Orateur : Matthieu Ancelin
Linear potential flow simulation of wave energy converters
The linear potential flow model is one of the simplest models available
to describe the interaction between water waves and a floating body, for
example for the design of Wave Energy Converters (WECs).
It takes the form of a Laplace equation that can be solved numerically
using the Boundary Elements Method (BEM).
The main goal of the present work is the assessment and the enhancement
of the only open source BEM solver for linear potential flow: Nemoh,
released in 2014 by the École Centrale de Nantes .
Most of the theory and implementation of this code dates back from the
1970s and 1980s and it would benefit from newer techniques and tools.
To this end, a new more modular and better documented implementation of
the code has been published as a Python package .
It allows to test more advanced methods to improve the performance of
the code, such as Hierarchical Matrices or their combination with the
local symmetries of the body.
Finally, some examples of applications to WECs will be briefly presented
 Babarit and Delhommeau, Theoretical and numerical aspects of the
open source BEM solver NEMOH, Proceedings of the 11th European Wave and
Tidal Energy Conference (EWTEC 2015).
 Ancellin and Dias, Capytaine: a Python-based linear potential flow
solver, Journal of Open Source Software, 4(36), 1341, 2019
 Ancellin et al., Far-field maximal power absorption of a bulging
cylindrical wave energy converter: preliminary numerical results, Actes
des Journées de l'Hydrodynamique, 2018.