Risk of sediment erosion and suspension in turbulent flows

F. Lopez, M. H. Garcia

Research output: Contribution to journalArticle

Abstract

It is shown how some basic probability tools may help in the characterization of the turbulent processes involved in the mechanics of sediment transport. Both the initiation of sediment motion and the threshold for sediment suspension are analyzed in a stochastic frame of work. Isorisk curves are constructed based upon some minimum experimental information. The well-known Shields' curve is shown to correspond to an erosion risk of approximately 40%. These concepts are believed to be of importance for the design of movable-bed channels as well as for future experimental investigations, which are indeed necessary for computing the risk for higher values of the particle Reynolds number. Finally, an approximate methodology is proposed for computing the risk of erosion.

Original languageEnglish (US)
Pages (from-to)231-235
Number of pages5
JournalJournal of Hydraulic Engineering
Volume127
Issue number3
DOIs
StatePublished - Mar 1 2001
Externally publishedYes

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Water Science and Technology
  • Mechanical Engineering

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