五体船波浪中运动与增阻的主片体协同优化研究

以波浪中的运动和增阻为目标,进行了五体船主体型线、片体主尺度和布置的协同优化。解决了型线自动变换、参数化自动建模及计算网格合并等关键技术,实现了五体船全船的自动建模。利用ISIGHT进行建模与水动力计算的集成,建立了主片体协同多目标优化系统。运用遗传算法进行多目标优化,结果表明优化后五体船运动和增阻都有所改善,并对非规则波中的情况进行了一定的探讨。

Studies of Collaborative Optimization of Pentamaran Main hull and Demihulls Based on Motions and Added Resistance in Waves

Collaborative optimization of main hull form, principal dimensions and configuration of demihulls of a pentamaran is conducted using its motions and added resistance in waves as objective functions. Hull form modification, automatic parametric modeling and mesh merging is accomplished which make automatic modeling of the whole pentamaran possible. Modeling and hydrodynamic computation are combined via ISIGHT to constitute the collaborative optimization system. Results shows that pitch, heave, roll and added resistance have been improved after the optimization using genetic algorithms. Finally pentamaran performance in irregular waves has been discussed.