Hydrodynamics and wake flow analysis of a Π-type vertical axis twin-rotor tidal current turbine in surge motion
作者： Yong Ma , Yong Ma , Lei Li , Chao Hu
DOI: 10.1016/J.OCEANENG.2021.108625
关键词: Mechanics 、 Thrust 、 Amplitude 、 Geology 、 Turbine 、 Rotor (electric) 、 Rotation around a fixed axis 、 Surge 、 Power station 、 Wake
摘要: Abstract For a floating tidal current turbine power station, the motion response of carrier would affect hydrodynamic performance turbine. To study loads and output characteristics proposed twin-rotor in moving condition, vertical axis surge is thoroughly discussed this manuscript. Based on mesh sliding technique, rotary are combined to simulate operation conditions waves currents. The working at different frequencies, amplitudes, tip speed ratios simulated simulation results compared with fixed an uniform flow. change thrust force, lateral flow field analyzed. show that can improve efficiency better than stand-alone Surge frequency amplitude have very little influence average fluctuation forces larger turbine, while increase frequency. Spectra rotation frequencies impacts dynamics performances research provide reference for development stations future.
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