Reference Model 2: 'Rev 0' Rotor Design 2018-07-30T21:56:01+00:00

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Filename SAND2011-9306.pdf
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Date added October 31, 2014
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Category Current Energy, Energy Security, Marine Hydrokinetic (MHK), Reference Models, Renewable Energy, Water Power
report-id SAND2011-9306
author M. Barone, T. Griffith, J. Berg
year 2011

The preliminary design for a three-bladed cross-flow rotor for a reference marine hydrokinetic turbine is presented. A rotor performance design code is described, along with modifications to the code to allow prediction of blade support strut drag as well as interference between two counter-rotating rotors. The rotor is designed to operate in a reference site corresponding to a riverine environment. Basic rotor performance and rigid-body loads calculations are performed to size the rotor elements and select the operating speed range. The preliminary design is verified with a simple finite element model that provides estimates of bending stresses during operation. A concept for joining the blades and support struts is developed and analyzed with a separate finite element analysis. Rotor mass, production costs, and annual energy capture are estimated in order to allow calculations of system cost-of-energy.