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A hybrid finite-volume/finite-difference-based one-dimensional Boussinesq model for waves attenuated by vegetation
Published in Springer International Publishing
2016
Volume: 2
   
Issue: 1
Pages: 19 - 34
Abstract
A hybrid finite-volume/finite-difference scheme is proposed to solve the one-dimensional Boussinesq equations for wave attenuation by vegetation. The effect of vegetation is included as a source term in a form of drag force. The convective part of the equations is discretized by the finite-volume method, while the finite-difference method is used to discretize the remaining terms. The variable values for the local Riemann problem at each cell face are calculated by a fourth-order MUSCL reconstruction method. The source terms and the dispersion terms are discretized using the centered finite-difference schemes up to fourth-order accuracy. The unsteady terms are discretized by the second-order MUSCL-Hancock scheme. The discretized continuity equation is solved explicitly, while the discretized momentum equation is solved using the Thomas algorithm. The developed Boussinesq model is tested with analytical solutions and reported experimental data. To further validate the model, the computed results are compared with the experimental data observed in two vegetated wave flumes. It is demonstrated that the developed model is suitable for predicting wave propagation in vegetated water bodies. © 2015, Springer International Publishing Switzerland.
About the journal
JournalData powered by TypesetJournal of Ocean Engineering and Marine Energy
PublisherData powered by TypesetSpringer International Publishing
ISSN21986444
Open AccessYes
Concepts (16)
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    Coastal engineering
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    Drag
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    Finite difference method
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    Finite volume method
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    Partial differential equations
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    Vegetation
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    Wave propagation
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    BOUSSINESQ EQUATIONS
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    CENTERED FINITE DIFFERENCES
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    Continuity equations
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    HLL RIEMANN SOLVER
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    Momentum equation
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    Reconstruction method
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    THOMAS ALGORITHM
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    Wave attenuation
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    Water waves