Vortex tubes in the wave bottom boundary layer

M.  Henriquez; A.J.H.M. Reniers; B. Gerben Ruessink; M.J.F. Stive

doi:10.3990/2.185

Vortex tubes in the wave bottom boundary layer

M. Henriquez
, A.J.H.M. Reniers
, B. Gerben Ruessink
, M.J.F. Stive

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Academic › peer-review

44 Downloads (Pure)

Abstract

The cause of sediment suspension events during flow reversal under waves in the nearshore is not well understood. Vortex tubes and horizontal pressure gradients have been suggested to be the cause of the suspension events. A medium sized wave flume experiment has been conducted to give insight in the hydrodynamics of the wave bottom boundary layer over a fixed single-barred profile. Flow measurements were made with PIV and the swirling strength of the velocity fields were analyzed. Around flow reversal vortex tubes were identified. The vortex tubes had similar size and swirling strength as vortices generated by vortex shedding over a rippled bed. Therefore, vortex tubes under waves in the nearshore could explain the sediment suspension events around flow reversal.

Original language	English
Title of host publication	Jubilee Conference Proceedings NCK-days 2012
Subtitle of host publication	Crossing borders in coastal research
Editors	W.M. Kranenburg, E.M. Horstman, K.M. Wijnberg
Publisher	University of Twente
Number of pages	4
ISBN (Print)	978-90-365-3342-3
DOIs	https://doi.org/10.3990/2.185
Publication status	Published - 2012
Externally published	Yes
Event	NCK-Days 2012: Crossing borders in coastal research - Enschede, Netherlands Duration: 13 Mar 2012 → 16 Mar 2012

Conference

Conference	NCK-Days 2012
Country/Territory	Netherlands
City	Enschede
Period	13/03/12 → 16/03/12

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10.3990/2.185

Henriquez12vortexFinal published version, 436 KB

Jubilee Conference Proceedings NCK-days 2012: Crossing borders in coastal research
Kranenburg, W. M. (Editor), Horstman, E. M. (Editor) & Wijnberg, K. M. (Editor), 2012, Enchede: University of Twente. 256 p.
Research output: Book/Report › Book editing › Popular

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597 Downloads (Pure)

Cite this

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title = "Vortex tubes in the wave bottom boundary layer",

abstract = "The cause of sediment suspension events during flow reversal under waves in the nearshore is not well understood. Vortex tubes and horizontal pressure gradients have been suggested to be the cause of the suspension events. A medium sized wave flume experiment has been conducted to give insight in the hydrodynamics of the wave bottom boundary layer over a fixed single-barred profile. Flow measurements were made with PIV and the swirling strength of the velocity fields were analyzed. Around flow reversal vortex tubes were identified. The vortex tubes had similar size and swirling strength as vortices generated by vortex shedding over a rippled bed. Therefore, vortex tubes under waves in the nearshore could explain the sediment suspension events around flow reversal.",

author = "M. Henriquez and A.J.H.M. Reniers and Ruessink, \{B. Gerben\} and M.J.F. Stive",

year = "2012",

doi = "10.3990/2.185",

language = "English",

isbn = "978-90-365-3342-3",

editor = "W.M. Kranenburg and E.M. Horstman and K.M. Wijnberg",

booktitle = "Jubilee Conference Proceedings NCK-days 2012",

publisher = "University of Twente",

address = "Netherlands",

note = "NCK-Days 2012 : Crossing borders in coastal research ; Conference date: 13-03-2012 Through 16-03-2012",

}

Vortex tubes in the wave bottom boundary layer. / Henriquez, M. ; Reniers, A.J.H.M.; Ruessink, B. Gerben et al.
Jubilee Conference Proceedings NCK-days 2012: Crossing borders in coastal research. ed. / W.M. Kranenburg; E.M. Horstman; K.M. Wijnberg. University of Twente, 2012.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Academic › peer-review

TY - GEN

T1 - Vortex tubes in the wave bottom boundary layer

AU - Henriquez, M.

AU - Reniers, A.J.H.M.

AU - Ruessink, B. Gerben

AU - Stive, M.J.F.

PY - 2012

Y1 - 2012

N2 - The cause of sediment suspension events during flow reversal under waves in the nearshore is not well understood. Vortex tubes and horizontal pressure gradients have been suggested to be the cause of the suspension events. A medium sized wave flume experiment has been conducted to give insight in the hydrodynamics of the wave bottom boundary layer over a fixed single-barred profile. Flow measurements were made with PIV and the swirling strength of the velocity fields were analyzed. Around flow reversal vortex tubes were identified. The vortex tubes had similar size and swirling strength as vortices generated by vortex shedding over a rippled bed. Therefore, vortex tubes under waves in the nearshore could explain the sediment suspension events around flow reversal.

AB - The cause of sediment suspension events during flow reversal under waves in the nearshore is not well understood. Vortex tubes and horizontal pressure gradients have been suggested to be the cause of the suspension events. A medium sized wave flume experiment has been conducted to give insight in the hydrodynamics of the wave bottom boundary layer over a fixed single-barred profile. Flow measurements were made with PIV and the swirling strength of the velocity fields were analyzed. Around flow reversal vortex tubes were identified. The vortex tubes had similar size and swirling strength as vortices generated by vortex shedding over a rippled bed. Therefore, vortex tubes under waves in the nearshore could explain the sediment suspension events around flow reversal.

U2 - 10.3990/2.185

DO - 10.3990/2.185

M3 - Conference contribution

SN - 978-90-365-3342-3

BT - Jubilee Conference Proceedings NCK-days 2012

A2 - Kranenburg, W.M.

A2 - Horstman, E.M.

A2 - Wijnberg, K.M.

PB - University of Twente

T2 - NCK-Days 2012

Y2 - 13 March 2012 through 16 March 2012

ER -

Vortex tubes in the wave bottom boundary layer

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Jubilee Conference Proceedings NCK-days 2012: Crossing borders in coastal research

Cite this