Sedimentation instabilities: Impact of the fluid compressibility and viscosity - Archive ouverte HAL Access content directly
Journal Articles Physical Review E : Statistical, Nonlinear, and Soft Matter Physics Year : 2010

Sedimentation instabilities: Impact of the fluid compressibility and viscosity

(1) , (2) , (3) , (4)
1
2
3
4

Abstract

The effect of an interstitial fluid on the mixing of sedimenting grains is studied numerically in a closed rectangular Hele-Shaw cell. We investigate the impact of the fluid compressibility and fluid viscosity on the dynamics and structures of the granular Rayleigh-Taylor instability. First we discuss the effect of the fluid compressibility on the initial fluid pressure evolution and on the dynamics of the particles. Here, the emerging patterns do not seem highly affected by the compressibility change studied. To characterize the patterns and motion the combined length of the particle trajectories in relation to the movement of the center of mass is analyzed, and the separation of particle pairs is measured as a function of the fluid viscosity.
Fichier principal
Vignette du fichier
2010-NieblingFlekkoyMaloyToussaint-PRE2.pdf (811.73 Ko) Télécharger le fichier
Origin : Publisher files allowed on an open archive
Loading...

Dates and versions

insu-02377739 , version 1 (24-11-2019)

Identifiers

Cite

Michael Niebling, Eirik Grude Flekkøy, Knut Jørgen Måløy, Renaud Toussaint. Sedimentation instabilities: Impact of the fluid compressibility and viscosity. Physical Review E : Statistical, Nonlinear, and Soft Matter Physics, 2010, 82 (5), ⟨10.1103/PhysRevE.82.051302⟩. ⟨insu-02377739⟩
119 View
96 Download

Altmetric

Share

Gmail Facebook Twitter LinkedIn More