CIRCULATION PATTERNS AND SHORELINE RESPONSE INDUCED BY SUBMERGED BREAKWATERS

Mara Villani; Judith Bosboom; Marcel Zijlema; Marcel J.F Stive

doi:10.9753/icce.v33.structures.25

No. 33 (2012), Coastal Structures

No. 33 (2012)

CIRCULATION PATTERNS AND SHORELINE RESPONSE INDUCED BY SUBMERGED BREAKWATERS

Coastal Structures

https://doi.org/10.9753/icce.v33.structures.25

Published 2012-10-15

Mara Villani⁺⁻
Judith Bosboom⁺⁻
Marcel Zijlema⁺⁻
Marcel J.F Stive⁺⁻

Mara Villani

University of Rome La Sapienza

Judith Bosboom

Delft University of Technology

Marcel Zijlema

Delft University of Technology

Marcel J.F Stive

Delft University of Technology

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Keywords

coastal defence
submerged breakwaters
coastal currents
design criterion

How to Cite

Villani, M., Bosboom, J., Zijlema, M., & Stive, M. J. (2012). CIRCULATION PATTERNS AND SHORELINE RESPONSE INDUCED BY SUBMERGED BREAKWATERS. Coastal Engineering Proceedings, 1(33), structures.25. https://doi.org/10.9753/icce.v33.structures.25

Abstract

Submerged shore-parallel breakwaters for coastal defence (henceforth SBWs) are a good compromise between the need to mitigate the effects of waves on the coast and the ambition to ensure the preservation of the landscape and water quality. However, if not properly designed, such structures can force circulation patterns that enhance shoreline erosion rather than shoreline accretion. Numerical models can be used to investigate the structure-induced circulation patterns and the resulting shoreline response. However, being computationally demanding these models are most suitable for advanced stages of the design process. The aim of this paper is to present a simple criterion to qualitatively identify whether an accretive or erosive circulation pattern can be expected in the lee of the structures. The criterion is based on analytical considerations and builds on the model presented by Bellotti (2004, 2007). It is validated against the non-hydrostatic free surface numerical model SWASH (Zijlema et al. 2011) and experiments performed by Haller et al. (2002). The validation indicates that the proposed analytical model is capable of providing a rapid first assessment of the potential shoreline response mode for SBW design.

https://doi.org/10.9753/icce.v33.structures.25

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References

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Authors retain copyright and grant the Proceedings right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this Proceedings.

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CIRCULATION PATTERNS AND SHORELINE RESPONSE INDUCED BY SUBMERGED BREAKWATERS

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