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  4. CFD simulations and model experiments of offshore support vessel with heavy suspended load in waves
 
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CFD simulations and model experiments of offshore support vessel with heavy suspended load in waves

Citation Link: https://doi.org/10.15480/882.3306
Publikationstyp
Conference Paper
Date Issued
2019-09
Sprache
English
Author(s)
Araki, Motoki  
Otsubo, Kazuhisa  
Ishida, Kei  
Hasegawa, Kenta  
Sato, Hiroshi  
Ohashi, Kunihide  
Herausgeber*innen
Fluiddynamik und Schiffstheorie M-8  
TORE-DOI
10.15480/882.3306
TORE-URI
http://hdl.handle.net/11420/8916
Article Number
4
Citation
11th International Workshop on Ship and Marine Hydrodynamics (IWSH2019), Paper 4
Contribution to Conference
11th International Workshop on Ship and Marine Hydrodynamics (IWSH2019)  
Nowadays, since, subsea equipment becoming larger and heavier, risks of the lifting/lowering operations by offshore support vessel (OSV) are also increasing and thereby predicting coupling motions of the vessel and whirling equipment and hydrodynamic forces acting on the suspended load in splash zone are important to prevent clash accidents and damage on lifted subsea equipment etc. Model experiment using OSV with heavy suspended load was conducted in Deepsea Basin in National Maritime Research Institute (NMRI). The experiments were carried out with several regular and irregular waves and heading angles. The OSV was moored with 4 lined spring system. During the experiments, the motions of moored OSV and suspended load were measured with visual 3D motion capture system. Computation fluid dynamics (CFD) simulations were conducted using CFD Solver NAGISA which was developed in NMRI to investigate the dynamics and hydrodynamical aspects. Dynamic overset grid method and multibody dynamics model were applied to reproduce the coupling motions of the vessel and suspended load. The CFD simulations were carried out when the suspended load is in the splash zone to predict hydrodynamic forces acting on the lifted equipment. The CFD simulation results were validated with the model experiment comparing with motions of OSV and suspended load.
Subjects
Computational Fluid Dynamics (CFD)
Crane operation in wave
Multibody dynamics
Offshore construction
DDC Class
600: Technik
Lizenz
http://rightsstatements.org/vocab/InC/1.0/
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