Design and Performance Assessment of a Tidal Ducted Turbine

Tidal Current Energy can be eligible as one of the most interesting renewable and clean energy resources with the promise of a regular and predictable production of electricity. In the framework of the "MWATFORCE" Project from GUINARD Energies, a ducted tidal turbine has been developed. This paper presents the design of the runner based on the Blade Element Momentum theory and optimization of the shape minimizing cavitation development and stresses. The assessment of the turbine performance is made by presenting the unsteady turbulent flow numerical simulations of the full ducted tidal turbine in open flow conditions. A power coefficient as much as 55% is found for a tip speed ratio of 7. As expected, the pressure drop and the bulk velocity through the rotor as well are enhanced by the shaped duct compared to the free actuator disk, demonstrating the advantage of this design.


Presented at:
3rd IAHR International Meeting of the Workgroup on Cavitation and Dynamic Problems in Hydraulic Machinery and Systems, Brno, Czech Republic, October 14-16, 2009
Year:
2009
Publisher:
Brno
Keywords:
Laboratories:


Note: The status of this file is: EPFL only


 Record created 2009-08-05, last modified 2018-03-17

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