Numerical Analysis of Wave-induced Motion of Floating Pendulor Wave Energy Converter Nam, Bo-Woo; Hong, Sa-Young; Kim, Ki-Bum; Park, Ji-Yong; Shin, Seung-Ho;
In this paper, the wave-induced motion characteristics of a floating pendulor are investigated numerically. A floating pendulor is a movable-body-type wave energy converter. This device consists of three main parts (floater, pendulum, and damping plates). In order to obtain the hydrodynamic coefficients and wave exciting forces acting on floating bodies, a higher-order boundary element method (HOBEM) using a wave Green function is applied to the present problems. The hinged motion of a pendulum is simulated by applying the penalty method. In order to obtain a more realistic motion response for a pendulor, numerical body damping is included. First, the wave force and motion characteristics of just a floater are observed with respect to different shape parameters. Then, a coupled analysis of a floater, pendulum, and damping plates is carried out. The relative pitch velocity and wave forces acting on the floating pendulor are compared with those of a fixed pendulor.
Floating pendulor;Wave energy converter;Wave-induced motion;Higher-order boundary element method(HOBEM);Coupling analysis;
김진하, 류재문, 홍도천, 홍석원 (2006). "BBDB형 진동수주 파력 발전장치의 운동 및 파랑표류력 연구", 한국해양공학회지, 제20권 제2호, pp 22-28.
양동순, 조병학 (2009). "가변 수주진동장치를 이용한 고효율 파력발전에 관한 연구", 한국해양공학회지, 제23권 제5호, pp 15-24.
Choi, Y.R., Hong S.Y. and Choi, H.S. (2001). "An Analysis of Second-Order Wave Forces on Floating Bodies by Using a Higher-Order Boundary Element Method", Ocean Engineering, Vol 13, No 5, pp 117-138.
Hong, D.C. (1987). "On the improved green integral equation applied to the water wave radiation-diffraction problem", J. Soc. of Naval Architects of Korea, Vol 24, No 1, pp 1-8.
Zalar, M., Diebold, L., Baudin, E., Henry, J. and Chen, X.B. (2007). "Sloshing Effects Accounting for Dynamic Coupling between Vessel and Tank Liquid Motion", Proceedings of the 26th International Conference on Offshore Mechanics and Arctic Engineering, San Diego, USA.