Edge scour in current adjacent to stone covers

Thor Ugelvig Petersen; B. Mutlu Sumer; Knud Erik Meyer; Jørgen Fredsøe; Erik Damgaard Christensen

Edge scour in current adjacent to stone covers

Thor Ugelvig Petersen, B. Mutlu Sumer, Knud Erik Meyer, Jørgen Fredsøe, Erik Damgaard Christensen

Research output: Contribution to conference › Paper › Research › peer-review

Abstract

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 language	English
Publication date	2012
Number of pages	8
Publication status	Published - 2012
Event	ICSE-6: 6th International Conference on Scour and Erosion - Paris, France Duration: 27 Aug 2012 → 31 Aug 2012

Conference

Conference	ICSE-6
Country/Territory	France
City	Paris
Period	27/08/2012 → 31/08/2012

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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title = "Edge scour in current adjacent to stone covers",

abstract = "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 secondarycurrents that take place near a junction between the stone cover and the sand bed in a clear-waterexperiment; 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 iscaused by the combined action of two effects; (1) Primary flow and (2) Secondary flow. The primary flowstirs up the sediment and puts into suspension, and the secondary flow carries it away from the junctionbetween the stone layer and the sand bed, resulting in a scour hole forming adjacent to the toe of the stonelayer.",

keywords = "Edge scour, Cover stones, Steady current, Scour protection, Coastal structures, Offshore structures, Scour, Offshore wind farm",

author = "Petersen, {Thor Ugelvig} and Sumer, {B. Mutlu} and Meyer, {Knud Erik} and J{\o}rgen Freds{\o}e and Christensen, {Erik Damgaard}",

note = "ICSE6-042.; ICSE-6 : 6th International Conference on Scour and Erosion ; Conference date: 27-08-2012 Through 31-08-2012",

year = "2012",

language = "English",

}

TY - CONF

T1 - Edge scour in current adjacent to stone covers

AU - Petersen, Thor Ugelvig

AU - Sumer, B. Mutlu

AU - Meyer, Knud Erik

AU - Fredsøe, Jørgen

AU - Christensen, Erik Damgaard

N1 - ICSE6-042.

PY - 2012

Y1 - 2012

N2 - 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 secondarycurrents that take place near a junction between the stone cover and the sand bed in a clear-waterexperiment; 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 iscaused by the combined action of two effects; (1) Primary flow and (2) Secondary flow. The primary flowstirs up the sediment and puts into suspension, and the secondary flow carries it away from the junctionbetween the stone layer and the sand bed, resulting in a scour hole forming adjacent to the toe of the stonelayer.

AB - 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 secondarycurrents that take place near a junction between the stone cover and the sand bed in a clear-waterexperiment; 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 iscaused by the combined action of two effects; (1) Primary flow and (2) Secondary flow. The primary flowstirs up the sediment and puts into suspension, and the secondary flow carries it away from the junctionbetween the stone layer and the sand bed, resulting in a scour hole forming adjacent to the toe of the stonelayer.

KW - Edge scour

KW - Cover stones

KW - Steady current

KW - Scour protection

KW - Coastal structures

KW - Offshore structures

KW - Scour

KW - Offshore wind farm

M3 - Paper

T2 - ICSE-6

Y2 - 27 August 2012 through 31 August 2012

ER -

Edge scour in current adjacent to stone covers

Abstract

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Bibliographical note

Keywords

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