Hydrodynamic analysis of huge-framed offshore aquaculture platforms and design of their mooring systems

被引：0
|
作者：
Yu J. [1 ]
Cheng X.-M. [1 ]
Zhang K. [1 ]
Ni X.-Y. [1 ]
Miao Y.-J. [1 ]
Liu X.-L. [1 ]
机构：
[1] China Ship Scientific Research Center, Wuxi
来源：
Chuan Bo Li Xue/Journal of Ship Mechanics | 2023年 / 27卷 / 10期
关键词：
aquaculture platform; hydrodynamics; Morison element; parallel mooring design;
D O I：
10.3969/j.issn.1007-7294.2023.10.005
中图分类号：
学科分类号：
摘要：
As offshore aquaculture platforms typical of huge-framed structures which support the net are being deployed further offshore, the hydrodynamic performance of the platforms is quite complex and yet very important to the adequate design of the platforms and their mooring systems as any significant underdesign or overdesign of the platforms and mooring systems can incur serious economic consequences. A method based on Morison equation was proposed for the assessment of the hydrodynamic loads on the aquaculture platforms including their frames and nets. A Morison model for an aquaculture platform was constructed, which could take into account the sheltering effect due to the surrounding net or beams through the equivalent hydrodynamic coefficients in three directions. The numerical analysis results of free attenuation show that the natural periods of heave, pitch and roll are far greater than those of conventional floating structures. A mooring system combining polyester with chains was designed to endow the whole system with less rigidity in transverse direction, followed by the time domain analysis to assess the hydrodynamic forces and mooring system performance in various environmental conditions. The numerical results indicate that the mooring tension can meet the design requirements, the safety factor of cable in good condition is 2.07, and the safety factor with one line broken is 1.463. © 2023 China Ship Scientific Research Center. All rights reserved.
引用
收藏
页码：1475 / 1486
页数：11
相关论文
共 28 条
  • [11] Yu S, Qin H, Li P, Et al., Nonlinear vertical accelerations and mooring loads of a semi-submersible offshore fish farm under extreme conditions, Aquacultural Engineering, 95, (2021)
  • [12] Bernard Molin, Hydrodynamics of ocean engineering, (2012)
  • [13] Gui F, Yao X, Meng A, Et al., Research on relationship of wave parameters and hydro-coefficient of bar structures, Journal of Dalian University of Technology, 57, 2, pp. 164-169, (2017)
  • [14] Lader P F, Enerhaug B, Fredheim A, Et al., Modelling of 3D net structures exposed to waves and current, 3rd International Conference on Hydroelasticity in Marine Technology, pp. 19-26, (2003)
  • [15] Kristiansen T, Faltinsen O M., Modelling of current loads on aquaculture net cages, Journal of Fluids and Structures, 34, pp. 218-235, (2012)
  • [16] Chen C, Zhao Y, Li Y, Et al., Numerical analysis of hydrodynamic behaviors of two net cages with grid mooring system under wave action, China Ocean Engineering, 26, 1, pp. 59-76, (2012)
  • [17] Klebert P, Lader P, Gansel L, Et al., Hydrodynamic interactions on net panel and aquaculture fish cages: A review, Ocean Engineering, 58, pp. 260-274, (2013)
  • [18] Cifuentes C, Kim M H, Sims N A, Et al., Coupled analysis of a SPM buoy-feeder-cage system for offshore aquaculture[C], The Twenty-fourth International Ocean and Polar Engineering Conference, (2014)
  • [19] Fredriksson D W, DeCew J, Lader P, Et al., A finite element modeling technique for an aquaculture net with laboratory measurement comparisons, Ocean Engineering, 83, pp. 99-110, (2014)
  • [20] Kristiansen T, Faltinsen O M., Experimental and numerical study of an aquaculture net cage with floater in waves and current, Journal of Fluids and Structures, 54, pp. 1-26, (2015)
123