Experimental study on inflatable circular diaphragms used in the oscillating water column wave energy converter

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Abstract

Wave Energy Converters (WECs) convert ocean waves' kinetic and potential energy into electricity. This paper studies the effect of different parameters on an Inflatable Circular Diaphragm (ICD) used in a WEC de-vice. A small-scale Oscillating Water Column (OWC) with an elastomer part at the top of the air chamber is considered, and several experiments on the water tank and dry test rig are conducted. In the first part, the experimental results of an OWC with an ICD in the small water tank are presented, and the effect of wave height and frequency on the deformation of an elastomer is studied. In the second part, further experiments are done in a dry test rig to analyse a stiffer elastomer. Some parameters' effects under harmonic and static loadings are investigated. Also, the experimental results are validated using finite element-based software, and numerical simulations are in excellent agreement with the Qualisys system's results.
Original languageEnglish
Title of host publicationProceedings of the 9th International Conference on Marine Structures (MARSTRUCT 2023)
Place of PublicationLondon
Number of pages7
Publication statusPublished - 5 Apr 2023
EventMARSTRUCT 2023: 9th International Conference on Marine Structures - Chalmers University of Technology, Gothenburg, Sweden
Duration: 3 Apr 20235 Apr 2023
http://www.marstruct-vi.com/marstruct2023/

Conference

ConferenceMARSTRUCT 2023
Abbreviated titleMARSTRUCT 2023
Country/TerritorySweden
CityGothenburg
Period3/04/235/04/23
Internet address

Keywords

  • experimental study
  • inflatable circular diaphragms
  • oscillating water column
  • wave energy converter (WEC)

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