Fingering instability in a water-sand mixture

Schröter M, Lange A, Scherer MA, Engel A, Rehberg I (1998)

Publication Language: English

Publication Status: Published

Publication Type: Journal article, Original article

Publication year: 1998


Publisher: EDP Sciences: EPJ

Book Volume: 4

Pages Range: 475-484

Journal Issue: 4


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 analysis we calculate the growth rates from the corresponding dispersion relations for finite and infinite cell sizes. Based on the theoretical results the viscosity of the suspension is estimated to be approximately 100 times higher than that of pure water, in agreement with other experimental findings.

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Schröter, M., Lange, A., Scherer, M.A., Engel, A., & Rehberg, I. (1998). Fingering instability in a water-sand mixture. European Physical Journal B, 4(4), 475-484.


Schröter, Matthias, et al. "Fingering instability in a water-sand mixture." European Physical Journal B 4.4 (1998): 475-484.

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