Methods olaflow
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\documentclass[a4paper, twocolumn]{article}
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\documentclass[a4paper, twocolumn, draft]{article}
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\usepackage{polyglossia} \usepackage{authblk}
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\usepackage[sfdefault]{inter}
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\usepackage{graphicx}
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\usepackage[hmargin=2.1cm, vmargin=2.97cm]{geometry}
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\usepackage{hyperref}
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\setmainlanguage{english}
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]{biblatex}
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\bibliography{library}
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\hypersetup{
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pdftitle={Analysis of the displacement of a large concrete block under an extreme wave},
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pdfauthor={Edgar P. Burkhart}
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}
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\title{Analysis of the displacement of a large concrete block under an extreme wave}
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\author[1]{Edgar P. Burkhart}
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\author[*,1]{Stéphane Abadie}
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@ -261,11 +267,40 @@ shorewards boundary to prevent wave reflection on the boundary. In the reflectio
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generated using the wave spectrum extracted from buoy data during the storm. The raw vertical surface elevation
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measured by the wave buoy was used in a second part.
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\subsection{Olaflow model}
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\subsubsection{Domain}
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A 150m long domain is built in order to obtain the hydrodynamic conditions on the Artha breakwater during the passage
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of the identified extreme wave. The bathymetry with 50cm resolution from \textcite{poncet2021} is used. The domain
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extends 30m up in order to be able to capture the largest waves hitting the breakwater. Measurements are extracted 20m
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shorewards from the breakwater crest. The domain is displayed in Figure~\ref{fig:of}.
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A mesh in two-vertical dimensions with 20cm resolution was generated using the interpolated bathymetry. As with the
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SWASH model, the porous armour was considered at a macroscopic scale.
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\begin{figure*}
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\centering
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\includegraphics{fig/aw_t0.pdf}
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\caption{Domain studied with Olaflow. Initial configuration.}\label{fig:of}
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\end{figure*}
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\subsubsection{Model}
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A volume-of-fluid (VOF) model in two-vertical dimensions based on volume-averaged Reynolds-averaged Navier-Stokes
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(VARANS) equations is used (olaFlow, \cite{higuera2015}). The model was initially setup using generic values for
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porous breakwater studies. A sensibility study conducted on the porosity parameters found a minor influence of these
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values on the final results.
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The k-ω SST turbulence model was used, as it produced much more realistic results than the default k-ε model,
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especially compared to the photographs from the storm of February 28, 2017. The k-ε model yielded very high viscosity
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and thus strong dissipation in the entire domain, preventing an accurate wave breaking representation.
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\subsubsection{Boundary conditions}
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Initial and boundary conditions were generated using the output from the SWASH wave transformation model. The boundary
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condition is generated by a paddle-like wavemaker, using the water level and depth-averaged velocity computed by the
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SWASH model.
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\printbibliography
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\end{document}
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