Surface Roller Modeling for Mean Longshore Current over a Barred Beach in a Random Wave Environment
- Authors
- Choi, Junwoo; Lee, Jong-In; Yoon, Sung Bum
- Issue Date
- Sep-2012
- Publisher
- Coastal Education & Research Foundation, Inc.
- Keywords
- Numerical simulation; SHORECIRC; SWAN; field experiment; laboratory experiment; SandyDuck
- Citation
- Journal of Coastal Research, v.28, no.5, pp 1100 - 1120
- Pages
- 21
- Indexed
- SCI
SCIE
SCOPUS
- Journal Title
- Journal of Coastal Research
- Volume
- 28
- Number
- 5
- Start Page
- 1100
- End Page
- 1120
- URI
- https://scholarworks.bwise.kr/erica/handle/2021.sw.erica/32163
- DOI
- 10.2112/JCOASTRES-D-10-00151.1
- ISSN
- 0749-0208
1551-5036
- Abstract
- The effect of surface roller on mean longshore current, which depends strongly on the wave-breaking process, was investigated by applying various surface-roller models to a random wave-induced current-model system, incorporating a nearshore circulation model, SHORECIRC, and a random wave model, SWAN. The investigation was performed based on simulations of the SandyDuck field experiments, employing observed wave spectra and two-dimensional topography. The topography is characterized as a longshore variation caused by scouring because of bridge piers and a barred beach on a steep foreshore slope linked to a relatively broad bar formation on a seaward gentle slope. The experimental data show that before the waves intensely broke from a decrease in water depth on the steep slope, some partial breaking of random waves occurred in the wave-breaking process. The chosen surface-roller model was modified using the classification of the partial wave-breaking and intense wave-breaking regions. The mean longshore currents simulated using the modified surface-roller model was compared with the measurements as well as the results from the simulations using conventional surface-roller models. The modified simulations agreed with the measurements better than did those of the simulations.
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Collections - COLLEGE OF ENGINEERING SCIENCES > DEPARTMENT OF CIVIL AND ENVIRONMENTAL ENGINEERING > 1. Journal Articles
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