摘要
文章利用CAESES和SHIPFLOW软件组成的优化设计平台构建一种船型自动优化方法。该方法通过参数化建模技术实现船型的自动变换,并通过遗传算法结合兴波阻力系数的势流计算对最佳阻力船型进行搜索。以某牲畜船为研究对象,通过该优化平台对考虑实际航行工况(operational profile)下阻力最佳的直艏和隐形球艏设计方案分别进行了最优值搜索,最后通过RANS方法计算总阻力并对优化结果进行验证。研究结果表明,提出方法优化后的两种船型总阻力均降低明显,说明选用的船型自动优化方法是可行的。
A hull type automatic optimization system is established in the paper with the optimization design platform composing by the softwares of CAESES and SHIPFLOW. A series of design variables of hull surface is generated by full parametric modeling approach of hull type and automatic optimization of bow lines is realized with the goal of minimum wave resistance using NSGA searching method. Taking the livestock carrier as the study object, based on the optimization platform, the design schemes of the straight stem and invisible bulbous bow with best resistance considering the actual operational profile are carried out the best value searching. Finally, the total resistance is calculated by RANS method and the optimization result is verified. The result shows that both optimization lines are reduced obviously, which proves the hull type automatic optimization approach is feasible.
出处
《船舶工程》
CSCD
北大核心
2018年第S1期28-31,122,共5页
Ship Engineering
关键词
参数化建模
牲畜船
型线优化
隐形球艏
实际航行工况
parametric modeling
livestock carrier
lines optimization
invisible bulbous bow
actual operational profile
