Dr. Nicolas Desmars

Bio: Nicolas Desmars graduated his master of engineering from ICAM Nantes, France, in 2015 and his master of science in hydrodynamics and ocean engineering from École Centrale de Nantes (ECN) in 2016. After focusing on ocean wave energy conversion during his master thesis, conducted at the Theoretical and Applied Fluid Dynamics Laboratory at the University of California, Berkeley, he started working within the LHEEA Research Department at ECN where he obtained his PhD entitled «Real-time reconstruction and prediction of ocean wave fields from remote optical measurements» in 2020 (manuscript available here). Today, Nicolas continues to work on the topic of the prediction of ocean waves within the Offshore Dynamics Group at Hamburg University of Technology as a postdoctoral researcher.

Research: Nicolas’ research activities focus on free-surface hydrodynamics applied to ocean engineering problems. In particular, his interests include nonlinear water-wave mechanics and deterministic (i.e., phase-resolved) prediction ocean wave fields.In view of the real-time application of deterministic prediction algorithms, he is now investigating fast numerical methods for the correct initialization of nonlinear wave models from remote measurements of the ocean surface dynamics. The considered modeling methods range from weakly nonlinear approaches (e.g., perturbative expansion in a Lagrangian framework) to fully nonlinear ones (e.g., High-Order Spectral method). Nicolas’ current studies take part in the EproBOSS project which aims at developing a system for the real-time prediction of the motion of offshore structures in waves from X-band marine radar measurements.

 

ResearchGateimage/svg+xmlResearchGateResearchGate

ResearchGate

Google Scholarimage/svg+xmlGoogle ScholarGoogle Scholar

Google Scholar

E-Mail

N. Desmars, M. Hartmann, J. Behrendt, M. Klein, and N. Hoffmann, Reconstruction of Ocean Surfaces from Randomly Distributed Measurements Using a Grid-Based Method, Proceedings of the ASME 2021 Fortieth International Conference on Ocean, Offshore and Arctic Engineering, June 2021

H. Lünser, M. Hartmann, N. Desmars, J. Behrendt, N. Hoffmann and M. Klein, Influence of Sea State Parameters on the Accuracy of Wave Simulations of Different Complexity, Proceedings of the ASME 2021 Fortieth International Conference on Ocean, Offshore and Arctic Engineering, June 2021

N. Desmars, F. Bonnefoy, S. T. Grilli, G. Ducrozet, Y. Perignon, C.-A. Guérin and P. Ferrant, Experimental and Numerical Qualification of Deterministic Nonlinear Ocean Waves Prediction Algorithms Using Non-Uniformly Sampled Probes Data, Ocean Engineering, Volume 212, September 2020, pages 107659, doi: 10.1016/j.oceaneng.2020.107659

C.-A. Guérin, N. Desmars, S. T. Grilli, G. Ducrozet, Y. Perignon and P. Ferrant, An Improved Lagrangian Model for the Time Evolution of Nonlinear Surface Waves, Journal of Fluid Mechanics, Volume 876, August 2019, pages 527-552, doi: 10.1017/jfm.2019.519

N. Desmars, Y. Perignon, G. Ducrozet, C.-A. Guérin, S. T. Grilli and P. Ferrant, Phase-Resolved Prediction of Nonlinear Ocean Wave Fields from Remote Optical Measurements, Proceedings of the Sixteenth Journées de l’Hydrodynamique, Marseille, November 2018

N. Desmars, J. Tchoufag, D. Younesian and M.-R. Alam, Interaction of Surface Waves with an Actuated Flexible Plate: Optimization for Energy Extraction, Journal of Fluids and Structures, Volume 81, August 2018, pages 673-692, doi: 10.1016/j.jfluidstructs.2018.05.016

N. Desmars, Y. Perignon, G. Ducrozet, C.-A. Guérin, S. T. Grilli and P. Ferrant, Phase-Resolved Reconstruction Algorithm and Deterministic Prediction of Nonlinear Ocean Waves from Spatio-Temporal Optical Measurements, Proceedings of the ASME 2018 Thirty-Seventh International Conference on Ocean, Offshore and Arctic Engineering, Madrid, June 2018, doi: 10.1115/OMAE2018-78367

Free-surface hydrodynamics; Water waves; Wave-structure interaction; Deterministic prediction; Inverse problems; Marine energy systems