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

Fingerprint

turbulent flow
Turbulent flow
Erosion
Sediments
erosion
sediment
Sediment transport
Reynolds number
mechanics
sediment transport
shield
Mechanics
methodology

ASJC Scopus subject areas

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

Cite this

Risk of sediment erosion and suspension in turbulent flows. / Lopez, F.; Garcia, M. H.

In: Journal of Hydraulic Engineering, Vol. 127, No. 3, 01.03.2001, p. 231-235.

Research output: Contribution to journalArticle

@article{30027d02dee345a38bd1210a20a54db8,
title = "Risk of sediment erosion and suspension in turbulent flows",
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.",
author = "F. Lopez and Garcia, {M. H.}",
year = "2001",
month = "3",
day = "1",
doi = "10.1061/(ASCE)0733-9429(2001)127:3(231)",
language = "English (US)",
volume = "127",
pages = "231--235",
journal = "Journal of Hydraulic Engineering",
issn = "0733-9429",
publisher = "American Society of Civil Engineers (ASCE)",
number = "3",

}

TY - JOUR

T1 - Risk of sediment erosion and suspension in turbulent flows

AU - Lopez, F.

AU - Garcia, M. H.

PY - 2001/3/1

Y1 - 2001/3/1

N2 - 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.

AB - 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.

UR - http://www.scopus.com/inward/record.url?scp=0035278356&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0035278356&partnerID=8YFLogxK

U2 - 10.1061/(ASCE)0733-9429(2001)127:3(231)

DO - 10.1061/(ASCE)0733-9429(2001)127:3(231)

M3 - Article

AN - SCOPUS:0035278356

VL - 127

SP - 231

EP - 235

JO - Journal of Hydraulic Engineering

JF - Journal of Hydraulic Engineering

SN - 0733-9429

IS - 3

ER -