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Threshold conditions for sand movement on a rippled bed
Authors:M. S. Kapdasli  K. R. Dyer
Affiliation:(1) Technical University of Istanbul, Turkey;(2) Institute of Oceanographic Sciences, Bidston, Birkenhead, United Kingdom
Abstract:Flume experiments have been carried out to determine the threshold of grain movement on a rippled bed. The results indicate a form drag component of between 5 and 12 times the skin friction. The threshold of motion on the rippled sand bed can be represented by tau = 70D0.3 in whichD > 0.09 cm.
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