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균일 흐름 중에 실린더에 작용하는 양력의 감소 법에 대한 실험 연구
손무성(Moo-Sung SON),조효제(Hyo-jae JO),도덕희(Deog-Hee Doh),강승훈(Seung-Hun KANG) 한국항해항만학회 2008 한국항해항만학회 학술대회논문집 Vol.2008 No.공동학술
The effect of VIV(vortex-induced vibration) was recently considered significantly in the long slender structure. Nowaday, a strake is used to remove VIV, but that has some disadvantages such as a difficulty in assembling strake with the main frame, a higher cost and the increase of the total weight. Furthermore, it was reported that the strake could induce the heave motion. In this study, the experiment with the circular cylinder covered some film was executed to reduce the side effects. The result from the experiment shows that the film is managed to reduce VIV by removing the lift force.
균일 흐름 중에 실린더에 작용하는 양력의 감소 법에 대한 실험 연구
손무성(Moo-Sung SON),조효제(Hyo-jae JO),도덕희(Deog-Hee Doh),강승훈(Seung-Hun KANG) 한국마린엔지니어링학회 2008 한국마린엔지니어링학회 학술대회 논문집 Vol.2008 No.-
The effect of VIV(vortex-induced vibration) was recently considered significantly in the long slender structure. Nowaday, a strake is used to remove VIV, but that has some disadvantages such as a difficulty in assembling strake with the main frame, a higher cost and the increase of the total weight. Furthermore, it was reported that the strake could induce the heave motion. In this study, the experiment with the circular cylinder covered some film was executed to reduce the side effects. The result from the experiment shows that the film is managed to reduce VIV by removing the lift force.
최인상(In-Sang Choi),오석문(Seog-Moon Oh),손무성(Moo-Sung Son),최인찬(In-Chan Choi) 한국철도학회 2005 한국철도학회논문집 Vol.8 No.6
In this paper, we consider the train-fleet assignment problem to determine fleet assignment and seat allocation synchronously. An integer programming model of the problem and a decomposition-based solution approach are developed to handle short-term period deterministic origin-destination demands. The primary objective used in the developed model is to maximize the total number of passengers transported during peak load periods, such as Chuseok national holiday period. Thus, in developing the model we choose to profit-pursuing system. We also show how the proposed model can be readily modified to incorporate profit-maximization. Using the empirical data sets provided by a Korean railroad company, we have tested the proposed solution approach and carried out various comparison analyses by varying traffic demand patterns and train schedules. The computational experiments reveal that the proposed solution approach produces high quality solutions in reasonable computation time.