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An experimental and numerical investigation of a box-shaped object in moonpool; a three-dimensional study

An experimental and numerical investigation of a box-shaped object in moonpool; a three-dimensional study

Category
Part of a book/report
Abstract
The forced heave motion of a dummy ship model with moonpool, including a fixed box-shaped object, was realized experimentally in the Towing tank at MARINTEK. The blockage effect caused by a large object was investigated. Regular and irregular forced heave motions were imposed. In the regular motion tests, four forcing amplitudes, and 11 forcing periods near the piston-mode resonance period were tested. PVC3D (Potential Viscous Code) was used to study the regular heave motion problem numerically. PVC3D is a code developed at MARINTEK, in collaboration with Statoil RDI, which couples a Naviér-Stokes solver with the linear potential flow theory for the free-surface waves. PVC3D has in previous studies proven to be fast, robust and accurate for marine resonance problems. It has not previously been validated for object in moonpool. Here, a validation study is presented. The moonpool response is well predicted by PVC3D both for the case of empty moonpool and moonpool with object. The studied object has a non-negligible blockage effect in resonant condition.
Language
English
Author(s)
Affiliation
  • SINTEF Ocean / Energi og transport
  • SINTEF Ocean / Skip og havkonstruksjoner
  • Statoil
Year
2015
Published in
International Conference on Offshore Mechanics and Arctic Engineering [elektronisk ressurs] : [proceedings]
ISSN
1523-651X
Publisher
ASME Press
Book
ASME 2015 34th International Conference on Ocean, Offshore and Arctic Engineering
Booklet
2015
ISBN
978-0-7918-5647-5