渦法による浮体構造物の非線形波浪中挙動解析法の開発(第1報)自由表面下で振動する物体に働く流体力

概要

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To utilize floating structure under heavy environmental condition in sea safely, motions of the floating body and the mooring forces acting on the body have to be reduced. To decrease these motions and mooring forces, fins attached structure has been proposed.In this paper, as a first step of the study, two vortex methods, the Random-Walk method and the Core-Spreading method, are applied to uniform flow past a circular cylinder and heaving fin plate under free surface. In the simulation of uniform flow, we conduct parametric study which helped us determine the numerical parameters to be used in subsequent simulations. Then, the simulated wake velocities are compared with experimental results to verify the calculation accuracy. In the simulation of heaving plate, hydrodynamic forces on the plate are simulated and compared with experimental results.
社団法人日本船舶海洋工学会の論文