Study on the Influence of Carrier Motion of Vertical Axis Turbine Power Station on Turbine Performance

The carrier movement has great impact on the turbine performance. Firstly, the performance parameters of the stationary turbine are solved with flux-tube model and the blade element theory. Then the kinematics and dynamics of the carrier are analyzed, and the motion response of the carrier in the tidal power station is obtained. After that, the movement of the turbine spindle caused by the carrier oscillation is transformed into the movement of water flow, and the relative velocity of each point on the turbine spindle is obtained. By solving the local flow velocity of the spindle, the hydrodynamic force of the turbine impeller, when the carrier is moving, is obtained. Finally, the performance parameters of the carrier in stationary state and in motion state are compared. The results of comparison can provide theoretical support for the design and optimization of hydraulic turbine.