Edge scour in current adjacent to stone covers

Publication: Research - peer-reviewPaper – Annual report year: 2012

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The present paper reports some early results of an experimental investigation of edge scour in currents.
Two kinds of measurements are made (1) Particle Image Velocimetry (PIV) measurements of secondary
currents that take place near a junction between the stone cover and the sand bed in a clear-water
experiment; and (2) scour measurements in actual scour experiment in the live-bed regime.
The early results indicate that edge scour in a steady current propagating in-line with a stone layer is
caused by the combined action of two effects; (1) Primary flow and (2) Secondary flow. The primary flow
stirs up the sediment and puts into suspension, and the secondary flow carries it away from the junction
between the stone layer and the sand bed, resulting in a scour hole forming adjacent to the toe of the stone
layer.
Original languageEnglish
Publication date2012
Number of pages8
StatePublished

Conference

ConferenceICSE-6
CountryFrance
CityParis
Period27/08/1231/08/12

Bibliographical note

ICSE6-042.

Keywords

  • Edge scour, Cover stones, Steady current, Scour protection, Coastal structures, Offshore structures, Scour, Offshore wind farm
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