2D-BBDB형 파 에너지 흡수장치에 작용하는 음의 시간평균 파 표류력 해석

Abstract

The motion and time-mean drift force of a 2-D floating BBDB in waves are studied with and without taking account of fluctuating air pressure im the air chamber. It ahs been found numerically that the drift force of the BBDB is in the reverse direction of propagation of the imcident waves over specific frequency ranges as found by McCormick through his experimental work. the drift force is calculated by Pinkster's near-field method. Since Maruo's far-field method for the drift force is always positive, Maruo's formula is only approximate and should be replaced by the correct near-field method.