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COASTAL BARRIER BREACHING: COMPARISON OF PHYSICAL AND NUMERICAL MODELS

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Author

Summary, in English

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.

Publishing year

2006

Language

English

Pages

2818-2830

Publication/Series

[Host publication title missing]

Document type

Conference paper

Topic

  • Water Engineering

Conference name

International Coastal on Engineering Conference, 2006

Conference date

2006-09-03 - 2006-09-08

Conference place

San Diego, California, United States

Status

Published