Effect of bottom counterweight and cable distribution on the hydrodynamic response of the gravity net cage

ABSTRACT To investigate the influence of the bottom counterweight and cable distribution on hydrodynamic response of the gravity net cage, a single cylindrical gravity net cage with different cable distributions and counterweights was analysed by numerical simulation. The floating collar was simplified as a hollow ring that has the same mechanical properties as one double-row floating pipe. The influence of the current, wave and cable distribution on the floating collar motions and cable loads were investigated. Analysis results illustrated that the volume reduction coefficient of net structure and the maximum tension of cable are mainly affected by the counterweight and cable distribution, respectively. In addition, the deformation of the floating collar is mainly affected by the wave height. The cylindrical gravity net cage with the 80 kg × 32 bottom counterweight and the ‘*’-layout cable distribution is fit for the sea state of the Yellow Sea Cold Water Mass.

[1]  W. Yoo,et al.  Stability analysis of spar platform with four mooring cables in consideration of cable dynamics , 2021 .

[2]  Xiao-dong Bai,et al.  Hydrodynamic performance of the floating fish cage under extreme waves , 2021, Ocean Engineering.

[3]  C. Soares,et al.  Dynamic wave induced loads on a moored flexible cylindrical net cage with analytical and numerical model simulations , 2021 .

[4]  S. Mohapatra,et al.  Finite Element Analysis of the Effect of Currents on the Dynamics of a Moored Flexible Cylindrical Net Cage , 2021, Journal of Marine Science and Engineering.

[5]  Hongde Qin,et al.  Fluid-structure interactions of cage based aquaculture: From structures to organisms , 2020 .

[6]  M. Ketabdari,et al.  Semi-analytical and experimental study on array of elastic circular floaters vertical motions in regular sea waves , 2020 .

[7]  M. Pant,et al.  Primary School and Urban Residential Neighborhood - A Study of Koteswor, Kathmandu , 2020 .

[8]  B. Zamora-Parra,et al.  Numerical analysis of fish farm behaviour in real operational conditions , 2020, Ships and Offshore Structures.

[9]  Chun-woo Lee,et al.  Accuracy improvement of numerical simulation with the determination of drag coefficients of floating collars , 2020 .

[10]  G. Dong,et al.  Experimental study on the effects of farmed fish on the hydrodynamic characteristics of the net cage , 2020 .

[11]  Hongde Qin,et al.  Dynamic response of floating collar and cage under waves and current , 2020 .

[12]  Giuliana Mattiazzo,et al.  Experimental Investigation of the Mooring System of a Wave Energy Converter in Operating and Extreme Wave Conditions , 2020, Journal of Marine Science and Engineering.

[13]  Hongde Qin,et al.  A physical model approach to nonlinear vertical accelerations and mooring loads of an offshore aquaculture cage induced by wave-structure interactions , 2020 .

[14]  K. Thiagarajan,et al.  Integrity assessment of an oyster farm mooring system through in-situ measurements and extreme environment modeling , 2019, Ocean Engineering.

[15]  Cristian Cifuentes,et al.  Hydrodynamic response of a cage system under waves and currents using a Morison-force model , 2017 .

[16]  Ryan S. Nicoll,et al.  Application of Wake Shielding Effects With a Finite Element Net Model in Determining Hydrodynamic Loading on Aquaculture Net Pens , 2017 .

[17]  Xiangqian Zhu,et al.  Dynamic analysis of a floating spherical buoy fastened by mooring cables , 2016 .

[18]  G. Dong,et al.  Hydrodynamic analysis of elastic floating collars in random waves , 2015 .

[19]  Odd M. Faltinsen,et al.  Experimental and numerical study of an aquaculture net cage with floater in waves and current , 2015 .

[20]  Yun-Peng Zhao,et al.  Numerical analysis of the elastic response of a floating collar in waves , 2015 .

[21]  Yun-Peng Zhao,et al.  Numerical investigation of the hydrodynamic behaviors of multiple net cages in waves , 2012 .

[22]  Atle Jensen,et al.  Experimental investigation of wave forces on net structures , 2007 .

[23]  Pål Lader,et al.  Dynamic properties of a flexible net sheet in waves and current—A numerical approach , 2006 .

[24]  Jin-Yuan Liu,et al.  Dynamical analysis of net cage structures for marine aquaculture: Numerical simulation and model testing , 2006 .

[25]  P. Lader,et al.  Experimental investigation of forces and geometry of a net cage in uniform flow , 2005, IEEE Journal of Oceanic Engineering.

[26]  David W. Fredriksson,et al.  Finite element modeling of net panels using a consistent net element , 2003 .

[27]  M. Føre,et al.  An integrated approach for monitoring structural deformation of aquaculture net cages , 2021 .

[28]  O. Faltinsen,et al.  The influence of fish on the mooring loads of a floating net cage , 2018 .

[29]  Wan-Suk Yoo,et al.  Suggested new element reference frame for dynamic analysis of marine cables , 2017 .

[30]  Bradley J. Buckham,et al.  Simulation of a High-Energy Finfish Aquaculture Site Using a Finite Element Net Model , 2011 .

[31]  Pål Lader,et al.  Current induced net deformations in full-scale sea-cages for Atlantic salmon (Salmo salar) , 2008 .