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이중섭(C. S. Yi),심규진(K. J. Shim),이용훈(Y. H. Lee),정한식(H. S. Chung),정효민(H. M. Jeong) 한국동력기계공학회 2006 한국동력기계공학회 학술대회 논문집 Vol.- No.-
This research is focused on the application for the catalytic converter in the motorcycle engine. Present research model type is monolithic catalytic converter and this type has been widely used for satisfaction and the regulations of pollutant emissions in automobiles. The flow characteristics in a single monolith automotive catalytic converter were investigated by using a computational simulation method. The numerical mode with a general cartesian coordinates system is assumed as the steady and unsteady state, incompressible flow and κ - ε standard turbulence model. The inlet boundary condition of catalytic converter is assumed as a uniform distributed flow and it was varied from 2m/s to 20m/s. Also, boundary condition of unsteady state was a pressure condition by the experimental result. There has no chemical reaction in this study, so we discuss only to the effect of flow uniformity in the catalyst converter. Simulation results lead us to the conclusion that the fluid uniformity of megaphone type catalytic converter is higher than that of a base type one. By comparing with various types, megaphone type has more suitable for applicable to motorcycle.
PIV를 이용한 육상 수조식 양식장의 유동특성에 관한 연구
김보한(B. H. Kim),김세현(S. H. Kim),이중섭(C. S. Yi),심규진(K. J. Shim),이철재(C. J. Lee),정효민(H. M. Jeong),정한식(H. S. Chung) 한국동력기계공학회 2004 한국동력기계공학회 학술대회 논문집 Vol.- No.-
The aquaculture tank is used for a breeding fish by using sea water. This aquaculture system is free from the marine pollutions and outside sea water conditions. But a land aquaculture tank needs more wide space and the equipment of circulating sea water system. The design of land aquaculture tank is very important to the growth of fish. Therefore, the water circulating system affects to the water temperature and velocity of flow in a land aquaculture tank. There are many kinds of the aquarium tank, the general type have circle shape and rectangular shape which is rounded four corner. But the optimum design of aquarium researches seems to be lacking at the view of engineering. In this study, we adopted the rectangular shape with round off a corner type. The PIV was adopted to study the basic flow characteristics of experimental model. This paper is intended as an investigation of the flow characteristics in aquarium tank, and we could obtained on the flow pattern and velocity distributions.