Analytical study on the hydrodynamic coefficients and the wave excitation forces of a horizontal circular cylinder = 수평 원형실린더의 유체 동역학적 계수와 파랑 가진력에 대한 해석적 연구

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While there have been a number of numerical and experimental studies to find the hydrodynamic coefficients and wave excitation forces of a floating horizontal circular cylinder, no complete analytical attempt has yet been made to estimate those coefficients and forces. Here, we present the analytical solutions to the problem of a horizontal circular cylinder. Instead of solving the cylinder problem directly, first, we solve the problem of a floating rectangular box analytically. Then, by mapping those solutions into the cylinder problem via Close-fit transformation, we obtain the desired results with a comparison to the existing numerical and experimental results. Regarding the wave excitation force, the analytical results of multipole expansion method are also compared together. Even though the multipole expansion have mostly been studied in numerical way, analytical method is introduced in this paper mathematically. Additionally, results for asymmetrically immersed cases are also presented by a composite function of Close-fit conformal mapping and parallel translation.
Advisors
Cho, Yeunwooresearcher조연우researcher
Description
한국과학기술원 :기계공학과,
Publisher
한국과학기술원
Issue Date
2017
Identifier
325007
Language
eng
Description

학위논문(석사) - 한국과학기술원 : 기계공학과, 2017.2,[vi, 64 p. :]

Keywords

Hydrodynamic coefficients; wave excitation force; horizontal circular cylinder; velocity potential; Close-fit conformal mapping; 유체 동역학적 계수; 파랑 가진력; 수평 원형 실린더; 속도 포텐셜; Close-fit 등각사상

URI
http://hdl.handle.net/10203/242844
Link
http://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=675109&flag=dissertation
Appears in Collection
ME-Theses_Master(석사논문)
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