超高速船の船型最適化と性能評価 : SWATH船型とポッド船型の場合

概要

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Optimal design method is applied to hull design of Fast ships with SWATH type and Pod type hullforms. The main objective of this study is to find the optimal hullform for SWATH type ships with high speed operation. The SWATH type ships are well known with their outstanding motion performance in waves. On the other hand, their resistance has rather higher than conventional hullforms of monohulls and catamarans. However, reasonable hullform design using optimization method would reduce the resistance significantly, which would result that the SWATH type hullform to be suitable for the fast ship's hull. In this paper, a SQP (Sequential Quadratic Programming) method is adopted for the optimization. The generated optimal SWATH hullforms show that the cross sectional area of the hull is much reduced at the mid part of the hull, which results in lower wave resistance. On the contrary, the hull with straight cross sectional area shows higher wave resistance. The trade-offs between each hull are, then, discussed. Furthermore, the resistance of the pod type hulls is also examined.
社団法人日本船舶海洋工学会の論文
2005-03-25