COASTAL BARRIER BREACHING: COMPARISON OF PHYSICAL AND NUMERICAL MODELS

Ty V. Wamsley; Nicholas C. Kraus; Magnus Larson; Hans Hanson; Kenneth J. Connell

doi:10.1142/9789812709554_0238

COASTAL BARRIER BREACHING: COMPARISON OF PHYSICAL AND NUMERICAL MODELS

Ty V. Wamsley, Nicholas C. Kraus, Magnus Larson, Hans Hanson, Kenneth J. Connell

Division of Water Resources Engineering

Research output: Chapter in Book/Report/Conference proceeding › Paper in conference proceeding › peer-review

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.

Original language	English
Title of host publication	[Host publication title missing]
Pages	2818-2830
DOIs	https://doi.org/10.1142/9789812709554_0238
Publication status	Published - 2006
Event	International Coastal on Engineering Conference, 2006 - San Diego, California, United States Duration: 2006 Sept 3 → 2006 Sept 8 Conference number: 30

Conference

Conference	International Coastal on Engineering Conference, 2006
Country/Territory	United States
City	San Diego, California
Period	2006/09/03 → 2006/09/08

Subject classification (UKÄ)

Water Engineering

Access to Document

10.1142/9789812709554_0238

Cite this

@inproceedings{bdfa06cc247f4cdb9e28f1a04c1104cd,

title = "COASTAL BARRIER BREACHING: COMPARISON OF PHYSICAL AND NUMERICAL MODELS",

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 Magnus Larson and Hans Hanson and Connell, {Kenneth J.}",

year = "2006",

doi = "10.1142/9789812709554_0238",

language = "English",

pages = "2818--2830",

booktitle = "[Host publication title missing]",

note = "International Coastal on Engineering Conference, 2006 ; Conference date: 03-09-2006 Through 08-09-2006",

}

TY - GEN

T1 - COASTAL BARRIER BREACHING: COMPARISON OF PHYSICAL AND NUMERICAL MODELS

AU - Wamsley, Ty V.

AU - Kraus, Nicholas C.

AU - Larson, Magnus

AU - Hanson, Hans

AU - Connell, Kenneth J.

N1 - Conference code: 30

PY - 2006

Y1 - 2006

N2 - 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.

AB - 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.

U2 - 10.1142/9789812709554_0238

DO - 10.1142/9789812709554_0238

M3 - Paper in conference proceeding

SP - 2818

EP - 2830

BT - [Host publication title missing]

T2 - International Coastal on Engineering Conference, 2006

Y2 - 3 September 2006 through 8 September 2006

ER -

COASTAL BARRIER BREACHING: COMPARISON OF PHYSICAL AND NUMERICAL MODELS

Abstract

Conference

Subject classification (UKÄ)

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