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A numerical study on the effect of beach nourishment on wave overtopping in shallow foreshores
Suzuki, T.; Verwaest, T.; Veale, W.; Trouw, K.; Zijlema, M. (2012). A numerical study on the effect of beach nourishment on wave overtopping in shallow foreshores, in: International Conference on Coastal Engineering (ICCE 2012), Santander, Spain, July 1-6 2012: book of papers. pp. [1-13]
In: (2012). International Conference on Coastal Engineering (ICCE 2012), Santander, Spain, July 1-6 2012: book of papers. Coastal Engineering Research Council of the American Society of Civil Engineers: Reston. , meer

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Documenttype: Congresbijdrage

Trefwoorden
    Bores; Golfoverslag; Strandsuppletie; Marien
Author keywords
    Infragravity waves; Bores; Shallow foreshores

Auteurs  Top 
  • Trouw, K., meer
  • Zijlema, M.

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.

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