Practical ships have different operating speeds, draft and trim in multiple load conditions. Therefore, in the hull form improvement, it is necessary to develop a different hull form in substance for every condition, from a viewpoint of hydrodynamics. The present paper proposes a hull form optimization method for reducing wavemaking resistance using the real-coded genetic algorithms in multiple load conditions. The real-coded genetic algorithm (GA) of the optimization method, employs the UNDX (Unimodal Normal Distribution Crossover) as a crossover operator, and employs the POSS (Pareto Optimal Selection Strategy) as a generation-alternation model. The hull form optimization for Series60 (CB=0.6) is carried out using the program that is based on the present method. In the optimization, many Pareto solutions are obtained. These hull forms have lower wave-making resistance with the panel-shift type Rankine source method on both the full load condition and the ballast condition, in comparison with the original hull form.
|ホスト出版物のタイトル||10th International Symposium on Practical Design of Ships and other Floating Structures, PRADS 2007|
|出版ステータス||出版済み - 12月 1 2007|
|イベント||10th International Symposium on Practical Design of Ships and other Floating Structures, PRADS 2007 - Houston, TX, 米国|
継続期間: 9月 30 2007 → 10月 5 2007
|その他||10th International Symposium on Practical Design of Ships and other Floating Structures, PRADS 2007|
|Period||9/30/07 → 10/5/07|
!!!All Science Journal Classification (ASJC) codes