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http://dx.doi.org/10.7837/kosomes.2022.28.7.1244

Development of Numerical Computation Techniques for the Free-Surface of U-Tube Type Anti-roll Tank  

Sang-Eui Lee (Department of Mechatronics Convergence Engineering, Changwon National University)
Publication Information
Journal of the Korean Society of Marine Environment & Safety / v.28, no.7, 2022 , pp. 1244-1251 More about this Journal
Abstract
Marine accidents due to a loss of stability, have been gradually increasing over the last decade. Measures must be taken on the roll reduction of a ship. Amongst the measures, building an anti-roll tank in a ship is recognized as the most simple and effective way to reduce the roll motion. Therefore, this study aims to develop a computational model for a U-tube type anti-roll tank and to validate it by experiment. In particular, to validate the developed computational model, the height of the free surface in the tank was measured in the experiment. To develop a computational model, the mesh dependency test was carried out. Further, the effects of a turbulence model, time step size, and the number of iterations on the numerical solution were analyzed. In summary, a U-tube type anti-roll tank simulation had to be performed accurately with conditions of a realizable k-𝜖 turbulence model, 10-2s time step size, and 15 iterations. In validation, the two cases of measured data from the experiment were compared with the numerical results. In the present study, STAR-CCM+ (ver. 17.02), a RANS-based commercial solver was used.
Keywords
U-tube Type Anti-roll Tank; Free Surface Effect; Volume of Fluid Method; Computational Fluid Dynamics; Finite Volume Method;
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