NDLI: The effect of sloshing on the sway motions of 2D rectangular cylinders in regular waves

Content Provider	Springer Nature Link
Author	Lee, DongYoung Jo, GyungNam Kim, YunHo Choi, Hang S. Faltinsen, Odd M.
Copyright Year	2011
Abstract	In this paper, we investigated the effect of sloshing on the sway motions of two-dimensional rectangular cylinders in regular waves, bearing in mind possible applications for LNG-FPSO and LNG-FSRU. First, we carried out experiments for two models with different drafts, or the same draft but different filling ratios, in which the models were firmly connected to each other. The sway motion was measured with a noncontact video camera. This is an extension of Rognebakke and Faltinsen’s work for a single model (J Ship Res 47(3):208–221, 2003). It was found that the sway motion became small when the incident wave frequency was close to the lowest natural frequency of each model. The sway motion greatly increased when the wave frequency was higher than this frequency. The measured data were compared with numerical results obtained by a single-dominant multi-modal method; relatively good agreement was noted. However, the numerical results deviated from the experimental results near the lowest natural frequency of the smaller model, which was believed to be due to overturning waves, as observed during the experiment. Since this is out of the valid range for the single-dominant multi-modal method, other, more appropriate, methods such as the multi-dominant modal method must be applied instead.
Starting Page	323
Ending Page	330
Page Count	8
File Format	PDF
ISSN	09484280
Journal	Journal of Marine Science and Technology
Volume Number	16
Issue Number	3
e-ISSN	14378213
Language	English
Publisher	Springer Japan
Publisher Date	2011-06-17
Publisher Place	Japan
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	2D rectangular cylinders Sloshing Sway motion Natural frequency Tank test Multi-modal method Mechanical Engineering Automotive Engineering Engineering Design Engineering Fluid Dynamics Offshore Engineering
Content Type	Text
Resource Type	Article
Subject	Oceanography Ocean Engineering Mechanics of Materials Mechanical Engineering

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