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전진 속도를 가지는 부유체 운동 문제에 대한 방사기법 비교 연구Comparative Study on the Radiation Techniques for the Problem of Floating Body Motion with Forward Speed

Other Titles
Comparative Study on the Radiation Techniques for the Problem of Floating Body Motion with Forward Speed
Authors
오승훈
Issue Date
2019
Publisher
대한조선학회
Keywords
Radiation technique(방사 기법); Forward speed (전진속도); Wave pattern(파형); Hydrodynamic coefficient(유체동역학적 계수) Rankine source method(랜킨 소오스 방법)
Citation
대한조선학회 논문집, v.56, no.5, pp 396 - 409
Pages
14
Journal Title
대한조선학회 논문집
Volume
56
Number
5
Start Page
396
End Page
409
URI
https://www.kriso.re.kr/sciwatch/handle/2021.sw.kriso/374
DOI
10.3744/SNAK.2019.56.5.396
ISSN
1225-1143
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.
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친환경해양개발연구본부 (심해공학연구센터)
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