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COASTAL BARRIER BREACHING: COMPARISON OF PHYSICAL AND NUMERICAL MODELS

Wamsley, Ty V.; Kraus, Nicholas C.; Larson, Magnus LU ; Hanson, Hans LU and Connell, Kenneth J. (2006) International Coastal on Engineering Conference, 2006 In [Host publication title missing] p.2818-2830
Abstract
Two movable-bed physical model experiments of breach growth in a sandy barrier were conducted in a 3.3-m wide, 64-m long flume with a wave generator capable of generating 0.5 m waves. Breaching was initiated both without waves (Case BR1) and with waves (Case BR2) in separate tests by maintaining a head across the barrier. Breach channel deepening was controlled by the head difference across the barrier. Breach widening was found to occur primarily through episodic avalanching. The avalanched material was transported by the rapid flow both along the breach channel and transverse to the flow. In the presence of waves, breach widening was accelerated and dominated by swash processes. The numerical model of Kraus and Hayashi (2005) was... (More)
Two movable-bed physical model experiments of breach growth in a sandy barrier were conducted in a 3.3-m wide, 64-m long flume with a wave generator capable of generating 0.5 m waves. Breaching was initiated both without waves (Case BR1) and with waves (Case BR2) in separate tests by maintaining a head across the barrier. Breach channel deepening was controlled by the head difference across the barrier. Breach widening was found to occur primarily through episodic avalanching. The avalanched material was transported by the rapid flow both along the breach channel and transverse to the flow. In the presence of waves, breach widening was accelerated and dominated by swash processes. The numerical model of Kraus and Hayashi (2005) was assessed through comparison to measurements. The analysis furthered understanding of breach processes and identified several enhancements to improve predictive capability of the numerical model. (Less)
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type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
in
[Host publication title missing]
pages
2818 - 2830
conference name
International Coastal on Engineering Conference, 2006
DOI
10.1142/9789812709554_0238
language
English
LU publication?
yes
id
bdfa06cc-247f-4cdb-9e28-f1a04c1104cd (old id 750515)
date added to LUP
2007-12-13 17:51:50
date last changed
2016-04-16 12:46:57
@inproceedings{bdfa06cc-247f-4cdb-9e28-f1a04c1104cd,
  abstract     = {Two movable-bed physical model experiments of breach growth in a sandy barrier were conducted in a 3.3-m wide, 64-m long flume with a wave generator capable of generating 0.5 m waves. Breaching was initiated both without waves (Case BR1) and with waves (Case BR2) in separate tests by maintaining a head across the barrier. Breach channel deepening was controlled by the head difference across the barrier. Breach widening was found to occur primarily through episodic avalanching. The avalanched material was transported by the rapid flow both along the breach channel and transverse to the flow. In the presence of waves, breach widening was accelerated and dominated by swash processes. The numerical model of Kraus and Hayashi (2005) was assessed through comparison to measurements. The analysis furthered understanding of breach processes and identified several enhancements to improve predictive capability of the numerical model.},
  author       = {Wamsley, Ty V. and Kraus, Nicholas C. and Larson, Magnus and Hanson, Hans and Connell, Kenneth J.},
  booktitle    = {[Host publication title missing]},
  language     = {eng},
  pages        = {2818--2830},
  title        = {COASTAL BARRIER BREACHING: COMPARISON OF PHYSICAL AND NUMERICAL MODELS},
  url          = {http://dx.doi.org/10.1142/9789812709554_0238},
  year         = {2006},
}