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Wyszukujesz frazę "modified Reynolds equation" wg kryterium: Temat

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    Wyświetlanie 1-7 z 7
    Tytuł:
    Influence of total inertia effects in a thrust curvilinear bearing lubricated with Newtonian lubricants
    Autorzy:
    Walicka, A.
    Jurczak, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/265900.pdf
    Data publikacji:
    2017
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    inertia
    modified Reynolds equation
    pressure distribution
    load-capacity
    bezwładność
    równanie Reynoldsa
    rozkład ciśnienia
    nośność
    Opis:
    In the paper, the flow of a Newtonian type of lubricant in the clearance of a curvilinear bearing is considered. It is assumed that the bearing walls are modelled as smooth and impermeable. In analytical considerations, full inertia of the longitudinal flow and partial inertia of the circumferential flow are taken into account. The equation of motion of the lubricant is solved by the modified method of averaged inertia. A thrust bearing and spherical bearing are considered, for which dimensionless pressure distributions and the bearing capacity are given.
    Źródło:
    International Journal of Applied Mechanics and Engineering; 2017, 22, 4; 1045-1058
    1734-4492
    2353-9003
    Pojawia się w:
    International Journal of Applied Mechanics and Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Mechanical parameters of the curvilinear squeeze film bearing lubricated by a Gecim-Winer fluid
    Autorzy:
    Walicka, A.
    Walicki, E.
    Powiązania:
    https://bibliotekanauki.pl/articles/265583.pdf
    Data publikacji:
    2017
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    modified Reynolds equation
    squeeze film
    mechanical parameters of bearing
    additives
    równanie Reynoldsa
    łożysko ślizgowe
    równanie ruchu
    Opis:
    Based upon a Gecim-Winer fluid flow model, a curvilinear squeeze film bearing is considered. The equations of motion are given in a specific coordinates system. After general considerations on the Gecim-Winer fluid flow these equations are used to derive the Reynolds equation. The solution of this equation is obtained by a method of successive approximation. As a result one obtains formulae expressing the pressure distribution and load-carrying capacity. The numerical examples of the Gecim-Winer fluid flow in gaps of two simple bearings: radial and spherical are presented.
    Źródło:
    International Journal of Applied Mechanics and Engineering; 2017, 22, 2; 465-473
    1734-4492
    2353-9003
    Pojawia się w:
    International Journal of Applied Mechanics and Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Curvilinear squeeze film bearing lubricated with a DeHaven fluid or with similar fluids
    Autorzy:
    Walicka, A.
    Jurczak, P.
    Falicki, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/264447.pdf
    Data publikacji:
    2017
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    DeHaven fluid
    modified Reynolds equation
    squeeze film
    mechanical parameters of the bearing
    łożysko
    równanie Reynoldsa
    płyn nienewtonowski
    Opis:
    In the paper, the model of a DeHaven fluid and some other models of non-Newtonian fluids, in which the shear strain rates are known functions of the powers of shear stresses, are considered. It was demonstrated that these models for small values of material constants can be presented in a form similar to the form of a DeHaven fluid. This common form, called a unified model of the DeHaven fluid, was used to consider a curvilinear squeeze film bearing. The equations of motion of the unified model, given in a specific coordinate system are used to derive the Reynolds equation. The solution to the Reynolds equation is obtained by a method of successive approximations. As a result one obtains formulae expressing the pressure distribution and load-carrying capacity. The numerical examples of flows of the unified DeHaven fluid in gaps of two simple squeeze film bearings are presented.
    Źródło:
    International Journal of Applied Mechanics and Engineering; 2017, 22, 3; 697-715
    1734-4492
    2353-9003
    Pojawia się w:
    International Journal of Applied Mechanics and Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Pressure distribution in a squeeze film spherical bearing with rough surfaces lubricated by an ellis fluid
    Autorzy:
    Jurczak, P.
    Falicki, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/265779.pdf
    Data publikacji:
    2016
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    łożyska
    równanie Reynoldsa
    model plastyczny
    pseudo-plastic model of Ellis fluid
    thrust curvilinear bearings
    modified Reynolds equation
    Opis:
    In this paper, the solution to a problem of pressure distribution in a curvilinear squeeze film spherical bearing is considered. The equations of motion of an Ellis pseudo-plastic fluid are presented. Using Christensen’s stochastic model of rough surfaces, different forms of Reynolds equation for various types of surface roughness pattern are obtained. The analytical solutions of these equations for the cases of externally pressurized bearing and squeeze film bearing are presented. Analytical solutions for the film pressure are found for the longitudinal and circumferential roughness patterns. As a result the formulae expressing pressure distribution in the clearance of bearing lubricated by an Ellis fluid was obtained. The numerical considerations for a spherical bearing are given in detail.
    Źródło:
    International Journal of Applied Mechanics and Engineering; 2016, 21, 3; 593-610
    1734-4492
    2353-9003
    Pojawia się w:
    International Journal of Applied Mechanics and Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Mechanical parameters of the squeeze film curvilinear bearing lubricated with a Prandtl fluid
    Autorzy:
    Walicka, A.
    Walicki, E.
    Powiązania:
    https://bibliotekanauki.pl/articles/265737.pdf
    Data publikacji:
    2016
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    równanie Reynoldsa
    płyn Prandtla
    parametry mechaniczne
    łożysko
    additives
    mechanical parameters of bearing
    squeeze film
    Prandtl fluid
    modified Reynolds equation
    Opis:
    Based upon a Prandtl fluid flow model, a curvilinear squeeze film bearing is considered. The equations of motion are given in a specific coordinate system. After general considerations on the Prandtl fluid flow these equations are used to derive the Reynolds equation. The solution of this equation is obtained by a method of successive approximation. As a result one obtains formulae expressing the pressure distribution and load-carrying capacity. The numerical examples of the Prandtl fluid flow in gaps of two simple bearings are presented.
    Źródło:
    International Journal of Applied Mechanics and Engineering; 2016, 21, 4; 967-978
    1734-4492
    2353-9003
    Pojawia się w:
    International Journal of Applied Mechanics and Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Inertia effects in a multilobe conical bearing lubricated with a couple stress fluid
    Autorzy:
    Walicka, A.
    Walicki, E.
    Jurczak, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/265020.pdf
    Data publikacji:
    2019
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    efekt bezwładności
    równanie Reynoldsa
    metoda Galerkina
    łożysko
    inertia effects
    modified Reynolds equation
    Galerkin method
    mechanical parameters of bearing
    additives
    Opis:
    In this paper, a multilobe conical bearing is analyzed. A lubricant modelled by a couple stress fluid flows In the bearing clearance . The Galerkin method is used to determine the mechanical parameters of multilobe journal bearings. An example of a two-lobe conical bearing is discussed in detail. The inertia of the flowing lubricant is taken into account in the analysis. It has been found that the increase of the couple stress generates an increase the pressure in the clearance.
    Źródło:
    International Journal of Applied Mechanics and Engineering; 2019, 24, 2; 439-451
    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 1-7 z 7

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