Abstract
Some model experiments were carried out in a laboratory flume in order to investigate the formation process of local flow and and scour and their mechanism in a steady condition at flow convergent parts along revetments in river channels, and effects of the revetment slope on these process and mechanism.Experimental results revealed the flow in a local scour hole and its surroundings consists of a surface flow, a vortex flow at a flow convergent point, two spiral flows at its both side and a base flow, and that these flows contribute to the formationof a local scour respectively in corespondence with its strength.
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