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http://dx.doi.org/10.3744/SNAK.2019.56.1.011

Frequency Domain Analysis for Hydrodynamic Responses of Floating Structure using Desingularized Indirect Boundary Integral Equation Method  

Oh, Seunghoon (Korea Research Institute of Ships and Ocean Engineering)
Jung, Dongho (Korea Research Institute of Ships and Ocean Engineering)
Cho, Seok-kyu (Korea Research Institute of Ships and Ocean Engineering)
Nam, Bo-woo (Korea Research Institute of Ships and Ocean Engineering)
Sung, Hong Gun (Korea Research Institute of Ships and Ocean Engineering)
Publication Information
Journal of the Society of Naval Architects of Korea / v.56, no.1, 2019 , pp. 11-22 More about this Journal
Abstract
In this paper, a Rankine source method is applied and validated to analyze the hydrodynamic response of a three-dimensional floating structure in the frequency domain. The boundary value problems for radiation and diffraction problem are solved by using a desingularized indirect boundary integral equation method (DIBIEM). The DIBIEM is simpler and faster than conventional methods based on the numerical surface integration of Green's function because the singularities of Green's function are located outside of fluid regions. In case of floating structure with complex geometry, it is difficult to desingularize the singularities of Green's function consistently. Therefore a mixed approach is carried out in this study. The mixed approach is partially desingularized except singularities of the body. Wave drift loads are calculated by the middle-field formulation method that is mathematically simple and has fast convergence. In order to validate the accuracy of the developed program, various numerical simulations are carried out and these results are analyzed and compared with previously published calculations and experiments.
Keywords
Rankine source method; Desingularized indirect boundary integral equation method (DIBIEM), Hydrodynamic response; Mean wave drift load; Floating structure;
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Times Cited By KSCI : 1  (Citation Analysis)
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