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Wyszukujesz frazę "spectral collocation method" wg kryterium: Temat

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    Wyświetlanie 1-4 z 4
    Tytuł:
    Chebyshev Spectral Collocation Method to Micropolar Fluid Flow through a Porous Channel driven by Suction/Injection with High Mass Transfer
    Autorzy:
    Jayesimi, L. O.
    Sobamowo, M. G.
    Akinshilo, A. T.
    Waheed, M. A.
    Powiązania:
    https://bibliotekanauki.pl/articles/1030143.pdf
    Data publikacji:
    2020
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    Chebyshev spectral collocation method
    Mass Transfer
    Micropolar fluids
    Porous media
    Opis:
    This paper presents the application of Chebyshev spectral collocation method to flow analysis of a micropolar fluid conveyed through porous channel driven by suction or injection with high mass transfer. Effects of flow and rotation parameters such as Reynolds number and micro rotation parameters on the flow characteristics of the micropolar fluid are investigated using the developed approximate analytical solutions through the method. Comparing the results of the numerical solutions obtained in this study with the other results of the other methods in literature, very good agreements are established. The results obtained from this work can be used to further the study of the behavior of micropolar fluids in applications such as lubricants, blood flow porous media, micro channels and flow in capillaries.
    Źródło:
    World Scientific News; 2020, 143; 39-52
    2392-2192
    Pojawia się w:
    World Scientific News
    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
    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:
    Effects of the control parameters on the stability of a laminar boundary layer on a porous flat plate
    Autorzy:
    Lihonou, T. F.
    Monwanou, A. V.
    Miwadinou, C. H.
    Chabi Orou, J. B.
    Powiązania:
    https://bibliotekanauki.pl/articles/2174178.pdf
    Data publikacji:
    2021
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    przepuszczalność
    liczba Reynoldsa
    metoda kolokacji
    permeability parameter
    small Reynolds number
    linear temporal stability
    boundary layer
    modified Orr-Sommerfeld equation
    spectral collocation method
    Opis:
    This work is devoted to the analysis of the linear temporal stability of a laminar dynamic boundary layer on a horizontal porous plane plate. The basic flow is assumed to be laminar and two-dimensional. The basic flow velocity profiles are obtained by numerically solving the Blasius equation using the Runge-Kutta method. The perturbations of these basic solutions are expressed in the form of three-dimensional Tollmien-Schlichting waves. The formulation of the stability problem leads to the Orr-Sommerfeld equation modified by the permeability parameter (Darcy number) and the small Reynolds number. This equation is given in a general form which can be applied to the Chebyshev domain and the boundary layer domain and solved numerically using the Chebyshev spectral collocation method. The marginal stability diagrams, the critical Reynolds numbers and the eigenvalue spectra are obtained for different values of the parameters which have modified the stability equation. Numerical solutions indicate the importance of the effect of these parameters on the flow stability characteristics.
    Źródło:
    International Journal of Applied Mechanics and Engineering; 2021, 26, 4; 113--127
    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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