基于CFD方法的FDPSO锥型垂荡板阻尼特性

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英文篇名：Damping Characteristics of Cone Heave Plate on FDPSO Based on CFD 作者：刘利琴 ; 张晓蕊 ; 唐友刚 ; 童波 英文作者：LIU Liqin;ZHANG Xiaorui;TANG Yougang;TONG Bo;School of Civil Engineering,Tianjin University;State Key Laboratory of Hydraulic Engineering Simulation and Safety,Tianjin University;Marine Design and Research Institute of China; 关键词：锥角 ; 附加质量 ; 阻尼系数 ; 计算流体力学 ; 涡量 英文关键词：cone angle;;additional mass;;damping coefficient;;computational fluid dynamics;;vorticity 中文刊名：ZGHY 英文刊名：China Offshore Platform 机构：天津大学建筑工程学院;天津大学水利工程仿真与安全国家重点实验室;中国船舶及海洋工程设计研究院; 出版日期：2019-06-28 出版单位：中国海洋平台 年：2019 期：v.34;No.195 基金：国家科学基金资助(51479134);; 天津市自然科学基金资助(16JCYBJC21200) 语种：中文; 页：ZGHY201903005 页数：7 CN：03 ISSN：31-1546/TE 分类号：30-36

摘要

针对一种新型锥型浮式钻井生产储卸油装置(Floating Driuing Production Storage and Offloading System,FDPSO),从抑制垂荡和纵摇运动的角度分析得到结构的最佳垂荡板形式。运用基于势流理论的AQWA软件对FDPSO进行短期预报,确定不同海况下结构垂荡和纵摇运动形式。以计算流体力学为理论基础,通过模拟浮体单自由度简谐强迫运动,分析垂荡板锥角大小对结构垂荡、纵摇的附加质量和阻尼系数的影响。从涡量场角度分析阻尼板对周围流体的作用效果。结果表明:在一年一遇和百年一遇海况下,对于垂荡运动的抑制,锥角越小效果越好;对于纵摇运动的抑制,不同海况条件下都体现出10°锥角其优越性,锥角远离10°则纵摇无因次阻尼下降;对比阻尼板周围涡量场分布随运动的变化,分析得出涡的生成、发展和脱落与结构的周期性运动相关。
        For a new type of cone Floating Drilling Production Storage and Offloading system(FDPSO),the optimal form of the heave plate is analyzed from the viewpoint of suppressing the heave and pitch motion.A short-term prediction of FDPSO is carried out using the software AQWA based on potential flow theory,and the motion forms of heave and pitch of structures under different sea states are determined.The effect of cone angle on the additional mass and damping coefficient of heave and pitch is studied based on the theory of computational fluid dynamics and through the simulation of forced simple harmonic motion with single degree of freedom of the floating.The effect of damping plate on the surrounding fluid is analyzed from the view of vortices field.In once per year and once per one hundred years sea conditions,the results show that:the smaller the cone angle is,the better the suppression effect of heave motion is;for the suppression of pitch motion,different sea conditions both reflect the superiority of the cone angle at 10 degrees;when the cone angle is away from10 degrees,the dimensionless damping of pitch will decrease;in contrast with the variation of vorticity field distribution along the damping plate,the generation,development and shedding of vortices are related to the periodic motion of the structure.

引文

[1]王天英,冯永训.新概念FPSO最新研究进展[J].船海工程,2011(05):184-188,192.
    [2]赵志娟,唐友刚,吴植融,等.新概念多筒式FPSO设计及幅频特性研究[J].船舶工程,2013(01):95-98.
    [3]李焱,唐友刚,赵志娟,等.新型多筒式FDPSO概念设计及其系泊系统分析[J].中国舰船研究,2013(05):97-103.
    [4]王天英,亓和平.新概念FPSO总体方案设计研究[J].船海工程,2012(02):138-143.
    [5]王天英,杜敏,倪玲英.浅水新型FPSO张紧式多点系泊系统时域分析[J].石油机械,2015(10):54-58.
    [6]王天英,亓和平,冯永训.新型FPSO IQFP的水动力性能研究[J].石油机械,2013(01):49-54.
    [7]姚宇鑫,王文华,黄一.新型沙漏式浮式生产储油系统的概念设计分析[J].上海交通大学学报,2014(04):558-564.
    [8]王文华,姚宇鑫,黄一.新型沙漏式FPSO的浮体外形参数对水动力性能的影响[J].中国造船,2015(02):28-37.
    [9]王世圣,赵晶瑞,谢彬,等.深水八角形FDPSO总体性能分析[J].船海工程,2014(03):183-186,189.
    [10]于晨芳,胡志强,王晋.深水八角形FDPSO垂荡性能数值分析[J].中国海洋平台,2016(01):23-28.