HOS-Ocean v2.1: extensions of a nonlinear wave solver based on the High-Order Spectral method

In this work, we report a new version of the HOS-Ocean code which is an open-source solver for deterministic nonlinear ocean wave propagation. The numerical model makes use of the so-called High-Order Spectral method, which ensures high efficiency and accuracy. This new release includes i) additional physical features such as spatially varying current and bathymetry together with dedicated models to account for wave-breaking, and ii) numerical developments with parallelization of the code through MPI as well as a more user-friendly code (pre-built binaries available, and simplified building procedure and operation). HOS-Ocean v2.1 is released as open-source, available from GitLab , developed and distributed under the terms of GNU General Public License (GPLv3). Along with the source code, detailed documentation under Sphinx format is available. Program Title: HOS-Ocean CPC Library link to program files: (to be added by Technical Editor) Developer’s repository link: https://gitlab.com/lheea/HOS-Ocean Code Ocean capsule: (to be added by Technical Editor) Licensing provisions(please choose one): GPLv3 Programming language: Fortran Supplementary material: Journal reference of previous version: Comput. Phys. Commun. 203 (2016) 245–254. Does the new version supersede the previous version?: Yes Reasons for the new version: Enhancement of capabilities and ease of use Summary of revisions: Implementation of additional physical features: spatially varying current and bathymetry, and inclusion of dedicated models to account for wave-breaking. Numerical developments with parallelization of the code through a Message Passing Interface (MPI) 1 and more user-friendly code (pre-built binaries available, and simplified building procedure and operation). Nature of problem: HOS-Ocean has been developed to study the propagation of highly nonlinear sea-states over large domains and long duration. Regular and irregular wave fields can be studied, including the effect of directionality (short-crested seas). Solution method: HOS-Ocean provides an implementation of the High-Order Spectral method, which solves the problem formulated on the free surface by means of a pseudo-spectral method. Time integration uses an adaptive Runge-Kutta 4(5) scheme. Additional comments including restrictions and unusual features: In short-crested seas, the individual treatment of wave-breaking events with the Barthelemy-Tian model 1,2 is not yet available. The simulation of directional sea states is consequently limited to non-breaking conditions with this breaking model. The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper. 1 http://www.mpi-forum.org 2 B.R. Seiffert, G. Ducrozet, F. Bonnefoy. Simulation of breaking waves using the high-order spectral method with laboratory experiments: wave-breaking onset. Ocean Modelling, 119:94–104, 2017.3B.R. Seiffert, G. Ducrozet. Simulation of breaking waves using the high-order spectral method with laboratory experiments: wave-breaking energy dissipation. Ocean Dynamics, 68(1):65–89, 2018.