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이강인(K. I. Lee),박민수(M. S. Park),조용훈(Y. H. Cho),조윤환(Y. H. Cho),성영은(Y. E. Sung),주종남(C. N. Chu) 한국정밀공학회 2006 한국정밀공학회 학술발표대회 논문집 Vol.2006 No.5월
Mobile fuel cell is highlighted in these days because mobile fuel cell can contain more energy than existing batteries. Nowadays mobile devices like cellular phone, PMP(portable multi-media player), notebook, and etc. need more energy. But exiting batteries like Li-ion or Ni-MH batteries are not going to satisfy such demands. In this paper, mobile fuel cell is developed. Its size is 50*70*8㎜ and it is made of aluminium plates. The fuel cell type is PEM and the fuel is pure hydrogen and oxygen.
이강남(K. N. Lee),정광효(K. H. Jung),채영준(Y. J. Chae),박일룡(I. R. Park),서성부(S. B. Suh) 한국전산유체공학회 2015 한국전산유체공학회지 Vol.20 No.2
In this study, the green water phenomena on rectangular shaped structure is numerically simulated by STAR-CCM+ to investigate the flow pattern including the velocity profiles in bubbly water flow. 5 phases of the formation of green water in front of and over the rectangular shaped structure is simulated at the design condition which is scaled down by 1:125 from FPSO operating in GOM. All numerical results are compared with the experimental results performed in a two dimensional wave flume. The water deformation due to the green water are obtained by the high speed CCD camera with employing the shadow graphy technique, which is allowed to take the bubbly water flow into images. A series of image taken by shadow graphy technique is analyzed with MQD method to calculate the velocity in bubbly water flow.