State-Space Realization of the Wave-Radiation Force Within FAST

Tiago Duarte, Marco Alves, Jason Jonkman, António Sarmento

Research output: Contribution to conferencePaperpeer-review

36 Scopus Citations

Abstract

Several methods have been proposed in the literature to find a state-space model for the wave-radiation forces. In this paper, we compared four methods, two in the frequency domain and two in the time domain. The frequency-response function and the impulse response of the resulting state-space models were compared against those derived from the numerical code WAMIT. A new state-space module was implemented within FAST, an offshore wind turbine computer-aided engineering tool, and we compared the results against the previously implemented numerical convolution method. The results agreed between the two methods, with a significant reduction in required computational time when using the new state-space module.

Original languageAmerican English
Number of pages12
DOIs
StatePublished - 2013
EventASME 2013 32nd International Conference on Ocean, Offshore and Arctic Engineering, OMAE 2013 - Nantes, France
Duration: 9 Jun 201314 Jun 2013

Conference

ConferenceASME 2013 32nd International Conference on Ocean, Offshore and Arctic Engineering, OMAE 2013
Country/TerritoryFrance
CityNantes
Period9/06/1314/06/13

Bibliographical note

See NREL/CP-5000-58099 for preprint

NREL Publication Number

  • NREL/CP-5000-61583

Keywords

  • Linear potential-flow theory
  • State-space model
  • Time-convolution
  • Wave radiation

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