変分原理を用いた細長滑走艇の未定浸水面の決定法について

概要

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A simple method of solution based on the adjoint variational principle already presented by the authors is investigated for determination of the unknown wetted surface and also the loading of slender planning ship. Efforts is made focusing on avoidance of the ill definiteness in the slender body theory in which the Kutta's condition, or smooth flowing out condition at the stern end, to determine the circulation distribution has been missed. Any simple trial functions free of slender body approximation of the kernel function in the principle leads to adequate solution as much as appropriate. The adjoint, reversal loading function and circulation distribution as an eigenfunction in the principle are suitable to singularity reduction in the functional, thought their characteristics are physically meaningless as presumed. Comparison of the wetted surface of a plate is made with the experimental one.
社団法人日本船舶海洋工学会の論文
1998-09-25