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    Wyświetlanie 1-4 z 4
    Tytuł:
    Radiation and chemical reaction effects on MHD flow along a moving vertical porous plate
    Autorzy:
    Reddy, G. V. R.
    Reddy, N. B.
    Gorla, R. S. R.
    Powiązania:
    https://bibliotekanauki.pl/articles/265207.pdf
    Data publikacji:
    2016
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    magnetohydrodynamika
    porowatość
    promieniowanie cieplne
    wymiana ciepła
    wymiana masy
    reakcja chemiczna
    MHD
    porous medium
    thermal radiation
    heat and mass transfer
    chemical reaction
    Opis:
    This paper presents an analysis of the effects of magnetohydrodynamic force and buoyancy on convective heat and mass transfer flow past a moving vertical porous plate in the presence of thermal radiation and chemical reaction. The governing partial differential equations are reduced to a system of self-similar equations using the similarity transformations. The resultant equations are then solved numerically using the fourth order Runge-Kutta method along with the shooting technique. The results are obtained for the velocity, temperature, concentration, skin-friction, Nusselt number and Sherwood number. The effects of various parameters on flow variables are illustrated graphically, and the physical aspects of the problem are discussed.
    Źródło:
    International Journal of Applied Mechanics and Engineering; 2016, 21, 1; 157-168
    1734-4492
    2353-9003
    Pojawia się w:
    International Journal of Applied Mechanics and Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Bidirectionally stretched flow of Jeffrey liquid with nanoparticles, Rosseland radiation and variable thermal conductivity
    Autorzy:
    Archana, M.
    Gireesha, B. J.
    Rashidi, M. M.
    Prasannakumara, B. C.
    Gorla, R. S. R.
    Powiązania:
    https://bibliotekanauki.pl/articles/240409.pdf
    Data publikacji:
    2018
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    heat mass transfer
    jeffrey nanofluid
    variable thermal conductivity
    rosseland approximation
    suction
    ciepło
    masa
    zmienna przewodność cieplna
    aproksymacja
    ssanie
    Opis:
    Heat and mass transfer stretched flow of an incompressible, electrically conducting Jeffrey fluid has been studied numerically. Nanoparticles are suspended in the base fluid and it has many applications such as cooling of engines, thermal absorption systems, lubricants fuel cell, nanodrug delivery system and so on. Temperature dependent variable thermal conductivity with Rosseland approximation is taken into account and suction effect is employed in the boundary conditions. The governing partial differential equations are first transformed into set of ordinary differential equations using selected similarity transformations, which are then solved numerically using Runge-Kutta-Felhberg fourth-fifth order method along with shooting technique. The flow, heat and mass transfer characteristics with local Nusselt number for various physical parameters are presented graphically and a detailed discussion regarding the effect of flow parameters on velocity and temperature profiles are provided. It is found that, increase of variable thermal conductivity, radiation, Brownian motion and thermophoresis parameter increases the rate of heat transfer. Local Nusselt number has been computed for various parameters and it is observed that, in the presence of variable thermal conductivity and Rosseland approximation, heat transfer characteristics are higher as compared to the constant thermal conductivity and linear thermal radiation.
    Źródło:
    Archives of Thermodynamics; 2018, 39, 4; 33--57
    1231-0956
    2083-6023
    Pojawia się w:
    Archives of Thermodynamics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Natural convection and radiation in a radial porous fin with variable thermal conductivity
    Autorzy:
    Darvishi, M. T.
    Kani, F.
    Gorla, R. S. R.
    Powiązania:
    https://bibliotekanauki.pl/articles/955178.pdf
    Data publikacji:
    2014
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    konwekcja naturalna
    promieniowanie
    wydajność cieplna
    metoda kolokacji
    porous radial fin
    natural convection
    radiation
    thermal performance
    spectral collocation method
    Opis:
    In this study, the effects of radiation and convection heat transfer in a radial porous fin are considered. The geometry considered is that of a rectangular profile fin. The porous fin allows the flow to infiltrate through it and solid-fluid interaction takes place. This study is performed using Darcy’s model to formulate the heat transfer equation. The thermal conductivity is assumed to be a function of temperature. The effects of the natural convection parameter Nc , radiation parameter Nr and thermal conductivity parameter m on the dimensionless temperature distribution and heat transfer rate are discussed. The results suggest that the radiation transfers more heat than a similar model without radiation.
    Źródło:
    International Journal of Applied Mechanics and Engineering; 2014, 19, 1; 27-37
    1734-4492
    2353-9003
    Pojawia się w:
    International Journal of Applied Mechanics and Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Thermal analysis of a fully wet porous radial fin with natural convection and radiation using the spectral collocation method
    Autorzy:
    Khani, F.
    Darvishi, M. T.
    Gorla, R. S. R.
    Gireesha, B. J.
    Powiązania:
    https://bibliotekanauki.pl/articles/264453.pdf
    Data publikacji:
    2016
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    porowatość
    naturalna konwekcja
    promieniowanie
    analiza termiczna
    wet porous radial fin
    natural convection
    radiation
    thermal analysis
    spectral collocation method
    Opis:
    Heat transfer with natural convection and radiation effect on a fully wet porous radial fin is considered. The radial velocity of the buoyancy driven flow at any radial location is obtained by applying Darcy’s law. The obtained non-dimensionalized ordinary differential equation involving three highly nonlinear terms is solved numerically with the spectral collocation method. In this approach, the dimensionless temperature is approximated by Chebyshev polynomials and discretized by Chebyshev-Gausse-Lobatto collocation points. A particular algorithm is used to reduce the nonlinearity of the conservation of energy equation. The present analysis characterizes the effect of ambient temperature in different ways and it provides a better picture regarding the effect of ambient temperature on the thermal performance of the fin. The profiles for temperature distributions and dimensionless base heat flow are obtained for different parameters which influence the heat transfer rate.
    Źródło:
    International Journal of Applied Mechanics and Engineering; 2016, 21, 2; 377-392
    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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