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RISS 인기검색어
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- 저자 : 신장용(J.R. Shin) (검색결과 3 건)
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액체 화물창내의 SLOSHING 고유주기 산정에 관한 연구
신장용(J.R. Shin),최경식(K.S. Choi),강신영(S.Y. Kang),김현수(H.S. Kim) 한국해양공학회 1994 韓國海洋工學會誌 Vol.8 No.2
Recently in the design of super tankers or LNG carriers which transport a large amount of liquid in the cargo holds, the structural damage due to liquid sloshing becomes an important problem. The impact pressure from sloshing is most violent when the liquid motion of a partially filled tank is in resonance with the motion of a ship. In this paper the sloshing natural periods in liquid cargo tanks are estimated for partially filled tanks with various geometries. Especially the sloshing periods of baffled tanks which are often installed to reduce liquid motion and sloshing forces are calculated. A variational method is adopted to analyze the baffled tank of arbitrary filling depth of liquid. In this approach the liquid domain is divided into several subdomains in which the analytic solutions are presented. In consideration of abrupt shape change due to baffles, the kinetic and potential energy are calculated from the velocity potentials in each subdomain. By minimizing the Hamilton's functional, the sloshing natural periods are estimated and the results are compared with experimental and numerical results.
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액체 화물창내의 SLOSHING 고유주기 산정에 관한 연구
신장용,강신영,최경식,김현수 韓國海洋大學校 附設 海洋科學技術硏究所 1993 硏究論文集 Vol.2 No.1
Recently in the design of super tankers or LNG carriers which transport a large amount of liquid in the cargo holds, the structural damage due to liquid sloshing becomes an important problem. The impact pressure from sloshing is most violent when the liquid motion of a partially filled tank is in resonance with the motion of a ship. In this paper, to avoid the possible structural damages on tank walls the sloshing natural periods in liquid cargo tanks are estimated for partially filled tanks with various geometries. Especially the sloshing periods of baffled tanks which are often installed to reduce liquid motion and sloshing forces, are calculated and the results are compared with numerical results.
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신장용,강신영,최경식 韓國海洋大學校 附設 海洋科學技術硏究所 1994 硏究論文集 Vol.3 No.-
The fluid motion inside a partially filled tank is called "sloshing" and it is of great concern to structural designers of ships. Sloshing analysis is significant, especially in the design of liquid cargo vessels such as LNG carriers and crude oil tankers, since sloshing loads attain such considerable value enough to cause structural damage. In this paper, three dimensional governing equations and exciting forces are derived for the study of sloshing phenomena. In order to include the nonlinearity that occurs at the fluid-tank interface and to avoid the complex boundary conditions on moving walls, a fixed coordinate system to the moving tank is adopted.
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