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A numerical model for offshore mound evolution

Zhang, Jie LU and Larson, Magnus LU (2020) In Journal of Marine Science and Engineering 8(3).
Abstract

A numerical model was developed to simulate the evolution of a mound placed in the offshore (i.e., outside the zone of wave breaking), exposed to varying non-breaking waves and water levels. The net sediment transport rate is assumed to be mainly dominated by bed load transport, where wave asymmetry plays an important role. The net transport over a wave cycle is expressed with reference to an equilibrium profile, which ensures model reliability and robustness. In order to validate the model, data collected at two field sites, Cocoa Beach and Perdido Key Beach in Florida, USA, were employed. The numerical results show good agreement with the measured data from the two sites in terms of the profile evolution. It demonstrates that the... (More)

A numerical model was developed to simulate the evolution of a mound placed in the offshore (i.e., outside the zone of wave breaking), exposed to varying non-breaking waves and water levels. The net sediment transport rate is assumed to be mainly dominated by bed load transport, where wave asymmetry plays an important role. The net transport over a wave cycle is expressed with reference to an equilibrium profile, which ensures model reliability and robustness. In order to validate the model, data collected at two field sites, Cocoa Beach and Perdido Key Beach in Florida, USA, were employed. The numerical results show good agreement with the measured data from the two sites in terms of the profile evolution. It demonstrates that the model has the capability to simulate the evolution of mounds placed in the offshore. In addition, several scenarios with different mound volume and location designs were investigated to indicate potential uses for the model. The results illustrate how the mound evolution is influenced by the volume and location of the mound placement.

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author
and
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Beach profile evolution, Cocoa beach, Equilibrium profile, Mound, Non-breaking waves, Offshore mound design, Perdido key beach, Wave asymmetry
in
Journal of Marine Science and Engineering
volume
8
issue
3
article number
160
publisher
MDPI AG
external identifiers
  • scopus:85082406168
ISSN
2077-1312
DOI
10.3390/jmse8030160
language
English
LU publication?
yes
id
83e1fdb3-0a46-4878-9724-4860578be9eb
date added to LUP
2021-01-12 12:15:44
date last changed
2022-04-26 23:24:26
@article{83e1fdb3-0a46-4878-9724-4860578be9eb,
  abstract     = {{<p>A numerical model was developed to simulate the evolution of a mound placed in the offshore (i.e., outside the zone of wave breaking), exposed to varying non-breaking waves and water levels. The net sediment transport rate is assumed to be mainly dominated by bed load transport, where wave asymmetry plays an important role. The net transport over a wave cycle is expressed with reference to an equilibrium profile, which ensures model reliability and robustness. In order to validate the model, data collected at two field sites, Cocoa Beach and Perdido Key Beach in Florida, USA, were employed. The numerical results show good agreement with the measured data from the two sites in terms of the profile evolution. It demonstrates that the model has the capability to simulate the evolution of mounds placed in the offshore. In addition, several scenarios with different mound volume and location designs were investigated to indicate potential uses for the model. The results illustrate how the mound evolution is influenced by the volume and location of the mound placement.</p>}},
  author       = {{Zhang, Jie and Larson, Magnus}},
  issn         = {{2077-1312}},
  keywords     = {{Beach profile evolution; Cocoa beach; Equilibrium profile; Mound; Non-breaking waves; Offshore mound design; Perdido key beach; Wave asymmetry}},
  language     = {{eng}},
  month        = {{03}},
  number       = {{3}},
  publisher    = {{MDPI AG}},
  series       = {{Journal of Marine Science and Engineering}},
  title        = {{A numerical model for offshore mound evolution}},
  url          = {{http://dx.doi.org/10.3390/jmse8030160}},
  doi          = {{10.3390/jmse8030160}},
  volume       = {{8}},
  year         = {{2020}},
}