title: Particle trajectories and size sorting above a rippled bed under standing water waves.
abstract: Particle trajectories and size sorting above an artificial rippled bed under standing surface waves are experimentally and theoretically studied. It is observed that fine particles may be trapped in a very thin region near the ripple crests. When the surface waves damp, fine particles concentrate on the top of ripple crests forming narrow strips, while coarse particles settle more uniformly along the rippled bed. Measurements of particle concentrations before their deposition confirm this size segregation. The present experimental results are explained with a theoretical approach.
authors.affiliation: Laboratoire Ondes et Milieux Complexes, UMR CNRS 6294 Université du Havre, 25 rue Philippe Lebon, B.P. 540, F-76058 Le Havre Cedex, France. tien-dat.chu@univ-lehavre.fr
authors.forename: T D
authors.initials: TD
authors.lastname: Chu
authors.forename: A
authors.initials: A
authors.lastname: Jarno-Druaux
authors.forename: F
authors.initials: F
authors.lastname: Marin
authors.forename: A B
authors.initials: AB
authors.lastname: Ezersky
mesh_terms: D003102:Colloids / Q000737:chemistry*; D003198:Computer Simulation; D008956:Models, Chemical; D008958:Models, Molecular; D009038:Motion; D012212:Rheology / Q000379:methods*; D014867:Water / Q000737:chemistry*; D014872:Water Movements
chemical_list: D003102:Colloids; D014867:Water