Applicability of linear and non-linear potential flow models on a Wavestar float

Pauline Bozonnet, Victor Dupin, Paolino Tona, Morten Mejlhede Kramer, Camille Chauvigné

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

Abstract

Numerical models based on potential flow theory, including different types of nonlinearities are compared and validated against experimental data for the Wavestar wave energy converter technology. Exact resolution of the rotational motion, non-linear hydrostatic and Froude-Krylov forces as well as a model based on non-linear potential flow theory and weakscatterer hypothesis are successively considered. Simple tests, such as dip tests, decay tests and captive tests enable to highlight the improvements obtained with the introduction of nonlinearities. Float motion under wave actions and without control action, limited to small amplitude motion with a single float, is well predicted by the numerical models, including the linear one. Still, float velocity is better predicted by accounting for non-linear hydrostatic and Froude-Krylov forces.
Original languageEnglish
Title of host publication12th EWTEC - Proceedings of the 12th European Wave and Tidal Energy Conference : 27th Aug -1st Sept 2017, Cork, Ireland
Number of pages10
PublisherTechnical Committee of the European Wave and Tidal Energy Conference
Publication date2017
Article number646
Publication statusPublished - 2017
Event12th European Wave and Tidal Energy Conferenc - Cork, Ireland
Duration: 27 Aug 20171 Sep 2017
Conference number: 12

Conference

Conference12th European Wave and Tidal Energy Conferenc
Number12
CountryIreland
CityCork
Period27/08/201701/09/2017
SeriesEuropean Wave and Tidal Energy Conference Series
Number2017
Volume12

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Keywords

  • Wave energy
  • Potential flow theory
  • Nonlinear hydrostatics
  • Nonlinear Froude Krylov forces
  • Weak-scatterer

Cite this

Bozonnet, P., Dupin, V., Tona, P., Kramer, M. M., & Chauvigné, C. (2017). Applicability of linear and non-linear potential flow models on a Wavestar float. In 12th EWTEC - Proceedings of the 12th European Wave and Tidal Energy Conference: 27th Aug -1st Sept 2017, Cork, Ireland [646] Technical Committee of the European Wave and Tidal Energy Conference. European Wave and Tidal Energy Conference Series, No. 2017, Vol.. 12