基于计算流体动力学的最小阻力船型自动优化
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摘要
基于计算流体动力学(CFD)理论,利用i SIGHT优化设计平台构建一种船型自动优化方法。该方法集成船型变换及自动生成技术、CFD技术及优化算法。优化过程中,编制船型参数化融合模块实现船型变换与SHIPFLOW软件输入数据间的自动连接;采用遗传算法与二次序列规划法相结合的组合优化方法实现从全局探索再到局部空间寻优的整个流程。以某双艉集装箱船为例,优化后船体兴波阻力明显下降,总阻力也得到显著的改善,获得了设计航速下总阻力最小的船艏与船艉线型组合,表明了该方法的可行性与有效性。研究显示,所提出的方法可以获得阻力性能优良的船体型线供设计者参考,具有较强的工程适用性,在基于CFD的船型自动优化方面具有广阔的应用前景。
Based on CFD theory, a hull form optimization system is established in this paper with thei SIGHT multidisciplinary optimization platform,on which the hull transformation and automatic generationtechnology, CFD, and hybrid optimization algorithm are integrated. During the optimization process, thehull form transformation and generation program is specifically developed so that the hull form transforma-tion is automatically connected to SHIPFLOW. The Generic Algorithm-Sequential Quadratic Programmingcombined with the second order hybrid optimization method is then applied to bridge the global optimiza-tion to the search local optimum solution. For validation, the numerical optimization for a bulk ship withtwin-skeg is carried out. The results indicate that the wave-making resistance decreases significantly andthe total resistance increases with a more practical ship hull's fore body,which proves the feasibility andits broad application prospects in the field of hull form design and the automatic optimization of ship hull'shydrodynamic performance using CFD technology.
Based on CFD theory, a hull form optimization system is established in this paper with thei SIGHT multidisciplinary optimization platform,on which the hull transformation and automatic generationtechnology, CFD, and hybrid optimization algorithm are integrated. During the optimization process, thehull form transformation and generation program is specifically developed so that the hull form transforma-tion is automatically connected to SHIPFLOW. The Generic Algorithm-Sequential Quadratic Programmingcombined with the second order hybrid optimization method is then applied to bridge the global optimiza-tion to the search local optimum solution. For validation, the numerical optimization for a bulk ship withtwin-skeg is carried out. The results indicate that the wave-making resistance decreases significantly andthe total resistance increases with a more practical ship hull's fore body,which proves the feasibility andits broad application prospects in the field of hull form design and the automatic optimization of ship hull'shydrodynamic performance using CFD technology.
引文
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[2]谢永和,王贵彪.拖网渔船水动力节能技术研究[J].水动力学研究与进展(A辑),2014,29(2):232-237.XIE Yonghe,WANG Guibiao.Research on hydrodynamic energy-saving technology of the trawler[J].Chinese Journal of Hydrodynamics(Ser.A),2014,29(2):232-237.
[3]程红蓉,陈京普,王艳霞,等.几种船型优化手段在节能船型开发中的应用[J].中国造船,2012,53(增刊1):31-39.CHENG Hongrong,CHEN Jingpu,WANG Yanxia,et al.Application of several hull lines optimization methods in green ships[J].Shipbuilding of China,2012,53(supp 1):31-39.
[4]赵峰,李胜忠,杨磊,等.基于CFD的船型优化设计研究进展综述[J].船舶力学,2010,14(7):812-821.ZHAO Feng,LI Shengzhong,YANG Lei,et al.An overview on the design optimization of ship hull based on CFD techniques[J].Journal of Ship Mechanics,2010,14(7):812-821.
[5]张宝吉,马坤.基于Rankine源法的船体线型优化设计[J].上海交通大学学报,2010,44(10):1414-1417.ZHANG Baoji,MA Kun.Optimization design of hull lines based on Rankine source method[J].Journal of Shanghai Jiao Tong University,2010,44(10):1414-1417.
[6]谢玲玲,冯佰威,刘祖源.基于CFD的高速船船体型线的自动优化[J].华中科技大学学报(自然科学版),2011,39(6):129-132.XIE Lingling,FENG Baiwei,LIU Zuyuan.Automatic optimization of high-speed hull forms using CFD[J].Journal of Huazhong University of Science and Technology(Natural Science Edition),2011,39(6):129-132.
[7]陈京普,朱德祥,刘晓东.兴波阻力数值预报方法研究及其在集装箱船船型优化中的应用[J].水动力学研究与进展(A辑),2006,12(1):113-121.CHEN Jingpu,ZHU Dexiang,LIU Xiaodong.A research on numerical prediction method for wave-making resistance and its application to container ship hull form optimization[J].Journal of Hydrodynamics(Ser.A),2006,12(1):113-121.
[8]方昭昭,赵丙乾,陈庆任.基于CFD的双艉船型阻力数值预报[J].中国舰船研究,2014,9(4):36-62.FANG Zhaozhao,ZHAO Bingqian,CHEN Qingren.CFD theory based resistance prediction for ships with twin-skeg[J].Chinese Journal of Ship Research,2014,9(4):36-62.
[9]徐力,陈作钢.船体艏部水动力性能优化[J].中国舰船研究,2012,7(2):37-64.XU Li,CHEN Zuogang.Hydrodynamic performance optimization of ship hull's forebody[J].Chinese Journal of Ship Research,2012,7(2):37-64.
[10]TAHARA Y,TOHYAMA S,KATSUI T.CFD-based multi-objective optimization method for ship design[J].International Journal for Numerical Methods in Fluids,2006,52(5):499-527.
[11]PERI D,CAMPANA E F.Multidisciplinary design optimization of a naval surface combatant[J].Journal of Ship Research,2003,47(1):1-12.
[12]HARRIES S.Parametric design and hydrodynamic optimization of ship hull forms[M].Berlin:Mensch-und-Buch-Verlag,1998.
[13]ZHANG B J,MA K,JI Z S.The optimization of the hull form with the minimum wavemaking resistance based on Rankine Source method[J].Journal of Hydrodynamics(Ser.B),2009,21(2):277-284.
[14]钱建魁,毛筱菲,王孝义,等.基于CFD和响应面方法的最小阻力船型自动优化[J].船舶力学,2012,16(1/2):36-43.QIAN Jiankui,MAO Xiaofei,WANG xiaoyi,et al.Ship hull automated optimization of minimum resistance via CFD and RSM technique[J].Journal of Ship Mechanics,2012,16(1/2):36-43.
[15]陈文战,陈伟,杨向晖,等.最小阻力的参数化船型优化研究[J].中国舰船研究,2013,8(2):28-33.CHEN Wenzhan,CHEN Wei,YANG Xianghui,et al.Parametric hull form optimization for minimun resistance[J].Chinese Journal of Ship Research,2013,8(2):28-33.
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