반잠수식 해상크레인 및 예인선에 작용하는 풍하중 및 조류하중 산정을 위한 점성 유동장 해석

In this paper, numerical simulations were performed for the evaluation of wind and current loads acting on the semi-submersible crane and transport barge using AMYS-CFX package. The Navier-Stokes equations are solved to simulate the fluid flow around the offshore structures with incoming wind and current. Offshore structures were divided with topside am sub-side on the basis cf draft for wind and current loads acting on the top and sub side of structures, respectively. Computational domain is consist of hexa-triacontagon(36° sides polygon) to calculate the hydrodynamic forces with incident angle of flow. Wind viscous boundary layer developed above the sea surface was actualized for the wind loads acting on the top-side of structures. Velocity responsiveness test was performed for the estimation about variation of drag coefficient by the velocities. In case of current, numerical simulations were carried out for the evaluation of current km由 and moments acting on the sub-side of semi-submersible crane and transport barge with incident angle of fluid flows.