THERMAL SCIENCE

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Pardeep Kumar

,

Mahinder Singh

INSTABILITY OF TWO ROTATING VISCOELASTIC (WALTERS B') SUPERPOSED FLUIDS WITH SUSPENDED PARTICLES IN POROUS MEDIUM

ABSTRACT
The instability of the plane interface between two Walters B' viscoelastic superposed fluids permeated with suspended particles and uniform rotation in porous medium is considered following the linearized perturbation theory and normal mode analysis. For the stable configuration the system is found to be stable or unstable if ν' < or > k1/Є, depending on kinematic viscoelasticity, permeability of the medium and porosity of the medium. However, the system is found to be unstable for the potentially unstable configuration. .
KEYWORDS
Rayleigh-Taylor instability, Walters B viscoelastic fluid, suspended particles, uniform rotation, porous medium
PAPER SUBMITTED: 2006-08-03
PAPER REVISED: 2007-03-06
PAPER ACCEPTED: 2007-03-09
DOI REFERENCE: https://doi.org/10.2298/TSCI0701093K
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2007, VOLUME 11, ISSUE Issue 1, PAGES [93 - 102]
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Instability of two rotating viscoelastic (Walters B') superposed fluids with suspended particles in porous medium

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