Reducing roll motion by passive free surface tanks

Ulrik Dam Nielsen, Christian S. Nielsen

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

Abstract

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.
Original languageEnglish
Title of host publicationProceedings of the ASME 2014 33rd International Conference on Ocean, Offshore and Arctic Engineering
Number of pages12
PublisherAmerican Society of Mechanical Engineers
Publication date2014
Article numberOMAE2014-23299
DOIs
Publication statusPublished - 2014
Event33rd International Conference on Ocean, Offshore and Arctic Engineering - San Francisco, CA, United States
Duration: 8 Jun 201413 Jun 2014
http://www.asmeconferences.org/OMAE2014/

Conference

Conference33rd International Conference on Ocean, Offshore and Arctic Engineering
Country/TerritoryUnited States
CitySan Francisco, CA
Period08/06/201413/06/2014
Internet address

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