Kelvin - Helmholtz instability of two superposed Oldroydian viscoelastic fluid layers in a horizontal magnetic field

• Autorzy: Khan A. , Tak S. S. , Patni P.
• Języki publikacji: EN

Abstrakty

EN

The Kelvin-Helmholtz instability of the plane interface separating two superposed viscous electrically conducting streaming Oldroydian fluids permeated with surface tension and magnetic field in a porous medium is considered. The stability motion is also assumed to have uniform two dimensional streaming velocity. The stability analysis has been carried out for two highly viscous fluids. By applying the normal mode technique to the linearized perturbation equations, the dispersion relation has been derived. As in the case of superposed Newtonian fluids, the system is stable in the potentially stable case and unstable in the potentially unstable case, that holds also for the present case. The behavior of growth rate with respect to kinematic viscosity, elasticity, permeability of porous medium, surface tension and streaming velocity are examined numerically and discussed in detail in section 5.

Słowa kluczowe

EN

Kelvin-Helmholtz instability; Oldroydian fluid; porous medium; streaming velocity; magnetic field

PL

niestabilność Kelvina-Helmholtza; ciecze lepkosprężyste; materiały porowate; prędkość transmisji strumieniowej; pole magnetyczne

• Wydawca: Oficyna Wydawnicza Uniwersytetu Zielonogórskiego
• Czasopismo: International Journal of Applied Mechanics and Engineering
• Rocznik: 2010
• Tom: Vol. 15, no 4
• Strony: 1129--1142
• Opis fizyczny: Bibliogr. 34 poz., wykr.

Twórcy

autor

Khan A.

autor

Tak S. S.

autor

Patni P.

• Department of Mathematics and Statistics, J.N.V. University Lachoo Memorial College of Science and Technology Jodhpur, INDIA,

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