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Wyszukujesz frazę "Gupta, K." wg kryterium: Autor

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    Wyświetlanie 1-6 z 6
    Tytuł:
    Surface waves in non-homogeneous, general magnetothermo, viscoelastic media of higher order
    Autorzy:
    Sethi, M.
    Gupta, K. C.
    Rani, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/955273.pdf
    Data publikacji:
    2013
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    fale powierzchniowe
    lepkość
    lepkosprężystość
    inhomogeneous media
    variable density
    surface waves
    viscosity
    Opis:
    The aim of the present paper is to investigate surface waves in a non-homogeneous, isotropic, visco-elastic solid medium of n-th order including the time rate of strain. The theory of generalised surface waves has firstly been developed and then it has been employed to investigate particular cases of waves, viz., Stoneley, Rayleigh and Love type. The wave velocity equations have been obtained for different cases and are in well agreement with the corresponding classical result, when the effects of viscosity, temperature, magnetism as well as nonhomogeneity of the material medium are ignored.
    Źródło:
    International Journal of Applied Mechanics and Engineering; 2013, 18, 4; 1221-1236
    1734-4492
    2353-9003
    Pojawia się w:
    International Journal of Applied Mechanics and Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Surface waves in fibre-reinforced anisotropic solid elastic media under the influence of gravity
    Autorzy:
    Sethi, M.
    Gupta, K. C.
    Gupta, D.
    Manisha, -
    Powiązania:
    https://bibliotekanauki.pl/articles/955330.pdf
    Data publikacji:
    2013
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    fale powierzchniowe
    lepkość
    fala Rayleigha
    siła ciężkości
    fibre-reinforced medium
    surface waves
    viscosity
    Rayleigh waves
    gravity
    Opis:
    The aim of the present paper is to investigate surface waves in an anisotropic, elastic solid medium under the influence of gravity. First, a theory of generalised surface waves was developed and then it was employed to investigate particular cases of waves, viz., Stoneley and Rayleigh, Love type. The wave velocity equations were obtained for different cases and they are in well agreement with the corresponding classical result, when the effect of gravity, viscosity as well as parameters for fibre-reinforcement of the material medium are ignored.
    Źródło:
    International Journal of Applied Mechanics and Engineering; 2013, 18, 1; 177-188
    1734-4492
    2353-9003
    Pojawia się w:
    International Journal of Applied Mechanics and Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Hall effect on thermal instability of viscoelastic dusty fluid in porous medium
    Autorzy:
    Singh, M.
    Gupta, R. K.
    Powiązania:
    https://bibliotekanauki.pl/articles/265280.pdf
    Data publikacji:
    2013
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    niestabilność termiczna
    płyn lepkosprężysty
    porowatość
    thermal instability
    Rivlin-Ericksen viscoelastic fluid
    suspended particles
    Hall current effect
    porous medium
    Opis:
    The effect of Hall currents and suspended dusty particles on the hydromagnetic stability of a compressible, electrically conducting Rivlin-Ericksen elastico viscous fluid in a porous medium is considered. Following the linearized stability theory and normal mode analysis the dispersion relation is obtained. For the case of stationary convection, Hall currents and suspended particles are found to have destabilizing effects whereas compressibility and magnetic field have stabilizing effects on the system. The medium permeability, however, has stabilizing and destabilizing effects on thermal instability in contrast to its destabilizing effect in the absence of the magnetic field. The critical Rayleigh numbers and the wave numbers of the associated disturbances for the onset of instability as stationary convection are obtained and the behavior of various parameters on critical thermal Rayleigh numbers are depicted graphically. The magnetic field, Hall currents and viscoelasticity parameter are found to introduce oscillatory modes in the systems, which did not exist in the absence of these parameters.
    Źródło:
    International Journal of Applied Mechanics and Engineering; 2013, 18, 3; 871-886
    1734-4492
    2353-9003
    Pojawia się w:
    International Journal of Applied Mechanics and Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    On thermosolutal convection in presence of compressible fluid with fine dust
    Autorzy:
    Singh, M.
    Gupta, R. K.
    Powiązania:
    https://bibliotekanauki.pl/articles/955304.pdf
    Data publikacji:
    2014
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    płyn lepkosprężysty
    ściśliwość
    płyn warstwowy
    Rivlin-Ericksen elastico-viscous fluid
    compressible and fine dust
    Opis:
    A layer of a Rivlin-Ericksen elastico-viscous fluid heated and soluted from below in the presence of compressibility and suspended particles (fine dust) effect is considered. For stationary convection, the Rivlin- Ericksen, elastico-viscous fluid behaves like a Newtonian fluid. The oscillatory modes are introduced due to the presence of a stable solute gradient, suspended particles destabilize the system whereas the stable solute gradient has a stabilizing effect on the system and the effect of compressibility is to postpone the onset of thermosolutal convection. The stable solute gradient and compressibility postpone the onset of convection, whereas the suspended particles hasten the onset of convection. The stable solute gradient introduces oscillatory modes in the systems which were non-existent in its absence.
    Źródło:
    International Journal of Applied Mechanics and Engineering; 2014, 19, 1; 133-143
    1734-4492
    2353-9003
    Pojawia się w:
    International Journal of Applied Mechanics and Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Marangoni convection in a relatively hotter or cooler liquid layer with free boundaries
    Autorzy:
    Gupta, A. K.
    Shandil, R. G.
    Powiązania:
    https://bibliotekanauki.pl/articles/265233.pdf
    Data publikacji:
    2013
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    napięcie powierzchniowe
    konwekcja
    przewodzenie
    stabilność liniowa
    surface tension
    convection
    conducting
    linear stability
    Opis:
    In this paper, we study the onset of cellular convection in a horizontal fluid layer heated from below, with a free-slip boundary condition at the bottom when the driving mechanism is surface tension at the upper free surface, in the light of the modified analysis of Banerjee et al. (Jour. Math. & Phys. Sci., 1983, 17, 603). This leads to a formulation of the problem which depends upon whether the liquid layer is relatively hotter or cooler. It is found that the phenomenon of surface tension driven instability problems should not only depend upon the Marangoni number which is proportional to the maintained temperature differences across the layer but also upon another parameter that arises due to variation in the specific heat at constant volume on account of the variations in temperature. Numerical results are obtained for the problem wherein the lower free boundary is perfectly thermally conducting.
    Źródło:
    International Journal of Applied Mechanics and Engineering; 2013, 18, 2; 581-588
    1734-4492
    2353-9003
    Pojawia się w:
    International Journal of Applied Mechanics and Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effect of periphery fixity on ballistic limit of thin aluminum plate subjected to blunt and ogival projectile impact
    Autorzy:
    Tiwari, G.
    Iqbal, M. A.
    Gupta, P. K.
    Powiązania:
    https://bibliotekanauki.pl/articles/955195.pdf
    Data publikacji:
    2014
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    symulacja numeryczna
    metoda elementów skończonych
    aluminium
    periphery fixity
    blunt nosed projectile
    ABAQUS
    Opis:
    Three-dimensional numerical simulations were carried out with the ABAQUS/explicit finite element code to study the influence of target boundary conditions on its ballistic limit. 1mm thick 1100-H12 aluminum target of 255 mm span diameter was hit by 19 mm diameter and 50.8 mm length blunt nosed projectile. The mass of the projectile was kept as 52.5 gm. The boundary condition effects on the ballistic limit were investigated by varying the target periphery boundary condition as fully clamped and partially clamped target (75%, 50% and 25%) subjected to projectile impact. The energy absorption and ballistic limit of the target was found to be significantly affected by the boundary conditions. Some of the finite element analysis results were compared with experimental and numerical results reported in international literature and a good agreement between the two was found.
    Źródło:
    International Journal of Applied Mechanics and Engineering; 2014, 19, 2; 379-395
    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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