Prediction of entrainment conditions for nonuniform, noncohesive sediments
- 19 January 1990
- journal article
- research article
- Published by Taylor & Francis in Journal of Hydraulic Research
- Vol. 28 (1) , 25-41
- https://doi.org/10.1080/00221689009499145
Abstract
A general model is presented for predicting entrainment conditions for nonuniform, noncohesive sediments. The model is based on an analysis of the moments of forces acting on a particle at the condition of incipient motion. Particle geometry and packing arrangement are accounted for as well as variations of near bed flow velocity and drag and lift coefficients for a wide range of flow conditions. Model predictions agree well with laboratory and field measurements for uniform sediments and for protrusion and relative size effects.Keywords
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