A numerical study on the effect of beach nourishment on wave overtopping in shallow foreshores

Title

A numerical study on the effect of beach nourishment on wave overtopping in shallow foreshores

 Author

Suzuki, T.
Verwaest, T.
Veale, W.
Trouw, K.
Zijlema, M.

Faculty

Civil Engineering and Geosciences

 Department

Hydraulic Engineering

 Date

2012-12-31

 Abstract

In this paper, the effect of beach nourishment on wave overtopping in shallow foreshores is investigated with the nonhydrostatic wave-flow model SWASH. Firstly, the applicability of SWASH to model wave overtopping is tested by comparing results with a physical model setup with different storm wall heights on top of an impermeable sea dike. The numerical results show good agreement with the physical model. After validation, sensitivity analysis of the effect of beach nourishment on wave overtopping is conducted by changing bottom configurations with the SWASH model. From the sensitivity analysis, it becomes clear that wave overtopping discharge in shallow foreshores is characterized by the bores generated in surf zone due to wave breaking. To reduce wave overtopping discharge in shallow foreshore, it is important to reduce the horizontal momentum of the bores.

 Subject

SWASH model, beach nourishment, wave overtopping, infragravity waves, bores, shallow foreshores

 To reference this document use:

http://resolver.tudelft.nl/uuid:cfcb5a27-52b4-40ae-9169-24007b45c9ff

 Publisher

Coastal Engineering Research Council

 ISSN

2156-1028

 Source

ICCE 2012: Proceedings of the 33rd International Conference on Coastal Engineering, Santander, Spain, 1-6 July 2012

 Part of collection

Institutional Repository

 Document type

conference paper

 Rights

(c) 2012 The Authors
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