Abstract
The turbine used for a wave-power-generating system is driven by the oscillating airflow produced by the water wave motion. The Wells turbine has the simple vane-less structure using no-twist and symmetrical blades, which drives its unidirectional rotational motion even though the turbine is driven in the oscillating airflow. In this paper, the important basic characteristics of the turbine are derived by the 2D-CFD and the potential theory of cascade. The lift coefficients solved by the CFD become much less than the potential calculation with increase of the solidity.
