Modeling Suction Pile Lowering Through the Splash Zone

Gordon, Robert B.; Grytøyr, Guttorm; Dhaigude, Mayuresh

doi:10.1115/omae2013-10136

Cited by 6 publications

(6 citation statements)

References 11 publications

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“…Various numerical studies have been performed to analyze the dynamic responses of lifting operations when the lifted objects cross the splash-zone. These stud-ies addressed the dynamic responses during the installation of different subsea assets such as subsea trees [1] , manifolds [2,3] , templates [4] , suction anchors [5] , and spools [6] . In a typical offshore lowering operation, the vessel hull is used to shield the lowered asset from the incident waves.…”

Section: Introductionmentioning

confidence: 99%

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Dynamic Analysis of Splash-zone Crossing Operation for a Subsea Template

Amer

Zhu³

2022

SUSTAIN MAR STRUCT

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Subsea templates are steel structures used to support subsea well components. Normally, offshore crane vessels are employed to install them to the target location on the seabed. Crossing the splash-zone during the lowering of a subsea template is considered the most critical phase during the installation due to slamming loads and needs to be studied to provide the operational weather criterion during the planning phase. In this study, dynamic response analysis has been carried out to evaluate the allowable sea states for the plash-zone crossing phase of the subsea templates. The numerical model of the lifting system, including the crane vessel and the subsea template, is firstly built in the state-of-the-art numerical program SIMA-SIMO. Then, dynamic analysis with time-domain simulations is carried out for the lifting system under various sea states. The disturbed wave field due to the shielding effects from the installation vessel is considered when calculating the hydrodynamic forces on the template. Statistical modelling of the dynamic responses from different wave realizations is used to estimate the extreme responses of various sea states. The application of the generalized extreme value distribution and Gumbel distribution in fitting the extreme responses is discussed. Moreover, the influence of the shielding effects from the vessel, as well as the influence of the changing size of the suction anchor on the hydrodynamic responses and the allowable sea states are studied.

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Section: Introductionmentioning

confidence: 99%

“…Thus, the prediction of the motion responses and the estimation of the slamming loads on the subsea template in the wave zone can be quite challenging. Several numerical studies were conducted to capture the dynamic responses when lowering subsea structures through the splash-zone [1,2,5,6,[13][14][15][16] .…”

Section: Introductionmentioning

confidence: 99%

Dynamic Analysis of Splash-zone Crossing Operation for a Subsea Template

Amer

Zhu³

2022

SUSTAIN MAR STRUCT

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“…Valen [25] modeled the lifting operation of ROV in the launching and recovery process, and results were compared with analysis based on DNV Recommended Practices. Gordon et al [26] simulated the splash zone crossing process of suction pile using SIMO, and the sensitivity of cable tension to key parameters was presented. Jacobsen and Leira [27] developed a 1-degree-of-freedom dynamic system to estimate the tension acting in the lifting wire, and comparisons were made with the results obtained by SIMO.…”

Section: Introductionmentioning

confidence: 99%

A Numerical Approach to the Dynamic Response of the Deployment System during a Circular Cylinder Crossing through the Wave Zone

Cai

Jiang

2017

Shock and Vibration

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The dynamic response of the deployment system while deploying a circular cylinder crossing wave surface and the following submerging process are investigated numerically. The present numerical approach is based on the combination of solution methods of cable dynamics and computational fluid dynamics (CFD). For the implementation of the numerical approach, a cosimulation platform based on a CFD code and MATLAB is developed to study the fluid-solid interaction problem in the process. To generate regular waves, a numerical wave tank is built based on a piston-type wave generation method and a wave damping method applying porous media. Numerical simulations are performed based on the cosimulation platform. The sensitivities of cable tension, velocity, and acceleration of deployed body to different input parameters are investigated, including phase angles, wave heights, and periods of regular waves and deploying velocities, and the effects of those input parameters on dynamic responses of the deployment system are also discussed.

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“…The instantaneous wave elevation can also be determined by an interpolation of the wave elevations at pre-defined points given the instantaneous position of the monopile. 4. Finally, perform the time-domain simulations of the coupled vessel-monopile system in irregular waves using the multi-body code SIMO and an external DLL that interacts with SIMO at each time step.…”

Section: Modelling Of the Shielding Effectsmentioning

confidence: 99%

“…Numerical studies have been commonly used to estimate the response characteristics of offshore lifting operations, including the installation of sub-sea templates [3], suction anchors [4], foundations and topsides of platforms, wind turbine components [5] and so on. A few experimental studies have also been conducted to obtain accurate hydrodynamic coefficients, e.g., the hydrodynamic mass and damping of ventilated piles [6], or to tune the critical parameters for numerical models, e.g., the damping or stiffness level of important support structures in the lifting system [7].…”

Section: Introductionmentioning

confidence: 99%