fa بهینه سازی چند هدفه هیدرودینامیکی فرم بدنه شناور تندرو پلنینگ به کمک الگوریتم ژنتیک در آب آرام هیدرودینامیک کشتی Ship Hydrodynamic مقاله پژوهشي Research Paper So far many case-study researches have been undertaken to propose suitable models for hull optimization of planning high-speed crafts. In this paper a systematic and generic method is illustrated for the first time to introduce the optimized hull form of craft considering the desired speed and weight. Using semi-empirical Savitsky's method, optimal geometrical parameters of planning high-speed craft are defined to minimize the hydrodynamic resistance. Of course some variants i.e. beam, deadrise and the distance of center of gravity to transom and two objective functions are introduced for hull optimization via Pareto-based genetic algorithm. The first objective function is the ratio of pressure and frictional resistance summation to displacement and the second one is the ratio of water spray's wetted area to displacement volume powered two-thirds. Optimization involves constraints such as: governing limitations on Savitsky method, hydrostatic stability, proposing instability and corkscrew dynamic stability. Finally a bunch of variants optimal quantities are presented to be applied in conceptual designing of high-speed monohull crafts. High Speed Vessel, Hydrodynamic Resistance, Stability, Multi Objective Optimization, Genetic Algorithm 45 58 http://marine-eng.ir/browse.php?a_code=A-10-99-1&slc_lang=fa&sid=1 asghar mehrizi اصغر مهریزی a.mehrizi@gmail.com 1003194753284600661 1003194753284600661 Yes imam hossein university دانشگاه جامع امام حسین(ع) mohammad Tavakoli Dakhrabadi محمد توکلی دخرآبادی mechanic83_2006@yahoo.com 1003194753284600662 1003194753284600662 No Mech. Eng. Department, Sharif University of Tech. دانشکده مکانیک دانشگاه صنعتی شریف abbas Vafaee Sefat عباس وفایی صفت abbas_v@yahoo.com 1003194753284600663 1003194753284600663 No imam hossein university دانشگاه جامع امام حسین(ع) mohamad Saed seif محمد سعید سیف seif@sharif.edu 1003194753284600664 1003194753284600664 No Mech. Eng. Department, Sharif University of Tech. دانشکده مکانیک دانشگاه صنعتی شریف