垂荡板对Truss Spar平台垂荡性能的影响分析
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摘要
为了研究垂荡板对Truss Spar平台垂荡性能的影响,在建立Truss Spar平台垂向波浪载荷计算模型的基础上,基于柯莱根-卡彭特数Kc计算了Truss Spar平台的黏性阻尼,提出了垂荡响应幅值的理论计算方法,并将理论计算结果与AQWA软件的仿真结果进行对比。分析结果表明:2种分析方法下垂荡响应幅值趋势一致,峰值较为接近,而且理论计算方法计算速度明显优于仿真分析方法;基于Kc数的垂荡响应幅值理论计算方法能快速有效地分析设有垂荡板的海洋平台的垂荡响应;黏性阻尼能够有效抑制Truss Spar平台的垂荡响应,在垂荡响应分析中不可或缺,垂荡板贡献的黏性阻尼是总黏性阻尼的主要组成部分。所得结论可为合理确定Truss Spar平台垂荡响应幅值提供参考。
To study the effect of the heave plate on the heaving performance of the Truss Spar platform,based on the establishment of calculation model of the vertical wave load of the Truss Spar platform,the viscous damping of the Truss Spar platform has been calculated based on the Keulegan-Carpenter number Kc. The theoretical calculation method of the heave response amplitude has been proposed. The theoretical results were compared with the simulation results of AQWA software. The analysis results show that the two analytical methods have the same trend of heaving response amplitude with close peak value. The calculation speed of the theoretical calculation method is faster than that of the simulation analysis method. The Kc-based calculation method for heaving response amplitude could be used to quickly and effectively analyze the heaving response of the offshore platform with heave plate. The viscous damping can effectively suppress the heaving response of the Truss Spar platform,which could not be ignored in the analysis of heaving response. The viscous damping contributed by the heaving plate is the main component of total viscous damping. The conclusion could provide references for reasonably determining the heaving response amplitude of the Truss Spar platform.
To study the effect of the heave plate on the heaving performance of the Truss Spar platform,based on the establishment of calculation model of the vertical wave load of the Truss Spar platform,the viscous damping of the Truss Spar platform has been calculated based on the Keulegan-Carpenter number Kc. The theoretical calculation method of the heave response amplitude has been proposed. The theoretical results were compared with the simulation results of AQWA software. The analysis results show that the two analytical methods have the same trend of heaving response amplitude with close peak value. The calculation speed of the theoretical calculation method is faster than that of the simulation analysis method. The Kc-based calculation method for heaving response amplitude could be used to quickly and effectively analyze the heaving response of the offshore platform with heave plate. The viscous damping can effectively suppress the heaving response of the Truss Spar platform,which could not be ignored in the analysis of heaving response. The viscous damping contributed by the heaving plate is the main component of total viscous damping. The conclusion could provide references for reasonably determining the heaving response amplitude of the Truss Spar platform.
引文
[1]魏跃峰,杨建民,陈刚.Spar平台垂荡阻尼板水动力研究综述[J].中国海洋平台,2010,25(6):1-4.
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[5]SUBBULAKSHMI A,JOSE J,SUNDARAVADIVELU R,et al.Effect of viscous damping on hydrodynamic response of spar with heave plate[J].Aquatic Procedia,2015(4):508-515.
[6]AN S,FALTINSEN O M.An experimental and numerical study of heave added mass and damping of horizontally submerged and perforated rectangular plates[J].Journal of Fluids&Structures,2013,39(5):87-101.
[7]纪亨腾,黄国梁,范菊.垂荡阻尼板的强迫振荡试验[J].上海交通大学学报,2003,37(7):977-980.
[8]滕斌,郑苗子,姜胜超,等.Spar平台垂荡板水动力系数计算与分析[J].海洋工程,2010,28(3):1-8.
[9]刁伟,翟钢军,李彬彬.考虑粘滞阻尼的Truss Spar频域响应分析[J].船海工程,2011,40(1):147-151.
[10]李彬彬,欧进萍.Truss Spar平台垂荡响应频域分析[J].海洋工程,2009,27(1):8-16.
[11]竺艳蓉.海洋工程波浪力学[M].天津:天津大学出版社,1991:125-132.
[12]BERNARD M.海洋工程水动力学[M].刘水庚,译.北京:国防工业出版社,2012:178-186.
[2]LAKE M,HE H,TROESCH A W,et al.Hydrodynamic coefficient estimation for TLP and spar structures[J].Journal of Offshore Mechanics&Arctic Engineering,1999,122(2):118-124.
[3]PRISLIN I,BLEVINS R D,HALKYARD J E.Viscous damping and added mass of solid square plates[C]∥Proceeding of 17th International Conference on Offshore Mechanics and Arctic Engineering.Portugal:[s.n.],1998.
[4]BEARMAN P W,DOWNIE M J,GRAHAM J M R,et al.Forces on cylinders in viscous oscillatory flow at low Keulegan-Carpenter numbers[J].Journal of Fluid Mechanics,1985,154:337-356.
[5]SUBBULAKSHMI A,JOSE J,SUNDARAVADIVELU R,et al.Effect of viscous damping on hydrodynamic response of spar with heave plate[J].Aquatic Procedia,2015(4):508-515.
[6]AN S,FALTINSEN O M.An experimental and numerical study of heave added mass and damping of horizontally submerged and perforated rectangular plates[J].Journal of Fluids&Structures,2013,39(5):87-101.
[7]纪亨腾,黄国梁,范菊.垂荡阻尼板的强迫振荡试验[J].上海交通大学学报,2003,37(7):977-980.
[8]滕斌,郑苗子,姜胜超,等.Spar平台垂荡板水动力系数计算与分析[J].海洋工程,2010,28(3):1-8.
[9]刁伟,翟钢军,李彬彬.考虑粘滞阻尼的Truss Spar频域响应分析[J].船海工程,2011,40(1):147-151.
[10]李彬彬,欧进萍.Truss Spar平台垂荡响应频域分析[J].海洋工程,2009,27(1):8-16.
[11]竺艳蓉.海洋工程波浪力学[M].天津:天津大学出版社,1991:125-132.
[12]BERNARD M.海洋工程水动力学[M].刘水庚,译.北京:国防工业出版社,2012:178-186.