An actuator disc analysis of a ducted high-solidity tidal turbine in yawed flow

This work elaborates a computational fluid dynamic model utilised in the investigation of the hydrodynamic performance concerning a ducted high-solidity tidal turbine in yawed inlet flows. Analysing the performance at distinct bearing angles with the axis of the turbine, increases in torque and mech...

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Bibliographic Details
Main Authors: Borg, Mitchell G., Xiao, Qing, Incecik, Atilla, Allsop, Steven, Peyrard, Christophe, 38th International Conference on Ocean, Offshore, and Arctic Engineering OMAE2019
Format: Conference Object
Language:English
Published: American Society of Mechanical Engineers 2019
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Online Access:https://www.um.edu.mt/library/oar/handle/123456789/99905
Description
Summary:This work elaborates a computational fluid dynamic model utilised in the investigation of the hydrodynamic performance concerning a ducted high-solidity tidal turbine in yawed inlet flows. Analysing the performance at distinct bearing angles with the axis of the turbine, increases in torque and mechanical rotational power were acknowledged to be induced within a limited angular range at distinct tip-speed ratio values. Through multiple yaw iterations, the peak attainment was found to fall between bearing angles of 15o and 30o , resulting in a maximum power increase of 3.22%, together with an extension of power development to higher tip-speed ratios. In confirmation, these outcomes were subsequently analysed by means of actuator disc theory, attaining a distinguishable relationship with blade-integrated outcomes. peer-reviewed