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규칙파중 시간영역 스트립이론을 이용한 비선형 유탄성 해석
조일형(IL-HYOUNG CHO),한성곤(SUNG-KON HAN),권승민(SEUNG-MIN KWON) 한국해양공학회 2005 韓國海洋工學會誌 Vol.19 No.4
A nonlinear time-domain strip theory for vertical wave loads and ship responses is to be investigated. The hydrodynamic memory effect is approximated by a higher order differential equation without convolution. The ship is modeled as a non-uniform Timoshenko beam. Numerical calculations are presented for the S175 Containership translating with the forward speed in regular waves. The approach described in this paper can be used in evaluating ship motions and wave loads in extreme wave conditions and validating nonlinear phenomena in ship design.
김범석(Bum-suk Kim),김우준(Woo-june Kim),이상래(Sang-lae Lee),한성곤(Sung-kon Han),김만응(Mann-eung Kim) 대한기계학회 2009 대한기계학회 춘추학술대회 Vol.2009 No.11
Rotor blade of a wind turbine is an essential component which converts wind energy into mechanical energy to generate electricity, and its aerodynamic and dynamic properties determine the performance, efficiency and stability of the whole wind turbine system. As power capacity of a single wind turbine becomes larger and to satisfy the economic efficiency in the offshore wind farm, developing a large wind turbine is required and the importance of designing a larger blade is emphasized. This paper presents the process of aerodynamic design for a 3㎿ wind turbine blade by using BEMT and conducts three-dimensional CFD analyses to evaluate the design validity. The results obtained from this study can be applied extensively for designing a larger blade which has the capacity of more than 3㎿.