Yoon-Koo Kang

Wave Forces on Vertical Circular Cylinder with Small Diameter Under Two-Crossing Waves

Characteristics of wave forces and the drag and inertia coefficients on a vertical circular cylinder with small diameter in a two-crossing wave field have been experimentally investigated. ...

Study on Velocity Field of Crossing Waves

This paper is aimed to investigate the pertinent characteristics of velocity field of nonlinear crossing waves in finite water depth, based on the laboratory experiments and the 3rd-order crossing wave theory. The 3rd-order crossing wave theory is shown to estimate well the experimental results. In case that the directions of two wave trains are different, the velocity direction of crossing waves is different in water surface and bottom. In addition, the skewness of water particles of crossing waves is fairly affected by each wavelength of two wave trains and crossing angle.

Experimental Study on Wave Forces of Circular Cylinder in Crossing Wave Fields

In this study, the pertinent characteristics of wave forces acting on vertical circular cylinder in two crossing wave fields are experimentally investigated.The maximum wave force of crossing waves is large in case of crossing angle odegree, compared with the linear vector sum of maximum wave forces of two waves trains. However it is small in case of any crossing angle. As the nonlinearity of two wave trains becomes to be strong, the double-peak occurs in the profile of wave forces.The inertia coefficients determined from the wave-by-wave analysis have the different tendency with the envelope shape of water surface elevation, under prominent inertia forces.