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    Wyświetlanie 1-6 z 6
    Tytuł:
    Influence of slip parameter, viscous dissipation and Joule heating effect on boundary layer flow and heat transfer over a power-law stretching wedge-shaped surface with the correlation coefficient and multiple regressions
    Autorzy:
    Ali, Mohammad
    Alim, Md. Abdul
    Powiązania:
    https://bibliotekanauki.pl/articles/2174185.pdf
    Data publikacji:
    2022
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    warstwa graniczna
    lepkość
    transfer ciepła
    boundary layer
    wedge angle
    stretching surface
    permeability
    slip condition
    Opis:
    The influence of slip parameter, viscous dissipation, and Joule heating parameter on MHD boundary layer nanofluid flow over a permeable wedge-shaped surface was analysed. The PDEs and the associated boundary conditions were transformed to a set of non-similar ODEs and the obtained system of equations was solved numerically with the help of the spectral quasi-linearization method (SQLM) by applying suitable software. This method helps to identify the accuracy and convergence of the present problem. The current numerical results were compared with previously published work and are found to be similar. The fluid velocity, fluid temperature, and nanoparticle concentration within the boundary layer region for various values of the parameters such as the slip effect, magnetic strength, Prandtl number, Lewis number, stretching ratio, viscous dissipation, suction, Brownian motion, Joule heating, heat generation, and thermophoresis are studied. It is observed that the Brownian motion, Joule heating, viscous dissipation, and thermophoresis lead to decreases in the heat and mass transfer rate. The skin friction coefficient enhances with slip, magnetic, permeability, and suction parameters, but reduces with the Brownian motion, wedge angle, and stretching ratio parameters whereas there is no effect of mixed convection, thermophoresis, heat generation parameters, the Prandtl and Eckert number.
    Źródło:
    International Journal of Applied Mechanics and Engineering; 2022, 27, 2; 1--21
    1734-4492
    2353-9003
    Pojawia się w:
    International Journal of Applied Mechanics and Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Heat and mass transfer in a second grade fluid over a stretching vertical surface in a porous medium
    Autorzy:
    Baoku, I. G.
    Onifade, Y. S.
    Adebayo, L. O.
    Yusuff, K. M.
    Powiązania:
    https://bibliotekanauki.pl/articles/265587.pdf
    Data publikacji:
    2015
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    heat and mass transfer
    second grade fluid
    porous medium
    stretching surface
    wymiana ciepła
    wymiana masy
    materiały porowate
    Opis:
    The investigation deals with the combined heat and mass transfer in a mixed convection boundary layer flow over a stretching vertical surface in a porous medium filled with a viscoelastic second grade fluid. The partial differential equations governing the model have been transformed by a similarity transformation and the system of coupled-ordinary differential equations is solved by employing the shooting method with the fifth-order Runge-Kutta-Fehlberg iteration technique. Effects of various values of physical parameters embedded in the flow model on the dimensionless velocity, temperature and concentration distributions are discussed and shown with the aid of graphs. Numerical values of physical quantities, such as the local skin-coefficient, local Nusselt number and local Sherwood number are presented in a tabular form. It is observed that the boundary layer fluid velocity increases as the second grade parameter, mixed convection parameter and Prandtl number increase.
    Źródło:
    International Journal of Applied Mechanics and Engineering; 2015, 20, 2; 239-255
    1734-4492
    2353-9003
    Pojawia się w:
    International Journal of Applied Mechanics and Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Thermal radiation and magnetic field effects on unsteady mixed convection flow and mass transfer over a porous stretching surface with heat generation
    Autorzy:
    Reddy, G. V. R.
    Reddy, B. A.
    Reddy, N. B.
    Powiązania:
    https://bibliotekanauki.pl/articles/955276.pdf
    Data publikacji:
    2013
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    promieniowanie
    wymiana masy
    rozciąganie
    pole magnetyczne
    wytwarzanie ciepła
    radiation
    mass transfer
    stretching surface
    magnetic field
    heat generation
    temperature
    Opis:
    The effects of thermal radiation and mass transfer on an unsteady hydromagnetic boundary layer mixed convection flow along a vertical porous stretching surface with heat generation are studied. The fluid is assumed to be viscous and incompressible. The governing partial differential equations are transformed into a system of ordinary differential equations using similarity variables. Numerical solutions of these equations are obtained by using the Runge-Kutta fourth order method along with the shooting technique. Velocity, temperature, concentration, the skin-friction coefficient, Nusselt number and Sherwood number for variations in the governing thermo physical parameters are computed, analyzed and discussed.
    Źródło:
    International Journal of Applied Mechanics and Engineering; 2013, 18, 4; 1151-1164
    1734-4492
    2353-9003
    Pojawia się w:
    International Journal of Applied Mechanics and Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Thermal analysis of generalized Burgers nanofluid over a stretching sheet with nonlinear radiation and non uniform heat source/sink
    Autorzy:
    Kumar, K. G.
    Ramesh, G. K.
    Gireesha, B. J.
    Powiązania:
    https://bibliotekanauki.pl/articles/240767.pdf
    Data publikacji:
    2018
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    burgers nanofluid
    non-uniform heat source/sink
    non-linear radiation
    magnetic field
    stretching surface
    pole magnetyczne
    powierzchnia
    rozciąganie
    promieniowanie
    nanofluid
    Opis:
    The work deals with the heat analysis of generalized Burgers nanofluid over a stretching sheet. The Rosseland approximation is used to model the non-linear thermal radiation and incorporated non-uniform heat source/sink effect. The governing equations reduced to a set of nonlinear ordinary differential equations under considering the suitable similarity transformations. The obtained ordinary differential equations equations are solved numerically by Runge-Kutta-Fehlberg order method. The effect of important parameters on velocity, temperature and concentration distributions are analyzed and discussed through the graphs. It reveals that temperature increases with the increase of radiation and heat source/sink parameter.
    Źródło:
    Archives of Thermodynamics; 2018, 39, 2; 97-122
    1231-0956
    2083-6023
    Pojawia się w:
    Archives of Thermodynamics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Three dimensional MHD Casson fluid flow over a stretching surface with variable thermal conductivity
    Autorzy:
    Ganga, B.
    Charles, S.
    Abdul Hakeem, A. K.
    Nadeem, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/1839858.pdf
    Data publikacji:
    2021
    Wydawca:
    Politechnika Częstochowska. Wydawnictwo Politechniki Częstochowskiej
    Tematy:
    three-dimensional flow
    Casson fluid
    stretching surface
    heat generation
    trójwymiarowy przepływ
    przepływ trójwymiarowy
    przepływ magnetohydrodynamiczny
    MHD
    płyn Cassona
    rozciąganie powierzchni
    wytwarzanie ciepła
    przewodność cieplna
    Opis:
    The three-dimensional magnetohydrodynamic (MHD) boundary layer flow of a Casson fluid over a stretching surface set into a porous medium with variable thermal conductivity and heat generation/absorption has been researched. Conservation laws of mass, momentum and energy are changed into ordinary differential equations, which are numerically dealt with by applying the fourth order Runge-Kutta integration scheme in relationship with shooting procedure. The dimensionless velocity, temperature, skin friction coefficient and the local Nusselt number inside the boundary layer are processed and examined through tables and illustrations for various physical parameters. The numerical outcomes obtained for the specific case are sensible in great concurrence with the existing results. Results indicate that momentum boundary layer reduces for the Hartman number and Casson fluid parameter. Temperature is found as an enlightened function for the heat generation and thermal conductivity parameter.
    Źródło:
    Journal of Applied Mathematics and Computational Mechanics; 2021, 20, 1; 25-36
    2299-9965
    Pojawia się w:
    Journal of Applied Mathematics and Computational Mechanics
    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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