二つの二次元浮体の振動による波力エネルギー吸収について : ワイドスペース近似と境界要素法による数値解

概要

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To estimate the usefulness of the wide-spacing approximation proposed by Ohkusu, Srokosz et al, the present paper treats the interaction of two floating bodies. First, the accuracy of the wide-spacing approximation is discussed by using the Green function by John and it is shown that the accuracy of this approximation is of order exp (-l) where l is the distance between two bodies. Second, the numerical calculation is carried out by using the boundary element method about the two-dimensional rectangular floating bodies, and its results are compared with the wide-spacing approximation. It is shown that the wide-spacing approximation is very accurate in the heave motion, but the accuracy in the sway motion is not as good in the case where the distance between bodies is less than 1.5 times the body width. Finally, the energy absorption coefficient in two heaving rectangular bodies is examined by using the wide-spacing approximation.
一般社団法人日本機械学会の論文
1989-10-25