Validation of a dynamic mooring model coupled with a RANS solver

Jiang, Changqing; Moctar, Ould el; Paredes, Guilherme Moura; Schellin, Thomas E.

doi:10.1016/j.marstruc.2020.102783

Cited by 20 publications

(16 citation statements)

References 15 publications

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“…Although accurate results were obtained using a morphing grid scheme in our previous works [19,20], for motions in rough sea conditions large mesh deformations were reported in our subsequent study [21], which yielded skewed shapes and unacceptable aspect ratios for grid cells and, consequently, induced numerical instabilities. To dispose of these limitations and still use the same mesh for our subsequent systematic simulations, we adopted the overset mesh scheme.…”

Section: The Viscous Flow Solvermentioning

confidence: 70%

“…The lumped mass dynamic mooring model MoorDyn [26] was adopted, which was validated against experimental measurements by coupling it with a potential flow solver [27] and a viscous flow solver [20]. As shown in Figure 3, it combined the effects of mass, external forces, and inertial reactions at a finite number of nodes along a mooring cable.…”

Section: The Dynamic Mooring Modelmentioning

confidence: 99%

“…Symbol T i represents the tension in each line segment, C i is a numerical internal damping force to improve stability, W i , is the net buoyancy force, B i , is the interaction with the sea bed, and D pi and D qi are the transverse and tangential drag forces, respectively. This process is described in detail in [27], and additional information on the coupling between the mooring model and the viscous flow solver is documented in [20].…”

Section: The Dynamic Mooring Modelmentioning

confidence: 99%

“…The computed buoy motions, the natural periods, and the amount of hydrodynamic damping were compared with experimental measurements. For different mooring models, using quasi-static mooring models coupled with potential flow solvers or viscous flow solvers [20], we found that the hydrodynamic damping of the moored floating structure was generally underpredicted [21].…”

Section: Introductionmentioning

confidence: 96%

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Mooring-Configurations Induced Decay Motions of a Buoy

Jiang

Moctar

Schellin

2021

JMSE

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The hydrodynamic damping of a buoy stationed with three different mooring configurations was estimated using a Navier-Stokes (NS) equations solver coupled with a dynamic mooring model. The mooring configurations comprised a catenary system, a catenary system with sub floaters, and a catenary system with sub floaters and clump weights. Systematic simulations were achieved by adopting the overset grid scheme instead of the conventional morphing grid scheme, which required regenerating the entire mesh when the buoy’s initial position changed, thereby avoiding mesh distortions and numerical instabilities. Motion decay simulations in heave, pitch, and surge were conducted with and without various mooring systems. The analyzed results comprised decaying oscillating motions, natural periods, and associated amounts of damping. The mooring systems influenced not only restoring force characteristics, but also total damping of the moored buoy, which demonstrated the importance of considering mooring-induced damping when investigating moored offshore structures.

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Section: The Viscous Flow Solvermentioning

confidence: 70%

Section: The Dynamic Mooring Modelmentioning

confidence: 99%

Section: The Dynamic Mooring Modelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 96%

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Mooring-Configurations Induced Decay Motions of a Buoy

Jiang

Moctar

Schellin

2021

JMSE

Self Cite

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“…by simply adding a force that is proportional to the structure displacement [19,20]. For more sophisticated, non-linear mooring models, coupling of the NWT to external toolboxes is commonly used, examples of which can be found in [94,183]. Available mooring toolboxes for OpenFOAM include MooDy [184] and MoorDyn [185].…”

Section: Mooring Modellingmentioning

confidence: 99%

A review on the modelling of wave-structure interactions based on OpenFOAM

Huang¹,

Li²,

Benites³

et al. 2022

Preprint

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The modelling of wave-structure interaction (WSI) has significant applications in understanding natural processes as well as securing the safety and efficiency of marine engineering. Based on the technique of Computational Fluid Dynamics (CFD) and the opensource simulation framework -OpenFOAM, this paper provides a state-of-the-art review of WSI modelling methods. The review categorises WSI scenarios and suggests their suitable computational approaches, concerning a rigid, deformable or porous structure in regular, irregular, non-breaking or breaking waves. Extensions of WSI modelling for wave-structureseabed interactions and various wave energy converters are also introduced. As a result, the present review aims to help understand the CFD modelling of WSI and guide the use of OpenFOAM for target WSI problems.

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Viscous Field Methods

Moctar

Schellin

2021

Numerical Methods for Seakeeping Problems

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Validation of a dynamic mooring model coupled with a RANS solver

Cited by 20 publications

References 15 publications

Mooring-Configurations Induced Decay Motions of a Buoy

Mooring-Configurations Induced Decay Motions of a Buoy

A review on the modelling of wave-structure interactions based on OpenFOAM

Viscous Field Methods

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