基于CFD的通用型FPSO船首外飘耐波性  

CFD Investigation of General FPSO Hull Bow Flare Seakeeping

作　　者：祁越 窦培林[1] 袁洪涛 赵世发 王震 李民 QI Yue;DOU Peilin;YUAN Hongtao;ZHAO Shifa;WANG Zhen;LI Min(School of Naval Architecture and Ocean Engineering,Jiangsu University of Science and Technology,Zhenjiang 212003,Jiangsu,China;Shanghai Waigaoqiao Shipbuilding Co.,Ltd.,Shanghai 200137,China)

机构地区：[1]江苏科技大学船舶与海洋工程学院,江苏镇江212003 [2]上海外高桥造船有限公司,上海200137

出　　处：《船舶工程》2022年第12期43-48,共6页Ship Engineering

摘　　要：为探究通用型FPSO船首外飘带来的耐波性影响,基于CFD-FV方法采用Fluent软件进行三维时域模拟,模拟在巴西海域重现期为20年的极端海况下2种外飘模型的甲板上浪现象,对甲板上浪和波浪砰击进行耐波性分析。通过动压公式和砰击区域对云图动压进行验证。结果表明,3.5m的垂向外飘降低了35.09%的上浪程度,增加了相对的局部砰击载荷,局部应力主要分布于船首舷墙和主水层所在甲板的位置。局部应力满足船级社对浮式结构的设计要求。通过综合对比发现,船首外飘提高了FPSO整体的耐波性能,为通用型FPSO的船首外飘外型设计提供参考。The main research is to investigate the seakeeping effect that resulted from general FPSO hull bow flare. Computational Fluid Dynamics-Finite Volume(CFD-FV) method is applied with fluent software to simulate in 3D time domain. Simulation objects are two different bow flare models exposed to green water phenomenon, which is under the sea state of Brazilian sea 20 y of return’s extreme sea state. Seakeeping analysis includes wave on deck and wave slamming. Traditional dynamic pressure contour method is validated through dynamic pressure equation and slamming area. The results indicate that 3.5 m vertical bow flare reduces about 35.09% level of wave on deck, but also leads to relative magnitude of slamming impact’s increase at bow and deck. The maximum stress is mainly distributed at the position of bow bulwark and central flowing water on deck. Meanwhile, it meets the design requirement of ship classification society to floating structures. The comprehensive comparison indicate that bow flare improves the global seakeeping performance, which can be taken as a reference to the design of general Floating Production Storage and Offloading(FPSO) hull bow flare.

关 键 词：FPSO 船首外飘 耐波性 甲板上浪 波浪砰击 

分 类 号：U671.99[交通运输工程—船舶及航道工程]