A Three-Dimensional Numerical Simulation of Wave and Current Evolving Over a Submerged Shoal
- Authors
- Choi, Junwoo; Yoon, Sung Bum
- Issue Date
- Jun-2011
- Publisher
- Taylor & Francis
- Keywords
- Wave transformation; submerged elliptic shoal; wave-induced current; RANS equation model; VOF model; FLUENT
- Citation
- Coastal Engineering Journal, v.53, no.2, pp 63 - 85
- Pages
- 23
- Indexed
- SCIE
SCOPUS
- Journal Title
- Coastal Engineering Journal
- Volume
- 53
- Number
- 2
- Start Page
- 63
- End Page
- 85
- URI
- https://scholarworks.bwise.kr/erica/handle/2021.sw.erica/37425
- DOI
- 10.1142/S0578563411002306
- ISSN
- 2166-4250
1793-6292
- Abstract
- A three-dimensional numerical simulation of time-averaged wave-induced currents was performed, its results were compared with the results of adepth-integrated Boussinesq equation model And the differences were discussed in terms of wave height, instantaneous and mean free surface elevations, mean and time-averaged velocity fields, and turbulence parameters. For the three-dimensional simulation, an internal wave generation and a wave-absorbing sponge layer scheme,which can eliminate the influence of waves reflected from the wave source and wall boundaries toward the domain, were applied to the RANS equation model in a CFD code named FLUENT and the VOF model was utilized for the water surface In this study, two experiments involving wave-induced flows were simulated. First, to examine the wave-induced flows computed by the present model, we performed an existing two-dimensional experiment in which time-averaged mean motions induced by wave breaking were measured on a constant slope. Second,the breaking monochromatic wave case of Vincent and Briggs' experiments [Vincent and Briggs, 1989] was simulated in three dimensions using the present model. The experimental case presented a three-dimensional phenomenon in which a wave-induced jet-like current was generated and influenced the (w)ave transformation over an elliptical submerged shoal. The computations agreed with the measurements and showed vertical distributions of the wave-induced currents over the shoal.
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