SWASH: An operational public domain code for simulating wave fields and rapidly varied flows in coastal waters

doi:10.1016/J.COASTALENG.2011.05.015

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SWASH: An operational public domain code for simulating wave fields and rapidly varied flows in coastal waters

Journal Article•DOI•

SWASH: An operational public domain code for simulating wave fields and rapidly varied flows in coastal waters

Marcel Zijlema¹, Guus S. Stelling¹, P.B. Smit¹•Institutions (1)

Delft University of Technology¹

01 Oct 2011-Coastal Engineering (Elsevier)-Vol. 58, Iss: 10, pp 992-1012

TL;DR: In this article, a computational procedure has been developed for simulating non-hydrostatic, free-surface, rotational flows in one and two horizontal dimensions using SWASH.

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About: This article is published in Coastal Engineering.The article was published on 2011-10-01. It has received 575 citations till now. The article focuses on the topics: Swash & Surf zone.

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Journal Article•DOI•

The physical oceanography of the transport of floating marine debris

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Erik van Sebille¹, Stefano Aliani², Kara Lavender Law³, Nikolai Maximenko⁴, José M. Alsina⁵, Andrei Bagaev⁶, Andrei Bagaev⁷, Melanie Bergmann⁸, Bertrand Chapron, Irina Chubarenko⁷, Andrés Cózar⁹, Philippe Delandmeter¹, Matthias Egger, Baylor Fox-Kemper¹⁰, Shungudzemwoyo P. Garaba¹¹, Lonneke Goddijn-Murphy¹², Britta Denise Hardesty¹³, Matthew J. Hoffman¹⁴, Atsuhiko Isobe¹⁵, Cleo E. Jongedijk¹⁶, Mikael L. A. Kaandorp¹, Liliya Khatmullina⁷, Albert A. Koelmans¹⁷, Tobias Kukulka¹⁸, Charlotte Laufkötter¹⁹, Laurent Lebreton, Delphine Lobelle²⁰, Delphine Lobelle²¹, Delphine Lobelle¹, Christophe Maes²², Victor Martinez-Vicente²³, M. A. Morales Maqueda²⁴, Marie Poulain-Zarcos²⁵, Marie Poulain-Zarcos²⁶, Ernesto Rodriguez²⁷, Peter G. Ryan²⁸, Alan L. Shanks²⁹, Won Joon Shim³⁰, Giuseppe Suaria², Martin Thiel³¹, Ton S. van den Bremer³², David Wichmann¹ - Show less +38 more•Institutions (32)

Utrecht University¹, National Research Council², Sea Education Association³, University of Hawaii at Manoa⁴, Polytechnic University of Catalonia⁵, Russian Academy of Sciences⁶, Shirshov Institute of Oceanology⁷, Alfred Wegener Institute for Polar and Marine Research⁸, University of Cádiz⁹, Brown University¹⁰, University of Oldenburg¹¹, University of the Highlands and Islands¹², Hobart Corporation¹³, Rochester Institute of Technology¹⁴, Kyushu University¹⁵, Imperial College London¹⁶, Wageningen University and Research Centre¹⁷, University of Delaware¹⁸, University of Bern¹⁹, University of Southampton²⁰, National Physical Laboratory²¹, Institut de recherche pour le développement²², Plymouth Marine Laboratory²³, Newcastle University²⁴, Paul Sabatier University²⁵, University of Toulouse²⁶, California Institute of Technology²⁷, Percy FitzPatrick Institute of African Ornithology²⁸, University of Oregon²⁹, Korean Ocean Research and Development Institute³⁰, Catholic University of the North³¹, University of Oxford³²

17 Feb 2020-Environmental Research Letters

TL;DR: In this paper, the authors comprehensively discuss what is known about the different processes that govern the transport of floating marine plastic debris in both the open ocean and the coastal zones, based on the published literature and referring to insights from neighbouring fields such as oil spill dispersion, marine safety recovery, plankton connectivity, and others.

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Abstract: Marine plastic debris floating on the ocean surface is a major environmental problem. However, its distribution in the ocean is poorly mapped, and most of the plastic waste estimated to have entered the ocean from land is unaccounted for. Better understanding of how plastic debris is transported from coastal and marine sources is crucial to quantify and close the global inventory of marine plastics, which in turn represents critical information for mitigation or policy strategies. At the same time, plastic is a unique tracer that provides an opportunity to learn more about the physics and dynamics of our ocean across multiple scales, from the Ekman convergence in basin-scale gyres to individual waves in the surfzone. In this review, we comprehensively discuss what is known about the different processes that govern the transport of floating marine plastic debris in both the open ocean and the coastal zones, based on the published literature and referring to insights from neighbouring fields such as oil spill dispersion, marine safety recovery, plankton connectivity, and others. We discuss how measurements of marine plastics (both in situ and in the laboratory), remote sensing, and numerical simulations can elucidate these processes and their interactions across spatio-temporal scales.

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408 citations

Cites background from "SWASH: An operational public domain..."

...Coastal flowmodels that resolve the fast and intermittent swash flow do exist (e.g. SWASH; see Zijlema et al 2011) but often do not fully resolve the surface dynamics and vertical flow components induced by wave breaking....
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Journal Article•DOI•

Implementation of the vortex force formalism in the coupled ocean-atmosphere-wave-sediment transport (COAWST) modeling system for inner shelf and surf zone applications

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Nirnimesh Kumar¹, George Voulgaris¹, John C. Warner², Maitane Olabarrieta²•Institutions (2)

University of South Carolina¹, United States Geological Survey²

01 Jan 2012-Ocean Modelling

TL;DR: In this article, a new wave-current coupling component utilizes a depth dependent radiation stress approach and uses the vortex force formalism to simulate the effect of waves on circulation and vice versa.

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233 citations

Cites background from "SWASH: An operational public domain..."

...…pressure have been used to study propagation of shortwaves on a deep basin, internal waves and tides (Kanarska et al., 2007), internal solitary wave shoaling and breaking, lock-exchange problem (Lai et al., 2010), and wave propagation, shoaling and breaking in the surf zone (Zijlema et al., 2011)....
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Journal Article•DOI•

Depth-induced wave breaking in a non-hydrostatic, near-shore wave model

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P.B. Smit¹, Marcel Zijlema¹, Guus S. Stelling¹•Institutions (1)

Delft University of Technology¹

01 Jun 2013-Coastal Engineering

TL;DR: In this article, the authors assume a hydrostatic pressure distribution at the front of a breaking wave, which ensures that the wave front develops a vertical face and conserves mass and momentum.

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188 citations

Book•

EurOtop: Manual on wave overtopping of sea defences and related sturctures : an overtopping manual largely based on European research, but for worlwide application

[...]

J.W. Van der Meer, Nwh Allsop, Tom Bruce, Julien De Rouck, Andreas Kortenhaus, Tim Pullen, H. Schüttrumpf, Peter Troch, Barbara Zanuttigh - Show less +5 more

01 Jan 2016

177 citations

Journal Article•DOI•

Long-crested wave generation and absorption for SPH-based DualSPHysics model

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Corrado Altomare¹, José M. Domínguez², Alejandro J. C. Crespo², José González-Cao², Tomohiro Suzuki³, Moncho Gómez-Gesteira², Peter Troch¹ - Show less +3 more•Institutions (3)

Ghent University¹, University of Vigo², Delft University of Technology³

01 Sep 2017-Coastal Engineering

TL;DR: In this paper, the authors present a fully comprehensive implementation of wave generation and active wave absorption for second-order longcrested monochromatic and random waves in a WCSPH-based (Weakly Compressible Smoothed Particle Hydrodynamics) model.

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171 citations

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References

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Open Access

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Journal Article•DOI•

Volume of fluid (VOF) method for the dynamics of free boundaries

[...]

C.W Hirt¹, B. D. Nichols¹•Institutions (1)

Los Alamos National Laboratory¹

01 Jan 1981-Journal of Computational Physics

TL;DR: In this paper, the concept of a fractional volume of fluid (VOF) has been used to approximate free boundaries in finite-difference numerical simulations, which is shown to be more flexible and efficient than other methods for treating complicated free boundary configurations.

...read moreread less

11,567 citations

"SWASH: An operational public domain..." refers background in this paper

...For computational efficiency, the momentum equation (22) is not solved and the velocity u is set 15...
[...]
...(22) is replaced by u∗i+1/2 − u n−1/2 i+1/2 ∆t + u n−1/2 i+1/2 (Lxu) n−1/2 i+1/2 + ....
[...]
...(22) leads to the following additional stability condition: ∆t ≤ ∆x 2 2νt (37)...
[...]

Journal Article•DOI•

Towards the ultimate conservative difference scheme V. A second-order sequel to Godunov's method

[...]

B. van Leer

01 Jul 1979-Journal of Computational Physics

TL;DR: In this article, a second-order extension of the Lagrangean method is proposed to integrate the equations of ideal compressible flow, which is based on the integral conservation laws and is dissipative, so that it can be used across shocks.

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6,630 citations

"SWASH: An operational public domain..." refers methods in this paper

...For the test cases in this paper, the so-called MUSCL limiter (Van Leer, 1979) is employed, as given by Ψ(r) = max [ 0, min ( 2, 1 2 r + 1 2 , 2r )] (28) which has been found to give the best results....
[...]

Journal Article•DOI•

BI-CGSTAB: a fast and smoothly converging variant of BI-CG for the solution of nonsymmetric linear systems

[...]

H.A. van der Vorst

01 Mar 1992-Siam Journal on Scientific and Statistical Computing

TL;DR: Numerical experiments indicate that the new variant of Bi-CG, named Bi- CGSTAB, is often much more efficient than CG-S, so that in some cases rounding errors can even result in severe cancellation effects in the solution.

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Abstract: Recently the Conjugate Gradients-Squared (CG-S) method has been proposed as an attractive variant of the Bi-Conjugate Gradients (Bi-CG) method. However, it has been observed that CG-S may lead to a rather irregular convergence behaviour, so that in some cases rounding errors can even result in severe cancellation effects in the solution. In this paper, another variant of Bi-CG is proposed which does not seem to suffer from these negative effects. Numerical experiments indicate also that the new variant, named Bi-CGSTAB, is often much more efficient than CG-S.

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4,722 citations

"SWASH: An operational public domain..." refers methods in this paper

...We use either SIP (Stone, 1968), in the case of depth-averaged mode, or BiCGSTAB (Van der Vorst, 1992) preconditioned with an ILU, in the case of multi-layered mode, for the solution of the Poisson equation....
[...]

Journal Article•DOI•

A third-generation wave model for coastal regions: 1. Model description and validation

[...]

N. Booij, R. C. Ris, L. H. Holthuijsen

15 Apr 1999-Journal of Geophysical Research

TL;DR: In this article, a third-generation numerical wave model to compute random, short-crested waves in coastal regions with shallow water and ambient currents (Simulating Waves Nearshore (SWAN)) has been developed, implemented, and validated.

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Abstract: A third-generation numerical wave model to compute random, short-crested waves in coastal regions with shallow water and ambient currents (Simulating Waves Nearshore (SWAN)) has been developed, implemented, and validated. The model is based on a Eulerian formulation of the discrete spectral balance of action density that accounts for refractive propagation over arbitrary bathymetry and current fields. It is driven by boundary conditions and local winds. As in other third-generation wave models, the processes of wind generation, whitecapping, quadruplet wave-wave interactions, and bottom dissipation are represented explicitly. In SWAN, triad wave-wave interactions and depth-induced wave breaking are added. In contrast to other third-generation wave models, the numerical propagation scheme is implicit, which implies that the computations are more economic in shallow water. The model results agree well with analytical solutions, laboratory observations, and (generalized) field observations.

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3,625 citations

"SWASH: An operational public domain..." refers methods in this paper

...For comparison, SWAN computations have been included as no measured energy density spectra were available....
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...Although there are many expressions for the bottom friction coefficient cf , we employ the one based on Manning’s roughness coefficient n, as follows, cf = n(2)g h1/3 (10)...
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...As expected, the generation of the first superharmonic has been prevailed in the SWAN-computed spectra, while the subharmonics are completely lacked....
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...Figure 16 demonstrates the comparison of SWASH- and SWAN-computed wave spectra at different locations in the flume....
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...Furthermore, like SWAN, the software package of SWASH includes user-friendly pre- and post-processing and does not need any special libraries....
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Book•

Templates for the Solution of Linear Systems: Building Blocks for Iterative Methods

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Richard Barrett

01 Jan 1987

TL;DR: In this book, which focuses on the use of iterative methods for solving large sparse systems of linear equations, templates are introduced to meet the needs of both the traditional user and the high-performance specialist.

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Abstract: In this book, which focuses on the use of iterative methods for solving large sparse systems of linear equations, templates are introduced to meet the needs of both the traditional user and the high-performance specialist Templates, a description of a general algorithm rather than the executable object or source code more commonly found in a conventional software library, offer whatever degree of customization the user may desire

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2,976 citations

"SWASH: An operational public domain..." refers background in this paper

...(2) can be expressed as follows (Stelling and Zijlema, 2003): ζ ∫...
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...One approach suggested in the literature (Barrett et al., 1994) consists of treating the data on the subdomain interface explicitly, i.e. taking the solution from the previous time step located in the halo cells....
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...For details, see Barrett et al. (1994)....
[...]