Influence of blade solidity on marine hydrokinetic turbines

Michael Jonson, John Fahnline, Erick Johnson, Matthew Barone, Arnold Fontaine

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Marine hydrokinetic (MHK) devices are currently being considered for the generation of electrical power in marine tidal regions. Turbulence generated in the boundary layers of these channels interacts with a turbine to excite the blades into low-to mid-frequency vibration. Additionally, the self-generated turbulent boundary layer on the turbine blade excites its trailing edge into vibration. Both of these hydrodynamic sources generate radiated noise. Being installed in a marine ecosystem, the noise generated by these MHK devices may affect the fish and marine mammal well-being. Since this MHK technology is relatively new, much of the design practice follows that from conventional horizontal axis wind turbines. In contrast to other underwater turbomachines like conventional merchant ships that have solid blades, wind turbine blades are made of hollow fiberglass composites. This paper systematically investigates the contrast of this design detail on the blade vibration and radiated noise for a particular MHK turbine design.

Original languageEnglish (US)
Title of host publication41st International Congress and Exposition on Noise Control Engineering 2012, INTER-NOISE 2012
Pages10038-10045
Number of pages8
StatePublished - Dec 1 2012
Event41st International Congress and Exposition on Noise Control Engineering 2012, INTER-NOISE 2012 - New York, NY, United States
Duration: Aug 19 2012Aug 22 2012

Publication series

Name41st International Congress and Exposition on Noise Control Engineering 2012, INTER-NOISE 2012
Volume12

Other

Other41st International Congress and Exposition on Noise Control Engineering 2012, INTER-NOISE 2012
Country/TerritoryUnited States
CityNew York, NY
Period8/19/128/22/12

All Science Journal Classification (ASJC) codes

  • Acoustics and Ultrasonics

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