Preliminary Wave Energy Converters Extreme Load Analysis: Preprint

Yi-Hsiang Yu, Michael Lawson, Jennifer van Rij, Ryan Coe

Research output: Contribution to conferencePaper

Abstract

The wave-induced loads that WECs experienced during both operational and survival sea states is one of the cost drivers for the WEC structure design. These extreme loads must be carefully examined during the device design process, and the development of specific extreme condition modeling method is essential. In this paper, we first review the key findings and recommendations from the extremethis paper, the key findings and recommendations from the extreme conditions modeling workshop hosted by Sandia National Laboratories and the National Renewable Energy Laboratory are reviewed. Next, a study on the development and application of a modeling approach for predicting WEC extreme design load is described. The approach includes midfidelity Monte-Carlo-type time-domain simulations todetermine the sea state in which extreme loads occur. In addition, computational fluid dynamics simulations are employed to examine the nonlinear wave and floating-device-interaction-induced extreme loads. Finally, a discussion on the key areas that need further investigation to improve the extreme condition modeling methodology for WECs is presented.
Original languageAmerican English
Number of pages11
StatePublished - 2015
Event34th International Conference on Ocean, Offshore and Arctic Engineering (OMAE 2015) - Canada, St. John's, Newfoundland
Duration: 31 May 20155 Jun 2015

Conference

Conference34th International Conference on Ocean, Offshore and Arctic Engineering (OMAE 2015)
CityCanada, St. John's, Newfoundland
Period31/05/155/06/15

NREL Publication Number

  • NREL/CP-5000-63677

Keywords

  • computational fluid dynamics simulation
  • design load
  • extreme condition modeling
  • NREL
  • time-domain numerical model
  • wave energy

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