powiązania:
    https://bibliotekanauki.pl/articles/1839793.pdf
    Data publikacji:
    2020
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    konwekcja
    magnetohydrodynamika
    reakcja chemiczna
    promieniowanie cieplne
    convection
    MHD
    Joule heating
    chemical reaction
    thermal radiation
    Opis:
    A free convection viscous MHD flow over a semi-infinite vertical sheet with convective heat and mass conditions has been considered. The effects of thermal radiation, chemical reaction and Joule heating on flow are also accounted. The governing nonlinear partial differential equations have been transformed into a set of highly non-linear coupled ordinary differential equations (ODEs) using appropriate similarity transformations. Numerical solutions of transformed equations are obtained by employing the 5th order Runge-Kutta Fehlberg technique followed by the shooting technique. The influences of different flow parameters on the momentum, energy and mass field are discussed and shown graphically. Results reveal that temperature and concentration profiles enhance due to increasing heat and mass Biot number parameters.
    Źródło:
    International Journal of Applied Mechanics and Engineering; 2020, 25, 3; 103-116
    1734-4492
    2353-9003
    Pojawia się w:
    International Journal of Applied Mechanics and Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effect of Hall currents on unsteady magnetohydrodynamic two-ionized fluid flow and heat transfer in a channel
    Autorzy:
    Raju, T. Linga
    Rao, V. Gowrisankara
    Powiązania:
    https://bibliotekanauki.pl/articles/1839879.pdf
    Data publikacji:
    2021
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    czujnik Halla
    wymiana ciepła
    magnetohydrodynamika
    Hall currents
    heat transfer
    magnetohydrodynamics
    multi-fluid model
    plasma flows
    Opis:
    An unsteady magnetohydrodynamic (MHD) heat transfer two-fluid flow of ionized gases through a horizontal channel between parallel non-conducting plates, by taking Hall currents into account is studied. The governing partial differential equations that describe the flow and heat transfer under the adopted conditions are solved for the velocity and temperature distributions by a regular perturbation technique. Profiles for the velocity and temperature distributions as well the rates of heat transfer coefficient are presented graphically, and a parametric study is performed. The results reveal that the combined effects of the Hartmann number, Hall parameter, and the ratios of viscosities, heights, electrical and thermal conductivities have a significant impact on an unsteady MHD heat transfer two-ionized fluid flow characteristics.
    Źródło:
    International Journal of Applied Mechanics and Engineering; 2021, 26, 2; 84-106
    1734-4492
    2353-9003
    Pojawia się w:
    International Journal of Applied Mechanics and Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Influence of thermal radiation on magnetohydrodynamic (MHD) boundary layer flow of a viscous fluid over an exponentially stretching sheet
    Autorzy:
    Idowu, A. S.
    Usman, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/266291.pdf
    Data publikacji:
    2016
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    warstwa graniczna
    przenikania ciepła
    promieniowanie
    magnetohydrodynamika
    boundary layer
    heat transfer
    MHD
    radiation
    stretching sheet
    Opis:
    Radiation on a magnetohydrodynamic (MHD) boundary layer flow of a viscous fluid over an exponentially stretching sheet was considered together with its effects. The new technique of homotopy analysis method (nHAM) was used to obtain the convergent series expressions for velocity and temperature, where the governig system of partial differential equations was transformed into ordinary differential equations. The interpretation of these expressions is shown physically through graphs. We observed that the effects of the Prandtl and magnetic number act in opposite to each other on the temperature.
    Źródło:
    International Journal of Applied Mechanics and Engineering; 2016, 21, 3; 581-592
    1734-4492
    2353-9003
    Pojawia się w:
    International Journal of Applied Mechanics and Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Entropy generation on MHD slip flow over a stretching cylinder with heat generation/absorption
    Autorzy:
    Jain, S.
    Bohra, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/264521.pdf
    Data publikacji:
    2018
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    magnetohydrodynamika
    wytwarzanie ciepła
    poślizg
    entropia
    magnetohydrodynamic
    heat generation
    slip
    entropy
    Opis:
    In the present study, we have investigated entropy generation on a magnetohydrodynamic fluid flow and heat transfer over a stretching cylinder with a porous medium in slip flow regime. A uniform heat source and radiation is also considered. Similarity transformation has been applied for making an ordinary differential equation from nonlinear governing partial differential equations. The numerical solution for the set of nonlinear ordinary differential equations has been obtained by using the fourth-order Runge-Kutta scheme together with the shooting method. The effects of pertinent parameters such as the magnetic field parameter, permeability parameter, slip parameter, Prandtl number and radiation parameter on the fluid velocity distribution, temperature distribution, entropy generation and Bejan number are discussed graphically.
    Źródło:
    International Journal of Applied Mechanics and Engineering; 2018, 23, 2; 413-428
    1734-4492
    2353-9003
    Pojawia się w:
    International Journal of Applied Mechanics and Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Exact solution of MHD mixed convection periodic flow in a rotating vertical channel with heat radiation
    Autorzy:
    Singh, K. D.
    Powiązania:
    https://bibliotekanauki.pl/articles/265295.pdf
    Data publikacji:
    2013
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    konwekcja mieszana
    magnetohydrodynamika
    promieniowanie cieplne
    periodic flow
    mixed convection
    magnetohydrodynamic (MHD)
    rotating system
    heat radiation
    Opis:
    Magnetohydrodynamic (MHD) mixed convection flow of a viscous, incompressible and electrically conducting fluid in a vertical channel is analyzed analytically. A magnetic field of uniform strength is applied perpendicular to the planes of the channel walls. The fluid is acted upon by a periodic variation of the pressure gradient in the vertically upward direction. The temperature of one of the plates is non-uniform and the temperature difference of the walls of the channel is high enough to induce heat transfer due to radiation. The fluid and the channel rotate in unison with an angular velocity about the axis normal to the plates of the channel. An exact analytical solution of the problem is obtained. Two cases of small and large rotation have been considered to assess the effects of different parameters involved in the flow problem. The velocity field, the amplitude and the phase angle of the shear stress are shown graphically and discussed in detail. During analysis it is found that the flow problem studied by Makinde and Mhone (2005) is incorrect physically and mathematically.
    Źródło:
    International Journal of Applied Mechanics and Engineering; 2013, 18, 3; 853-869
    1734-4492
    2353-9003
    Pojawia się w:
    International Journal of Applied Mechanics and Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Exact solutions for the incompressible electrically conducting viscous flow between two moving parallel disks in unsteady magneto hydrodynamic and stability analysis
    Autorzy:
    Balagondar, P. M.
    Kempe Gowda, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/264517.pdf
    Data publikacji:
    2013
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    lepkosprężystość
    hydromagnetyka
    analiza stabilności
    równanie różniczkowe
    viscous flows
    magnetohydrodynamic
    stability analysis
    Riabouchinsky flow
    Hermite’s differential equation
    Opis:
    The main interest of the present investigation is to generate exact solutions to the steady Navier-Stokes equations for the incompressible Newtonian viscous electrically conducting fluid flow motion and stability due to disks moving towards each other or in opposite directions with a constant velocity. Making use of the analytic solution, the description of possible conditions of motion is based on the exact solutions of the Navier-Stokes equations. Both stationary and transient cases have been considered. The stability of motion is analyzed for different initial perturbations. Different types of stability were found according to whether the disks moved towards or away from each other.
    Źródło:
    International Journal of Applied Mechanics and Engineering; 2013, 18, 2; 571-579
    1734-4492
    2353-9003
    Pojawia się w:
    International Journal of Applied Mechanics and Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-11 z 11

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