Multi-Objective Optimization of A Semisubmersible for Ultra-Deep Water     

陈新权  谭家华 《中国海洋工程》2008,22(1):11-20

Semisubmersible will work well when oil exploitation goes to ultra-deep water because of its variable load capacities, and good motion performance in extreme waves. It is considered to be a main type of platform while the water depth is more than 3000 meters. This paper establishes a multi-objective optimization model of semisubmersible for ultra-deep water, and it is solved by a multi-objective genetic algorithm--NSGA-Ⅱ. The model is applied to a practical design, and Pareto results are obtained. The effectiveness of the method is verified by hydrodynamic analysis.  相似文献   

耙吸挖泥船导管可调桨设计及实验研究   总被引：1，自引：0，他引：1  

余龙  张戟  陈新权  蒋志鹏 《海洋工程》2010,28(3)

某4 500 m3耙吸挖泥船,经多年使用后主机功率下降,挖泥作业时推力不足。对该船主机进行实测,了解并确认主机的工作状态,在不改变轴系和调距机构的前提下,首次采用JDC4-55可调桨配合高效导管替代原有可调桨的设计方案,并进行了新导管可调桨和原桨的敞水实验及自航实验。实验结果显示该改造设计方案能显著提高该船挖泥工况的推力,达到节能增效的目的。此外,对于尾部设置类似导流尾鳍的导流结构进行了相关实验,得到有益结论。  相似文献