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대형 팬의 효율적 유량 조절을 위한 루버 개폐각 상관관계
노태현(T.H. Noh),이상진(S.J. Lee),장세명(S.M. Chang) 한국전산유체공학회 2007 한국전산유체공학회 학술대회논문집 Vol.2007 No.-
In this paper, we researched a parametric study in flow control system using louver with numerical method. Generally, for the large fans with constant rotational speed, the louver can be used to control the flow rate. The opening and closing of louver can make a some change of flow properties generated by a large fan. To develop the relation betwee the opening angle of louver and flow rate(or pressure difference), we simulated the flow past the modelled louver installed in a virtual wind tunnel. For the various angles, the mean flow properties are investigated and parameterized with a given boundary condition. The research result can be used directly to design the flow control system of large constant-speed fans, which are often applide to petrolic refinery system.
원심압축기 임펠러의 효율최적화를 위한 반익 유동에 대한 수치연구
김성수(S. S. Kim),왕학민(H. M. Wang),노태현(T. H. Noh),김성수(S. S Kim),장세명(S. M. Chang) 한국전산유체공학회 2012 한국전산유체공학회 학술대회논문집 Vol.2012 No.11
A splitter-blade is optimized for the efficiency to determine the location of a system of impeller for the centrifugal compressor using CFD technique. The splitter-blade formed the steady flow at the exit of impeller as well as the dividing flow of the full-blade system. The cross-sectional area of the flow depending on the starting position and angle should be set between full-blade and splitter-blade. Changing the cross-sectional area divided by the splitter-blade, we can stabilize the dominant part of exit flow. Therefore, in this study, the parameters of the starting position and angle effect on determining the optimized efficiency of splitter-blade of impeller system. CFD is shown to be very helpful for this procedure of design.