The role of impulse on the initiation of particle movement under turbulent flow conditions.

Abstract

Fundamental to our understanding of erosional and transport phenomena in earth-surface dynamics and engineering is knowledge of the conditions under which sediment motion will begin when subjected to turbulent flow. The onset criterion currently in use emphasizes the time-averaged boundary shear stress and therefore is incapable of accounting for the… (More)
DOI: 10.1126/science.1158954

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