Please use this identifier to cite or link to this item: https://doi.org/10.3390/w9120917
Title: Propagation of solitary waves over double submerged barriers
Authors: Wu, Y.-T 
Hsiao, S.-C
Keywords: Breakwaters
Coastal engineering
Computational fluid dynamics
Energy dissipation
Experiments
Fluid dynamics
Hydrodynamics
Navier Stokes equations
Numerical models
Reflection
Solitons
Transmissions
Water waves
Dissipation coefficients
Free surface fluctuation
Hydrodynamic performance
Model-data comparisons
RANS modeling
Reynolds Averaged Navier-Stokes Equations
Submerged breakwater
Turbulence closure models
Wave transmission
breaking wave
breakwater
coastal engineering
coastal structure
dissipation
hydrodynamics
model validation
Navier-Stokes equations
numerical model
Reynolds number
seafloor
solitary wave
turbulence
water depth
wave breaking
Issue Date: 2017
Citation: Wu, Y.-T, Hsiao, S.-C (2017). Propagation of solitary waves over double submerged barriers. Water (Switzerland) 9 (12) : 917. ScholarBank@NUS Repository. https://doi.org/10.3390/w9120917
Rights: Attribution 4.0 International
Abstract: Protection of nearshore area by means of artificial structure is an important issue for coastal engineering community. In this study, we aim to investigate wave hydrodynamics and hydrodynamic performance due to solitary waves interacting with double submerged barriers. Double barriers, put bottom-mounted vertically on the flat seafloor and also paralleled to each other, are considered as a wave absorber. New experiments are carried out to provide measured data for model validation. Numerical simulations are performed using a depth- and phase-resolving model, based on the Reynolds-Averaged Navier-Stokes equations with a non-linear k-? turbulence closure model. Model-data comparisons show good agreements in terms of free surface fluctuations in time histories and error analyses are performed. Numerical results are then used to study the variations of the free surface motions of breaking waves and the flow fields. In particular, the model results reveal that the optimal horizontal distance, judged as minimum wave transmission, between two submerged barriers is approximately 2.5 times the still water depth for present wave conditions and obstacle geometries. Furthermore, numerical model is extended to evaluate the functional efficiency of a dual-slotted-barrier system with different obstacle configurations under various conditions of solitary waves by means of energy reflection, transmission and dissipation coefficients. © 2017 by the authors.
Source Title: Water (Switzerland)
URI: https://scholarbank.nus.edu.sg/handle/10635/178329
ISSN: 20734441
DOI: 10.3390/w9120917
Rights: Attribution 4.0 International
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