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    Wyświetlanie 1-5 z 5
    Tytuł:
    Hydrodynamic and hydromagnetic stability of two superposed elastico – viscous fluids of different permeability with dust in porous medium
    Autorzy:
    Singh, M.
    Mehta, C. B.
    Powiązania:
    https://bibliotekanauki.pl/articles/266188.pdf
    Data publikacji:
    2015
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    Rayleigh-Taylor instability
    magnetic field
    suspended particles
    Walters' B fluid
    different permeability and porous medium
    pole magnetyczne
    materiały porowate
    lepkość płynu
    Opis:
    Rayleigh-Taylor instability of two superposed Walters’ B has elastico-viscous fluids in a uniform magnetic field through a porous medium with different permeability been studied to include the suspended (dust) particles effect. Using normal mode technique a dispersion relation has been derived. The stability analysis has been carried out. The magnetic field stabilizes the unstable configuration for the wave number band K > K* in chich the system is unstable in the absence of the magnetic field. It is also found that for a potential stable arrangement for Walters B’ elastico-viscous fluids of different permeabilities in the presence of suspended particles through a porous medium the system is stable, whereas in the potentially unstable case instability of the system occurs.
    Źródło:
    International Journal of Applied Mechanics and Engineering; 2015, 20, 2; 407-416
    1734-4492
    2353-9003
    Pojawia się w:
    International Journal of Applied Mechanics and Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    On thermal instability of Kuvshiniski fluid with suspended particles saturated in a porous medium in the presence of a magnetic field
    Autorzy:
    Singh, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/265476.pdf
    Data publikacji:
    2017
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    thermal convection
    Kuvshiniski fluid
    suspended particles
    magnetic field
    porous medium
    Opis:
    The thermal instability of a Kuvshiniski viscoelastic fluid is considered to include the effects of a uniform horizontal magnetic field, suspended particles saturated in a porous medium. The analysis is carried out within the framework of the linear stability theory and normal mode technique. For the case of stationary convection, the Kuvshiniski viscoelastic fluid behaves like a Newtonian fluid and the magnetic field has a stabilizing effect, whereas medium permeability and suspended particles are found to have a destabilizing effect on the system, oscillatory modes are introduced in the system, in the absence of these the principle of exchange of stabilities is valid. Graphs in each case have been plotted by giving numerical values to the parameters, depicting the stability characteristics. Sufficient conditions for the avoidance of overstability are also obtained.
    Źródło:
    International Journal of Applied Mechanics and Engineering; 2017, 22, 4; 981-994
    1734-4492
    2353-9003
    Pojawia się w:
    International Journal of Applied Mechanics and Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Stability of superposed fluids through magnetic field with suspended particles of different permeability saturated through porous layer
    Autorzy:
    Singh, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/265428.pdf
    Data publikacji:
    2015
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    porous medium
    suspended particles
    Rivlin-Ericksen fluid
    magnetic field
    porowatość
    pole magnetyczne
    ciecz Rivlina-Ericksena
    Opis:
    The instability of plane interface between two superposed Rivlin-Ericksen elastico-viscous fluids saturated through a porous medium has been studied to include the suspended (dust) particles effect. Following the linearized stability theory and normal mode analysis the dispersion relation is obtained. For stationary convection, the Rivlin-Ericksen elastico-viscous fluid behaves like Newtonian fluids. It found that for a potentially stable arrangement the Rivlin-Ericksen elastico-viscous fluid of different permeabilities in the presence of suspended particles in a porous medium is stable, whereas in a potentially unstable case instability of the system occurs. In the presence of a magnetic field for a potentially stable arrangement the system is always stable and for the potentially unstable arrangement, the magnetic field succeeds in stabilizing certain wave-number band which was unstable in the absence of the magnetic field.
    Źródło:
    International Journal of Applied Mechanics and Engineering; 2015, 20, 4; 889-898
    1734-4492
    2353-9003
    Pojawia się w:
    International Journal of Applied Mechanics and Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    On a couple-stress Rivlin-Ericksen ferromagnetic fluid heated from below with varying gravity, rotation, magnetic field and suspended particles flowing through a porous medium
    Autorzy:
    Rahul
    Sharma, Naveen
    Powiązania:
    https://bibliotekanauki.pl/articles/2174204.pdf
    Data publikacji:
    2022
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    niestabilność termiczna
    pole magnetyczne
    płyn ferromagnetyczny
    naprężenie
    thermal instability
    magnetic field
    couple-stress fluid
    ferromagnetic fluid
    suspended particles
    Opis:
    The thermal instability of a couple-stress Rivlin-Ericksen ferromagnetic fluid with varying gravity field, suspended particles, rotation and magnetic field flowing through a porous medium is investigated. The dispersion relation has been developed and solved analytically using the normal mode approach and linear stability theory. The effect of suspended particles, rotation, couple stress, permeability and magnetic field on the fluid layer has been investigated. For stationary conventions, it is found that suspended particles always have a destabilizing effect for λ>0 and a stabilizing effect for λ<0 and couple-stress, magnetic field and permeability of the medium have a stabilizing effect on the thermal instability under certain conditions. In the absence of the rotation couple-stress has a stabilizing effect if λ >0 and a destabilizing effect if λ<0. Rotation has a stabilizing effect if λ >0 and a destabilizing effect if λ<0. In the absence of rotation permeability has a stabilizing effect if λ<0 and a destabilizing effect if λ>0. Magnetisation always has a stabilizing effect ( λ>0 or λ<0).
    Źródło:
    International Journal of Applied Mechanics and Engineering; 2022, 27, 2; 177--198
    1734-4492
    2353-9003
    Pojawia się w:
    International Journal of Applied Mechanics and Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Vorticity transport analysis in magnetic viscoelastic fluid
    Autorzy:
    Kumar, P.
    Mohan, H.
    Hoshoudy, G.
    Powiązania:
    https://bibliotekanauki.pl/articles/281534.pdf
    Data publikacji:
    2016
    Wydawca:
    Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
    Tematy:
    Rivlin-Ericksen viscoelastic fluid
    suspended magnetic particles
    vorticity
    Opis:
    Results of investigation on the transport of vorticity in Rivlin-Ericksen viscoelastic fluid in the presence of suspended magnetic particles is presented here. Equations governing the transport of vorticity in Rivlin-Ericksen viscoelastic fluid in the presence of suspended magnetic particles are obtained from the equations of magnetic fluid flow. From these equations it follows that the transport of solid vorticity is coupled with the transport of fluid vorticity. Further, we find that because of thermokinetic process, fluid vorticity may exist in the absence of solid vorticity, but when fluid vorticity is zero, then solid vorticity is necessarily zero. A two-dimensional case is also studied and found that the fluid vorticity is indirectly influenced by the temperature and the magnetic field gradient.
    Źródło:
    Journal of Theoretical and Applied Mechanics; 2016, 54, 1; 127-133
    1429-2955
    Pojawia się w:
    Journal of Theoretical and Applied Mechanics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-5 z 5

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