Study of coherent turbulent flow over the ripples using Particle Image Velocimetry

Keshavarzy, A; Ball, JE

Study of coherent turbulent flow over the ripples using Particle Image Velocimetry

Keshavarzy, A Ball, JE

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Publisher:: Taylor & Francis Group
Publication Type:: Conference Proceeding
Citation:: Proceedings Of The 12'" International Symposium On River Sedimentation - Advances in River Sediment Research, 2013, pp. 1101 - 1105
Issue Date:: 2013-01

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Field	Value	Language
dc.contributor.author	Keshavarzy, A	en_US
dc.contributor.author	Ball, JE https://orcid.org/0000-0001-8342-1916	en_US
dc.contributor.editor	al, FE	en_US
dc.date	2013-09-02	en_US
dc.date.issued	2013-01	en_US
dc.identifier.citation	Proceedings Of The 12'" International Symposium On River Sedimentation - Advances in River Sediment Research, 2013, pp. 1101 - 1105	en_US
dc.identifier.isbn	978-1-138-00062-9	en_US
dc.identifier.uri	http://hdl.handle.net/10453/27586
dc.description.abstract	The structure of turbulent flow over ripples is important to understand initiation of sediment entrainment and transport. The focus of this study is the measurement and analysis of the dominant bursting events and the flow structure over the ripples in the bed of a channel. One type of ripple with sinusoidal form was tested in this study. The velocities of flow over the ripples were measured in three dimensions using Particle Image Velocimetry (PIV). These velocities were measured at different points within the flow depth from the bed and at different longitudinal positions along the flume. It was found that upstream of the ripple crest, transition probability of stable organization (P44) were dominant when compared to other 15 transition probabilities. This can be interpreted as an expectation that entrainment should occur at this location. However, downstream of the ripple crest, transition probability of zone 2 to zone 3 (P23) and transition probability of zone 3 to 4 (P34) were more dominant than others. Therefore would be expected sedimentation to occur at this location.	en_US
dc.publisher	Taylor & Francis Group	en_US
dc.relation.ispartof	Proceedings Of The 12'" International Symposium On River Sedimentation - Advances in River Sediment Research	en_US
dc.relation.ispartof	International Symposium on River Sedimentation	en_US
dc.title	Study of coherent turbulent flow over the ripples using Particle Image Velocimetry	en_US
dc.type	Conference Proceeding
utslib.location	UK	en_US
utslib.location.activity	Tokyo, Japan	en_US
utslib.for	0905 Civil Engineering	en_US
dc.location.activity	Tokyo, Japan	en_US
pubs.embargo.period	Not known	en_US
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Civil and Environmental Engineering
pubs.organisational-group	/University of Technology Sydney/Strength - CTWW - Centre for Technology in Water and Wastewater Treatment
utslib.copyright.status	closed_access
pubs.consider-herdc	true	en_US
pubs.finish-date	2013-09-05	en_US
pubs.place-of-publication	UK	en_US
pubs.start-date	2013-09-02	en_US

Abstract:

The structure of turbulent flow over ripples is important to understand initiation of sediment entrainment and transport. The focus of this study is the measurement and analysis of the dominant bursting events and the flow structure over the ripples in the bed of a channel. One type of ripple with sinusoidal form was tested in this study. The velocities of flow over the ripples were measured in three dimensions using Particle Image Velocimetry (PIV). These velocities were measured at different points within the flow depth from the bed and at different longitudinal positions along the flume. It was found that upstream of the ripple crest, transition probability of stable organization (P44) were dominant when compared to other 15 transition probabilities. This can be interpreted as an expectation that entrainment should occur at this location. However, downstream of the ripple crest, transition probability of zone 2 to zone 3 (P23) and transition probability of zone 3 to 4 (P34) were more dominant than others. Therefore would be expected sedimentation to occur at this location.

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http://hdl.handle.net/10453/27586