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Finger-like patterns in sedimenting water–sand suspensions

Title data

Völtz, Camilla ; Schröter, Matthias ; Iori, Giulia ; Betat, André ; Lange, Adrian ; Engel, Andreas ; Rehberg, Ingo:
Finger-like patterns in sedimenting water–sand suspensions.
In: Physics Reports. Vol. 337 (October 2000) Issue 1/2 . - pp. 117-138.
ISSN 0370-1573
DOI: https://doi.org/10.1016/S0370-1573(00)00058-2

Official URL: Volltext

Abstract in another language

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 and compose those results with the experimental data. Alternatively, the situation of the sedimenting sand can be modeled by a two-dimensional cellular automaton. A qualitative similarity between that model and the experimental situation is obtained.

Further data

Item Type: Article in a journal
Refereed: Yes
Institutions of the University: Faculties > Faculty of Mathematics, Physics und Computer Science > Department of Physics > Chair Experimental Physics V > Chair Experimental Physics V - Univ.-Prof. Dr. Ingo Rehberg
Profile Fields > Advanced Fields > Nonlinear Dynamics
Faculties
Faculties > Faculty of Mathematics, Physics und Computer Science
Faculties > Faculty of Mathematics, Physics und Computer Science > Department of Physics
Faculties > Faculty of Mathematics, Physics und Computer Science > Department of Physics > Chair Experimental Physics V
Profile Fields
Profile Fields > Advanced Fields
Result of work at the UBT: No
DDC Subjects: 500 Science > 530 Physics
Date Deposited: 08 Oct 2018 08:52
Last Modified: 08 Oct 2018 08:52
URI: https://eref.uni-bayreuth.de/id/eprint/42998