Global dynamic response analysis of oil storage tank in finite water depth: Focusing on fender mooring system parameter design

Wan, Ling; Han, Mengmeng; Jin, Jingzhe; Zhang, Chi; Magee, Allan; Hellan, Øyvind; Wang, Chen

doi:10.1016/j.oceaneng.2017.11.021

Cited by 18 publications

(7 citation statements)

References 15 publications

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“…Then, these properties can be transferred into the time domain for the global analysis considering the bridge structural properties, couplings and external forces. This method may be termed as hybrid time and frequency domain method (Cummins 1962;Naess and Moan 2013), and has been widely employed in various offshore applications (Wu and Moan 1996;Kashiwagi 2004;Karimirad and Moan 2012;Gao et al 2016;Michailides et al 2016;Wan et al 2015Wan et al , 2016Wan et al , 2018Cheng et al 2018a). In the cases where strongly nonlinear hydrodynamic phenomena are expected, such as slamming or green water problems (Wan et al 2017a), the linear hydrodynamic model is not suitable anymore, and modifications or nonlinear hydrodynamic models are needed.…”

Section: Numerical Modelmentioning

confidence: 99%

Parametric study and dynamic response analysis of three single curved discrete pontoon floating bridges

Wan

Dai²,

Jiang

et al. 2021

Ships and Offshore Structures

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In this paper, three curved floating bridge concepts with a uniform span of 500 m and different radii of curvature are proposed for the crossing of the coastal waters in Singapore. The bridge girder is supported by 4 pontoons along the bridge length and the two ends are connected to the shore. Three different girder cross-sections are considered. Static analysis is first carried out considering the bridge's self-weight, water current forces and various tidal conditions. Next, eigen value and regular wave analyses are performed to assess the effect of bridge radius, cross-sectional rigidity and end connection on the bridge behaviour. Based on the results, several bridge configurations are selected for further study. Finally, irregular wave analysis is carried out to investigate the realistic bridge performance under operational and extreme environmental conditions. Conclusions are drawn based on the simulation results. Recommendations on the design parameters for further investigations are made.

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Section: Numerical Modelmentioning

confidence: 99%

Parametric study and dynamic response analysis of three single curved discrete pontoon floating bridges

Wan

Dai²,

Jiang

et al. 2021

Ships and Offshore Structures

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“…This structure embodies an effective platform for the development of marine resources. Large oil and gas storage facilities [2], floating airports [3], offshore tourist resorts [4], fish farming factories [5], and marine renewable energy platforms [6] are typical examples. Lamas-Pardo et al [7] documented a review of VLFS concepts for coastal and offshore uses.…”

Section: Introductionmentioning

confidence: 99%

Hydrodynamic Sensitivity of Moored and Articulated Multibody Offshore Structures in Waves

Jiang

Moctar

Schellin

2021

JMSE

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Within the framework of Space@Sea project, an articulated modular floating structurewas developed to serve as building blocks for artificial islands. The modularity was one of the keyelements, intended to provide the desired flexibility of additional deck space at sea. Consequently, the layout of a modular floating concept may change, depending on its functionality and environmental condition. Employing a potential-flow-based numerical model (i.e., weakly nonlinear Green function solver AQWA), this paper studied the hydrodynamic sensitivity of such multibody structures to the number of modules, to the arrangement of these modules, and to the incident wave angle. Results showed that for most wave frequencies, their hydrodynamic characteristics were similar although the floating platforms consisted of a different number of modules. Only translational horizontal motions, i.e., surge and sway, were sensitive to the incident wave angle. The most critical phenomenon occurred at head seas, where waves traveled perpendicularly to the rotation axes of hinged joints, and the hinge forces were largest. Hydrodynamic characteristics of modules attached behind the forth module hardly changed. The highest mooring line tensions arose at low wave frequencies, and they were caused by second-order mean drift forces. First-order forces acting on the mooring lines were relatively small. Apart from the motion responses and mooring tensions, forces acting on the hinge joints governed the system’s design. The associated results contribute to design of optimal configurations of moored and articulated multibody floating islands.

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“…Such phenomena were identified from a numerical and experimental study by the authors on a subsystem of a novel floating hydrocarbon storage facility in coastal waters [22]. The subsystem combines a special frame-like floating breakwater with two unique floating hydrocarbon storage tanks [23][24][25]. The special floating breakwater is formed by four interconnected barges with an internal moonpool.…”

Section: Introductionmentioning

confidence: 99%

Effectiveness of Floating Breakwater in Special Configurations for Protecting Nearshore Infrastructures

Zhang

Magee

2021

JMSE

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This paper investigates the effectiveness of floating breakwaters consisting of two barges (L-shape), three barges (U-shape), four barges (barge frame), and conventional single floating breakwater. The floating breakwaters of different spatial layouts have sheltered internal gaps/moonpools when compared to their conventional counterparts. The motions of these floating breakwaters and their effectiveness in wave transmission and motion reduction of the protected floating bodies are evaluated. The study is conducted based on a subsystem of a floating hydrocarbon storage facility that combines a floating breakwater with two floating tanks, studied previously. Numerical models based on linear potential flow theory are built for these floating breakwaters with and without the floating tanks. The numerical models of the barge frame are validated through laboratory experiments, and the dipole damping lids to reduce the resonant fluid motions in the gaps/moonpools are calibrated with experimental results. The L-shape floating breakwater is found effective in reducing wave transmissions without the presence of the floating tanks, while the barge frame is the most effective in the motion reduction of the floating tanks. In addition, significant fluid resonant motions are identified for all investigated floating breakwaters, including the conventional one. Orienting the structure obliquely can improve the performance of the floating breakwaters of special configurations, especially the barge frame. The results and findings show the importance of considering the protected floating structures in the analysis when designing floating breakwaters for many types of marine structures, including floating fish farms and floating cities in coastal waters.

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Global dynamic response analysis of oil storage tank in finite water depth: Focusing on fender mooring system parameter design

Cited by 18 publications

References 15 publications

Parametric study and dynamic response analysis of three single curved discrete pontoon floating bridges

Parametric study and dynamic response analysis of three single curved discrete pontoon floating bridges

Hydrodynamic Sensitivity of Moored and Articulated Multibody Offshore Structures in Waves

Effectiveness of Floating Breakwater in Special Configurations for Protecting Nearshore Infrastructures

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