Zeng, C.C.ZengAbdel-Maksoud, M.M.Abdel-Maksoud2021-03-052021-03-052019-0911th International Workshop on Ship and Marine Hydrodynamics (IWSH2019), Paper 30http://hdl.handle.net/11420/9009Increasing the rotational speed of a turbine rotor leads to a reduction of the stream velocity passing through the rotor. By diverging the upstream flow, the slowed wake reduces the fluid mass flowing through the rotor, and thus, the power output. The present study aims to determine if and by which extent a sway motion, by deviating the turbine rotor from the following delayed wake, is able to improve the power output of a turbine. A low-order panel method, namely panMARE, is applied, and the DOE Reference Model 1 turbine is used as the test object. First, a series of open-water simulations is carried out and compared with the corresponding RANS results to verify the numerical setup. Then, the hydrodynamic behaviour of a turbine swaying sinusoidally with two different time periods are simulated. The results indicate that the sway motion does help to improve the power harness of the turbine and the improvement increases with the increase of the maximum sway velocity as well as the tip speed ratio of the turbine rotor. Some other characteristics of the turbine in sway motions are also investigated by the subsequent data analysis.enhttp://rightsstatements.org/vocab/InC/1.0/Betz limitPanel methodSway motionTidal current turbineWakeTechnikIngenieurwissenschaftenConference Paper10.15480/882.333510.15480/882.3335Fluiddynamik und Schiffstheorie M-8Conference Paper