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Experimental study on the low-speed manoeuvring capability of a twin-lift decommissioning system.
- Source :
- Ships & Offshore Structures; Jan2022, Vol. 17 Issue 1, p51-63, 13p
- Publication Year :
- 2022
-
Abstract
- A simple dynamic positioning (DP) system has been developed for the scaled model of a novel twin-lift decommissioning operation. Such a decommissioning solution involves the two semi-submerged vessels transporting the topside to another vessel. And it requires the synchronised motion of the two topside-carried vessels at a low speed, under the environmental disturbances. In order to ensure efficiency and safety, model tests with a scaling factor of 1:37 have been carried out in the wave tank. The DP system in the experiment consists of a 3-Degree of Freedom (3DoF) motion equation, a Proportional–Integral–Derivative (PID) controller and a thrust allocation algorithm. This paper investigates the motion response of each vessel under the random wave and constant wind of different angles, to assess the low-speed manoeuvring performance. It is found that the given control scenarios allow the twin-lift decommissioning system to yield good motion performance under operational conditions. [ABSTRACT FROM AUTHOR]
- Subjects :
- EQUATIONS of motion
ECOLOGICAL disturbances
MOTION
DYNAMIC positioning systems
Subjects
Details
- Language :
- English
- ISSN :
- 17445302
- Volume :
- 17
- Issue :
- 1
- Database :
- Complementary Index
- Journal :
- Ships & Offshore Structures
- Publication Type :
- Academic Journal
- Accession number :
- 155632470
- Full Text :
- https://doi.org/10.1080/17445302.2020.1816763