Post-doctoral researcher in applied mathematics.

Research interests

My field of research is computational fluid dynamics (in the broad sense of simulating fluids by numerically solving partial differential equations) for multiphase flows and free-surface flows.

I’m currently working on the numerical simulation of wave energy converters using linear potential flow models with the boundary elements method (BEM) solver Nemoh. My Python-based refactored version of Nemoh is available online (source code, documentation).

Previously I worked on the numerical simulation of wave impacts with phase change, using finite volume schemes for conservative and non-conservative hyperbolic problems. This work was applied to the study of sloshing in floating LNG tanks.

Publications and talks

Journal articles

2019, Numerical simulation of wave impacts with interfacial phase change: An interface reconstruction scheme
Matthieu Ancellin, Laurent Brosset and Jean-Michel Ghidaglia
European Journal of Mechanics - B/Fluids, 76::352–364
DOI: 10.1016/j.euromechflu.2019.03.008Accepted manuscript

2018, Numerical simulation of wave impacts with interfacial phase change: An isothermal averaged model
Matthieu Ancellin, Laurent Brosset and Jean-Michel Ghidaglia
European Journal of Mechanics - B/Fluids, 72::631–644
DOI: 10.1016/j.euromechflu.2018.08.001Accepted manuscript

Software

2019, Capytaine: a Python-based linear potential flow solver
Matthieu Ancellin and Frederic Dias
Journal of Open Source Software, 4(36)::1341
DOI: 10.21105/joss.01341Open Access logo PaperSoftware source codeSoftware documentation

Conference proceedings

2018, Far field maximal power absorption of a bulging cylindrical wave energy converter: preliminary numerical results
Matthieu Ancellin, Aurélien Babarit, Philippe Jean and Frédéric Dias
in Actes des Journées de l'Hydrodynamique 2018
Open Access logo PaperSlides

2018, Using the floating body symmetries to speed up the numerical computation of hydrodynamics coefficients with Nemoh
Matthieu Ancellin and Frédéric Dias
in ASME 2018 37th International Conference on Ocean, Offshore and Arctic Engineering (OMAE2018), V009T13A031
DOI: 10.1115/OMAE2018-77924

2018, Numerical study of phase change influence on wave impact loads in LNG tanks on floating structures
Matthieu Ancellin, Laurent Brosset and Jean-Michel Ghidaglia
in ASME 2018 37th International Conference on Ocean, Offshore and Arctic Engineering (OMAE2018), V009T13A026
DOI: 10.1115/OMAE2018-78643

2018, A hyperbolic model of nonequilibrium phase change at a sharp liquid–vapor interface
Matthieu Ancellin, Laurent Brosset and Jean-Michel Ghidaglia
in Theory, Numerics and Applications of Hyperbolic Problems I (Hyp2016), 59–69
DOI: 10.1007/978-3-319-91545-6_5

2016, Preliminary numerical results on the influence of phase change on wave impact loads
Matthieu Ancellin, Laurent Brosset and Jean-Michel Ghidaglia
in Proc. 26th Int. Offshore and Polar Eng. Conf. (ISOPE 2016), 3::886–893

2012, Influence of phase transition on sloshing impact pressures described by a generalized Bagnold's model
Matthieu Ancellin, Laurent Brosset and Jean-Michel Ghidaglia
in Proc. 22nd Int. Offshore and Polar Eng. Conf. (ISOPE 2012), 3::300–310

Some other recent talks

2019, Linear potential flow simulation of wave energy converters with an open source BEM solver
in emrsim2019 : Simulation et Optimisation pour les Énergies Marines Renouvelables, Roscoff, 2nd-4th July 2019

2019, Far field maximal power absorption of a bulging cylindrical wave energy converter
in Hywec 2: the Hydrodynamics of Wave Energy Converters, Université de Bordeaux, 18-20th June 2018
Slides

2019, On the phase-change interface conditions for violent separated two-phase flows
in IUTAM Symposium on computational modelling of instabilities and turbulence in separated two-phase flows, University College Dublin, 10-12th June 2019

2019, Optimization of a hinge-barge wave energy converter in the BenchWEC project
with LiGuo Wang and Brian Flannery
in 10th Marine Renewables Emerging Technologies Industry Forum, Dublin, 1st February 2019

2018, Recent developments of the linear potential flow solver Nemoh and its application for the design of wave energy converters
in Symposium of the International Association for Boundary Elements Methods (IABEM 2018), Université Pierre-et-Marie Curie Paris 6, 27th June 2018

2018, Utilisation des symétries pour l’accélération du code potentiel linéaire Nemoh
in Simulation et Optimisation pour les Energies Marines Renouvelables (emrsim 2018), 11 janvier 2018
Slides

2017, On the dimensionless parameters governing some extended Bagnold models
in 17th International Workshop on Trends in Numerical and Physical Modeling of Industrial Multiphase Flows (MULTIPHASE 2017), ENS Paris-Saclay, 18th October 2017
Slides

Previous experiences

2014 — 2017
PhD in applied mathematics, École Normale Supérieure Paris-Saclay, Cachan, France.
Sur la modélisation physique et numérique du changement de phase interfacial lors d’impacts de vagues,
Mémoire (en français). Slides of the defense (in English).
Research engineer, Gaztransport & Technigaz, Saint-Rémy-lès-Chevreuse, France.
2011 — 2013
Master in applied mathematics, Technical University of Vienna, Austria.
Master thesis: On the regularity of the linear Wigner-Fokker-Planck equation (pdf).
2009 — 2011
Engineering graduate student, École Centrale Paris, France.
2009 — 2010
Bachelor in theoretical physics, Université Paris-Sud 11, Orsay, France.

matthieu.ancellin à ucd.ie

ORCID iD iconorcid.org/0000-0002-0316-3230

Scopus ID: 55356014000