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http://dx.doi.org/10.3744/SNAK.2019.56.5.396

Comparative Study on the Radiation Techniques for the Problem of Floating Body Motion with Forward Speed  

Oh, Seunghoon (Korea Research Institute of Ships and Ocean Engineering)
Publication Information
Journal of the Society of Naval Architects of Korea / v.56, no.5, 2019 , pp. 396-409 More about this Journal
Abstract
In this paper, a comparative study on the radiation techniques for the motion analysis of the three dimensional floating structure with the forward speed was carried out. The Sommerfeld radiation condition, the damping technique, and the point shift technique were used for the comparative study. Radiated wave patterns and hydrodynamic coefficients of the heave motion of floating structure with the forward speed were compared and analyzed. The characteristics and limitations of each radiation technique were analyzed through the calculation results. To overcome the limitations of conventional radiation techniques, the hybrid radiation technique combining the Sommerfeld radiation condition with the damping technique was proposed. It is confirmed that the proposed method, the Hybrid radiation technique, improves the limitation of the speed range and the dissipation of the wave of the conventional radiation technique. The motion analysis code of the three dimensional floating structure with the forward speed based on the Rankine source method with hybrid radiation technique was developed. In order to validate the developed code, hydrodynamic analyses were carried and compared with published experiments.
Keywords
Radiation technique; Forward speed; Wave pattern; Hydrodynamic coefficient; Rankine source method;
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Times Cited By KSCI : 1  (Citation Analysis)
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