動揺浮体に作用する流体力解析のためのN-Sソルバーの開発

抄録

This paper presents a newly developed procedure to solve the two-dimensional unsteady Navier-Stokes equations for an oscillating floating body. The main goal of this procedure is to investigate the unsteady viscous flow around a floating body at small amplitudes. Heaving motion and rolling motion are numerically simulated in order to compute the added mass and damping coefficients. The simulation results are compared to the values obtained by the inviscid-based potential theory. An experimental comparison is additionally carried out using the wave response, which is estimated from the added mass and damping coefficients obtained from the proposed N-S solver. The simulation results presented in this paper are remarkably similar to the ones computed from potential theory.