大型鉛直円柱による長周期波の非線形散乱問題に関する基礎的研究

概要

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The objectives of present paper are to formulate the nonlinear diffraction problem for the long waves induced by a short wave groups using the multiple scales perturbation method and to find the effect of 2nd-order long waves on the ocean structures. The governing equation for the 1st-order zeroth harmonic potential is obtained by using the solvability condition of the boundary value problem for 3rd-order zeroth harmonic potential. The formulas for the surface elevation of the 2nd-order long waves induced by modulated short wave groups are derived analytically. Numerical results are presented for the case where the envelope of incident waves-train is a sine function and the influences of the long waves around a huge circular cylinder are considered.
社団法人日本船舶海洋工学会の論文