造波抵抗性能から見た船型改良の理論的取り扱い

概要

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This paper deals with a problem of steady wave resistance when changing slightly the hull form against given original ship. Linearized boundary conditions with respect to a perturbation velocity potential due to the hull form modification are derived. When the wave resistance problem is solved by using conventional Rankine source method, the present formulation has some advantages: no rearrangement of the hull and free-surface panels is necessary even if the hull form is modified against the original ship, and the wave resistance change due to the form modification can be obtained in short computational time. This feature is convenience for obtaining a hull form with minimum wave resistance by appling the optimization technique. Using the present Rankine source method in conjunction with the optimization technique, improvements of Series 60 (C_b=0.6) hull form are introduced. As a result, wave resistance reduction of 11% against the original ship is obtained at F_n=0.3.
社団法人日本船舶海洋工学会の論文
1999-03-29