Simulations of floating wave energy devices using adaptive mesh refinement
Paper in proceedings, 2018

CFD simulations of floating wave energy converters are computationally very heavy. This paper deals with a straightforward attempt to cut down on the computational effort by using adaptive mesh refinement (AMR). We investigate the use of AMR for simulations involving floating bodies inside the open-source finite volume framework OpenFOAM. A simple error indicator based on the pressure jump over cell faces is used to drive the AMR. First the use of the error indicator is illustrated for propagation of a very steep stream function wave. Then the AMR technique is applied to two cases of floating bodies: (i) a floating box and (ii) a bottom reacting point-absorber. As expected the AMR significantly reduce the number of cells in the computational meshes and subsequently lower the computational effort.

Adaptive mesh refinement

Wave energy

OpenFOAM

Author

Claes Eskilsson

Aalborg University

Johannes Palm

Chalmers, Mechanics and Maritime Sciences, Marine Technology

Advances in Renewable Energies Offshore, Proceedings of the 3rd International Conference on Renewable Energies Offshore (RENEW 2018)

2638-647x (ISSN) 2638-6461 (eISSN)

431-438

Renewable Energies Offshore
Lissabon, Portugal,

Including Nonlinear and Viscous Effects when Modelling the Performance of Wave Energy Converters

Swedish Energy Agency, 2015-08-01 -- 2017-02-28.

Driving Forces

Sustainable development

Subject Categories

Computational Mathematics

Fluid Mechanics and Acoustics

Marine Engineering

Areas of Advance

Energy

Infrastructure

C3SE (Chalmers Centre for Computational Science and Engineering)

More information

Latest update

11/5/2018