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http://dx.doi.org/10.26748/KSOE.2019.009

Study on Roll Motion Characteristics of a Rectangular Floating Structure in Regular Waves  

Kim, Min-Gyu (Department of Naval Architecture and Ocean Engineering, Pusan National University)
Jung, Kwang-Hyo (Department of Naval Architecture and Ocean Engineering, Pusan National University)
Park, Sung-Boo (Department of Naval Architecture and Ocean Engineering, Pusan National University)
Lee, Gang-Nam (Department of Naval Architecture and Ocean Engineering, Pusan National University)
Park, Il-Ryong (Department of Naval Architecture and Ocean Engineering, Dong-Eui University)
Suh, Sung-Bu (Department of Naval Architecture and Ocean Engineering, Dong-Eui University)
Publication Information
Journal of Ocean Engineering and Technology / v.33, no.2, 2019 , pp. 131-138 More about this Journal
Abstract
This study focused on the roll motion characteristics of a two-dimensional (2D) rectangular floating structure under regular beam sea conditions. An experiment was conducted in a 2D wave tank for a roll free decay test in calm water and the roll motion in a range of regular waves with and without heave motion to investigate the motion response and heave influence on the roll motion. A numerical study was carried out using Reynolds-averaged Navier Stokes (RANS)-based CFD simulations. A grid convergence test was conducted to accurately capture the wave condition on the free surface based on the overset mesh and wave forcing method. It was found in the roll free decay test that the numerical results agreed well with the experimental results for the natural roll period and roll damping coefficient. It was also observed that the heave motion had an impact on the roll motion, and the responses of the heave and roll motion from the CFD simulations were in reasonable agreement with those from the experiment.
Keywords
Roll motion; Roll-heave interaction; Viscous damping; CFD; Regular wave;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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