Reducing roll motion by passive free surface tanks
Roll stabilisation of motorised vessels plays an important part in reducing passenger discomfort and increasing safety and cargo capacity. Passive free surface tanks are considered a low-cost stabilising method, which is efficient at all speeds without increasing hull resistance. In this study, a ma...
| Published in: | Volume 7: Ocean Space Utilization; Professor Emeritus J. Randolph Paulling Honoring Symposium on Ocean Technology |
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| Main Authors: | , |
| Format: | Other Non-Article Part of Journal/Newspaper |
| Language: | English |
| Published: |
American Society of Mechanical Engineers
2014
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| Subjects: | |
| Online Access: | https://orbit.dtu.dk/en/publications/fae6e773-4572-4f1f-9e3c-364155fe2b81 https://doi.org/10.1115/omae2014-23299 |
| Summary: | Roll stabilisation of motorised vessels plays an important part in reducing passenger discomfort and increasing safety and cargo capacity. Passive free surface tanks are considered a low-cost stabilising method, which is efficient at all speeds without increasing hull resistance. In this study, a mathematical model for evaluating the performance of a passive free surface tank is established. This is done by coupling a roll model to a fluid flow model. As a numerical example, the seakeeping abilities of a container vessel are evaluated. The necessary methods for performing the simulation are presented and the design of a free surface tank is explained. The effects of the passive free surface tank are evaluated and a significant damping effect is observed, particularly in cases with resonant roll. |
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