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Towards a reliable method for extrapolation of propulsion performance for vessels with twin-crp-pod system
Abstract
The study presents power performance prediction of an Ultra Large Container Ship (ULCS) with hybrid twin-crp-pod propulsion system. Twin crp-pod propulsion system is a combination of three concepts: twin screw, contra-rotating propellers (crp) and conventional shaft propellers with pod propulsors behind. The presented study shows the current extrapolation method for crp propulsion systems and tries to point out its weaknesses. As a case study, a 400 m ULCS has been investigated in full-scale and in model scales of 24 and 37.416. The analyses were carried out for all scales with use of CFD numerical methods and for the scale of 37.416 based on towing tank tests. All the results have been extrapolated with the same method and results have been compared. The investigations clearly show differences in delivered power prediction extrapolated from towing tank results giving the maximum value and from CFD made to scale of 24 the minimum value. Finally, conclusions on possible sources of differences, including the numerical and analytical methods are presented.
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Authors (4)
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Marek Necel mgr inż.
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Sören Brüns
Cite as
Full text
- Publication version
- Accepted or Published Version
- DOI:
- Digital Object Identifier (open in new tab) 10.1016/j.oceaneng.2024.118758
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Details
- Category:
- Articles
- Type:
- artykuły w czasopismach
- Published in:
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OCEAN ENGINEERING
no. 310,
ISSN: 0029-8018 - Language:
- English
- Publication year:
- 2024
- Bibliographic description:
- Pruszko H., Reichel M., Necel M., Brüns S.: Towards a reliable method for extrapolation of propulsion performance for vessels with twin-crp-pod system// OCEAN ENGINEERING -Vol. 310,iss. 2 (2024),
- DOI:
- Digital Object Identifier (open in new tab) 10.1016/j.oceaneng.2024.118758
- Sources of funding:
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- Free publication
- Verified by:
- Gdańsk University of Technology
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