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Determination of the critical Shields number for particle erosion in laminar flow
 

Summary: Determination of the critical Shields number for particle erosion
in laminar flow
Malika Ouriemi, Pascale Aussillous, and Marc Medale
IUSTI-CNRS UMR 6595, Polytech'Marseille, Technopôle de Château-Gombert,
13453 Marseille Cedex 13, France
Yannick Peysson
Institut Français du Pétrole, 1-4 avenue de Bois-Préau, 92852 Rueil-Malmaison Cedex, France
Élisabeth Guazzelli
IUSTI-CNRS UMR 6595, Polytech'Marseille, Technopôle de Château-Gombert,
13453 Marseille Cedex 13, France
Received 20 February 2007; accepted 8 May 2007; published online 28 June 2007
We present reproducible experimental measurements for the onset of grain motion in laminar flow
and find a constant critical Shields number for particle erosion, i.e., c
=0.12±0.03, over a large
range of small particle Reynolds number: 1.5 10-5
Rep 0.76. Comparison with previous
studies found in the literature is provided. © 2007 American Institute of Physics.
DOI: 10.1063/1.2747677
Erosion of particles by shearing flows commonly occurs
in a wide variety of natural phenomena, such as sediment

  

Source: Aussillous, Pascale - Polytech Marseille

 

Collections: Physics; Engineering