Uncertainty quantification of the dynamics of a wave energy converter

Guilherme Moura Paredes, Claes Eskilsson, Jens Peter Kofoed

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Abstract

Since time-domain simulations of wave energy converters are computationally expensive, how can we analyse their dynamics and test wide ranges of design variables, without simplifying the physics involved? One possible solution is the use of General Polynomial Chaos (gPC). GPC provides computationally efficient surrogate models for partial differential equation based models, which are particularly useful for sensitivity analysis and uncertainty quantification. We demonstrate the application of gPC to study the dynamics of a wave energy converter in an operational sea-state, when there is uncertainty in the values of the stiffness and damping coefficient of the power take-off.
Original languageEnglish
Title of host publicationVIII International Conference on Computational Methods in Marine Engineering : MARINE 2019
EditorsRichard Bensow, Jonas Ringsberg
PublisherInternational Center for Numerical Methods in Engineering
Publication date13 May 2019
Pages157-168
ISBN (Electronic)978-84-949194-3-5
Publication statusPublished - 13 May 2019
EventMARINE 2019 - VIII International Conference on Computational Methods in Marine Engineering - Göteborg, Sweden
Duration: 13 May 201915 May 2019
Conference number: 8

Conference

ConferenceMARINE 2019 - VIII International Conference on Computational Methods in Marine Engineering
Number8
CountrySweden
CityGöteborg
Period13/05/201915/05/2019

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Keywords

  • Uncertainty quantification
  • Sensitivity analysis
  • General polynomial chaos
  • Wave energy converter
  • Power Take-Off (PTO)
  • Numerical simulation

Cite this

Moura Paredes, G., Eskilsson, C., & Kofoed, J. P. (2019). Uncertainty quantification of the dynamics of a wave energy converter. In R. Bensow, & J. Ringsberg (Eds.), VIII International Conference on Computational Methods in Marine Engineering: MARINE 2019 (pp. 157-168). International Center for Numerical Methods in Engineering.