A meniscus fingering instability in viscoelastic fluids
نویسندگان
چکیده
منابع مشابه
instability of viscoelastic fluids in nearly parallel flows: a pseudo-spectral analysis
in the present work, the effect of fluid’s elasticity was investigated on the hydrodynamic instability of blasius flow. to determine the critical reynolds number as a function of the elasticity number, a two-dimensional linear temporal stability analysis was invoked. the viscoelastic fluid is assumed to obey the walters’ b fluid model for which base flow velocity profiles were fortunately avail...
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The effect of a horizontal magnetic field and a non-Newtonian stress tensor, as described by the Walters B' model, on the instability of two second order fluids of high kinematic viscosities and viscoelasticities is investigated. For the potentially stable configuration, it is found that the system is stable or unstable for a wavenumber range depending on the kinematic viscoelasticity. For the ...
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The temporal evolution of a water-sand interface driven by gravity is experimentally investigated. By means of a Fourier analysis of the evolving interface the growth rates are determined for the different modes appearing in the developing front. To model the observed behavior we apply the idea of the Rayleigh-Taylor instability for two stratified fluids. Carrying out a linear stability analysi...
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ژورنال
عنوان ژورنال: Physics of Fluids
سال: 2019
ISSN: 1070-6631,1089-7666
DOI: 10.1063/1.5097685