Abstract
ABSTRACT This paper presented theoretical and experimental models for the investigation of the amplitude of the vertical motion of a cylinder by a two-dimensional linear wave, passing through a circular horizontal cylinder close to the free surface in water. To consider the effect of the free surface, the Gap ratio = d/a was introduced by dividing the distance d between the centre of the cylinder and the water surface by the radius a of the cylinder. In this study, the smaller the Gap ratio, the greater the effect of the free surface, and it was theoretically calculated that it caused severe fluctuations in the hydrodynamic coefficients. In particular, by expanding previous studies for the calculation of hydrodynamic coefficients, the oscillating amplitude of the cylinder close to the free surface was proved by experiment.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
