Understanding the fluid–structure interaction from wave diffraction forces on CALM buoys: numerical and analytical solutions

Amaechi, Chiemela Victor; Wang, Facheng; Ye, Jianqiao

doi:10.1080/17445302.2021.2005361

Cited by 23 publications

(17 citation statements)

References 110 publications

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“…The exploration of fossil products has been the greatest application of pipelines [1][2][3][4] and other tubular structures like marine hoses [5][6][7][8][9]. It has been used in bending, relaxing, straightening, reeling and pipe-laying [10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Numerical Study on Plastic Strain Distributions and Mechanical Behaviour of a Tube under Bending

et al. 2022

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Tubular pipe structures have been used in various applications—domestic, aviation, marine, manufacturing and material testing. The applications of tubular pipes have been considered greatly in the installation of tubular pipes, marine risers and pipe bending. For the investigation of plastic strains and the mechanical behaviour of a tube under bending, considerations were made utilising an exponent model with assumptions on the plane strain. The bending moment, wall thickness effect, cross-sectional distribution, stresses during bending and neutral layer boundaries were all presented as necessary theoretical formulations on the physics of tubular pipe bending. This model was based on the analytical and numerical investigation. In principle, the application can be observed as the spooling of pipes, bending of pipes and reeling. Comparisons were made on two models developed on the finite element analysis in Simscale OpenFEA, namely the linear-elastic and the elasto-plastic models. This study presents visualization profiles using plastic strain to assess its effect on the tubular pipes. This can increase due to the limitation of plastic deformation on the composite materials selected.

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Section: Introductionmentioning

confidence: 99%

Numerical Study on Plastic Strain Distributions and Mechanical Behaviour of a Tube under Bending

et al. 2022

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“…The dynamic amplitude factor or dynamic amplification factor (DAF) is depicted simply as the response factor for the dynamic response amplitude versus the static response amplitude. In that respect, the relationship for the Dynamic Amplification Factor of hose (DAFhose) is given in Equation (23). The static response amplitude is the response amplitude operator obtained during static analysis.…”

Section: Dynamic Amplification Factor (Daf)mentioning

confidence: 99%

“…𝑆𝑡𝑎𝑡𝑖𝑐 𝑅𝑒𝑠𝑝𝑜𝑛𝑠𝑒 𝐴𝑚𝑝𝑙𝑖𝑡𝑢𝑑𝑒 (𝑢𝑛𝑐𝑜𝑢𝑝𝑙𝑒𝑑 ℎ𝑜𝑠𝑒 𝑚𝑜𝑑𝑒𝑙 𝑙𝑎𝑐𝑘𝑖𝑛𝑔 ℎ𝑦𝑑𝑟𝑜𝑑𝑦𝑛𝑎𝑚𝑖𝑐 𝑙𝑜𝑎𝑑𝑠) (23) In real environmental ocean conditions, accurate prediction of the amplitude motion of the offshore structure must be performed before any offshore operation is carried out, as specified in design guidelines. This first design analysis is conducted initially in the Coupled Model static stage.…”

Section: 𝐷𝐴𝐹 𝐻𝑜𝑠𝑒 = 𝐷𝑦𝑛𝑎𝑚𝑖𝑐 𝑅𝑒𝑠𝑝𝑜𝑛𝑠𝑒 𝐴𝑚𝑝𝑙𝑖𝑡𝑢𝑑𝑒 (𝑐𝑜𝑢𝑝𝑙𝑒𝑑 ℎ𝑜𝑠𝑒 𝑚𝑜𝑑𝑒𝑙 ℎ𝑎...mentioning

confidence: 99%

“…These are utilised for discharging, loading, and ocean monitoring. Marine bonded hoses are light conduit structures for fluid transportation from an offshore platform to a tanker/FPSO/FSO [18][19][20][21][22][23][24][25]. Since advances into deep water explorations have increased the need for more sustainable and cost-efficient platforms, these marine structures have received increased attention for application in offshore loading and offloading operations.…”

Section: Introductionmentioning

confidence: 99%

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Investigation on Hydrodynamic Characteristics, Wave–Current Interaction and Sensitivity Analysis of Submarine Hoses Attached to a CALM Buoy

Amaechi

Wang

2022

JMSE

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There is an increase in the utilization of the floating offshore structure (FOS) called Catenary Anchor Leg Mooring (CALM) buoys and the attached marine hoses due to the increasing demand for oil and gas products. These hoses are flexible and easier to use but have a short service life of about 25 years. They are adaptable in ocean locations of shallow, intermediate and deep waters. In this research, a numerical model was developed using a coupling method modeled by utilizing ANSYS AQWA and Orcaflex (Orcina Ltd., Ulverston, UK) dynamic models of the CALM buoy hoses. Two cases were comparatively studied: Lazy-S and Chinese-lantern configurations, under ocean waves and current. Comparisons were also made between coupled and uncoupled models. This research presents the hydrodynamic characteristics with a sensitivity analysis on the influence of waves, current attack angle, soil gradient, soil stiffness and environmental conditions that influence the performance of marine hoses. The study comparatively looked at the configurations from dynamic amplification factors (DAF) on marine hoses. The results show that marine hoses can be easily configured to suit the designer’s need, seabed soil type, seabed topography and the profiles that are useful for manufacturers. The sensitivity analysis also shows the effect of hose parameters on its hydrodynamic behavior from the wave–current interaction (WCI).

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“…The buoy's size is determined by the amount of counter buoyancy needed to keep the anchor chains in place, and the anchor chains are determined by environmental factors and the size of the vessel. Some experimental investigations have been conducted on the CALM buoy by varying the buoy skirts [56][57][58][59][60]. Edward & Dev [60] accessed the motion response of the CALM buoy with some empirical estimation on the viscous damping.…”

Section: Introductionmentioning

confidence: 99%

Experimental Study on Motion Characterisation of CALM Buoy Hose System under Water Waves

Amaechi

Wang

2022

JMSE

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The application of marine bonded hoses has increased in recent times, due to the need for more flexible conduits and flexible applications in the offshore industry. These marine structures include Catenary Anchor Leg Moorings (CALM) buoys and ocean monitoring buoys. Their attachments include floating hoses, submarine hoses and submarine cables. However, the structural performance challenges of a CALM buoy system from its hydrodynamics water waves and other global loadings, have led to the need for this investigation. In this study, a detailed presentation on the motion characterisation of the CALM buoy hose system is presented. The CALM buoy is a structure with six degrees of freedom (6DoF). A well-detailed experimental presentation on the CALM buoy hose model conducted in Lancaster University Wave Tank is presented using three novel techniques, which are: a digital image captured using Imetrum systems, using an Akaso 4K underwater camera, using wave gauges arranged in a unique pattern and using underwater Bluetooth sensors. The buoy model was also found to respond uniquely for each motion investigated under water waves. The results showed that the higher the profile, the higher the response of the buoy. Thus, this study confirms the existence of flow patterns of the CALM buoy while floating on the water body.

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Understanding the fluid–structure interaction from wave diffraction forces on CALM buoys: numerical and analytical solutions

Cited by 23 publications

References 110 publications

Numerical Study on Plastic Strain Distributions and Mechanical Behaviour of a Tube under Bending

Numerical Study on Plastic Strain Distributions and Mechanical Behaviour of a Tube under Bending

Investigation on Hydrodynamic Characteristics, Wave–Current Interaction and Sensitivity Analysis of Submarine Hoses Attached to a CALM Buoy

Experimental Study on Motion Characterisation of CALM Buoy Hose System under Water Waves

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