Abstract
The numerical simulations were conducted for Bottom-Hinged Oscillating Wave Surge Converters (BH-OWSCs) using the computational-fluid-dynamics (CFD) software FLOW- 3D, and based on the wave climate of the offshore sea in northeast Taiwan, that is, 1.5 meters of wave height and 7 seconds of the wave period. The results were compared with that using the simulation toolbox for wave energy converter (WEC), WEC-Sim, which is a based on the potential-flow assumption. Therefore, the viscous effect of the fluid in the BH-OWSCproblem can be elucidated. This paper investigated the power capture of the BH-OWSC with various parameters including flap width, flap thickness, flap density, and position of center of mass.The results showed that, on average, the viscous loss of fluid would reduce the capture factor (CF) of the BH-OWSC by 19.1%.