Particle image velocimetry evaluation of flow-altering countermeasures for local scour around a submerged circular cylinder

Priscilla Williams; Ram Balachandar; Vesselina Roussinova; Ronald Barron

doi:10.1016/j.ijsrc.2022.03.001

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Particle image velocimetry evaluation of flow-altering countermeasures for local scour around a submerged circular cylinder

Journal article

Open access

Peer reviewed

Particle image velocimetry evaluation of flow-altering countermeasures for local scour around a submerged circular cylinder

Priscilla Williams, Ram Balachandar, Vesselina Roussinova and Ronald Barron

International journal of sediment research, Vol.37(4), pp.411-423

08/01/2022

DOI: 10.1016/j.ijsrc.2022.03.001

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Abstract

The effect of scour countermeasures on the mechanism of local scour around a cylinder requires clarification in order to develop design methodology for use in practice. Previous investigations on countermeasure performance, though useful, have not provided adequate measurements to support this understanding. In the present investigation, particle image velocimetry (PIV) measurements were acquired at several streamwise-vertical planes in the flow field surrounding a submerged circular cylinder with a vertical splitter plate and with a rectangular collar (a horizontal base plate). Analysis of the distribution of mean streamwise velocity and Reynolds shear stress as well as the scour formation indicated that the splitter plate disrupted shear layer interaction in the wake region, reducing the width of scour downstream of the cylinder by 3%. The collar eliminated scour upstream of the cylinder entirely by providing protection at the sides of the cylinder where the shear stress exceeds the critical bed shear stress, and the streamwise velocity distribution in the region between the cylinder and the channel sidewall indicated that installation of a rectangular collar causes flow separation at a point further upstream on the cylinder surface.

Hydraulic modelling

Local scour

Particle image velocimetry (PIV)

Pier scour

Scour and erosion

Scour countermeasures

Details

Title: Subtitle: Particle image velocimetry evaluation of flow-altering countermeasures for local scour around a submerged circular cylinder
Creators: Priscilla Williams - University of Windsor
Ram Balachandar - University of Windsor
Vesselina Roussinova - University of Windsor
Ronald Barron - University of Windsor
Resource Type: Journal article
Publication Details: International journal of sediment research, Vol.37(4), pp.411-423
DOI: 10.1016/j.ijsrc.2022.03.001
ISSN: 1001-6279
Publisher: Elsevier B.V
Grant note: DOI: 10.13039/501100000038, name: Natural Sciences and Engineering Research Council of Canada
Language: English
Date published: 08/01/2022
Academic Unit: Civil and Environmental Engineering
Record Identifier: 9984446070102771

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