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Visualisation of Particle Pickup During Vortex Ring Impact

Author(s): J. C. Wells; E. J. Hopfinger

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Abstract: To aid understanding of sediment pickup by vortices in a turbulent flow, a vortex ring was projected downward in viscous liquid against isolated beads lying on a fixed horizontal bed of equally-sized beads. The beads' motion and the flow field were studied qualitatively and quantitatively using cinematography. Pour aider a la comprehension du soulevement des sediments par des tourbillons en ecoulement turbulent, un tourbillon annulaire a ete projete vers le bas dans un liquide visqueux, soulevant ainsi des billes isolees posees sur une couche de billes fixes de meme taille. Le mouvement des billes et l'ecoulement ontete etudies a partir de films cine 16 mm.

DOI:

Year: 1993

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