부유식 BBDB형 진동수주 파력발전장치의 운동 및 파랑표류력 연구

Abstract

The motions and wave drift forces of floating BBDB(backward-bent duct buoy) wave energy absorbers in regular waves are calculated taking account of the oscillating surface-pressure due to the pressure drop in the air chamber above the oscillating water column within the scope of the linear wave theory. A series of model tests has been conducted in order to verify the motion and time mean wave drift force responses in regular waves at the ocean engineering basin, MOERI/KORDI. The pneumatic damping through an orifice-type duct for BBDB wave energy device are deducted from experimental research. Numerical simulation for motion and drift force responses of the BBDB wave energy device considering pneumatic damping coefficients has been carried out and the results are compared with those of model tests.