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Vane Pump 에서 Vane 의 Surface Texturing 에 따른 윤활특성 비교
김민규(M.G. Kim),정요한(Y.H. Jeong),박태조(T.J. Park),권광열(G.R. Kwon) 유공압건설기계학회 2015 유공압건설기계학회 학술대회논문집 Vol.2015 No.6
Vane pump performance is affected by the leakage and the friction between the relative moving parts. So, it is very important to understand the characteristics of lubricating relative moving parts in order to improve the relative performance of the vane pump. Therefore, many studies on the lubrication characteristics of the relative moving parts have been progress. Shape, mechanisms, operating conditions, clearance and material properties were trying to identify the lubricating properties as theoretical or experimental from a variety of perspectives. In this paper, using a commercial computational fluid dynamics(CFD) got a change of lubrication characteristics of the vane using a surface texturing. The results showed that the streamlines, pressure distributions, variations of friction force and leakage for surface texturing.
정요한(Y. H. Jeong ),신명준(M. J. Shin),박태조(T. J. Park),권광열(G. R. Kwon) 유공압건설기계학회 2014 유공압건설기계학회 학술대회논문집 Vol.2014 No.9
In this paper, a commercial computational fluid dynamics (CFD) code, FLUENT is used to investigate accurate flow characteristics in a direct-operated pressure relief valve. Streamline, velocity and pressure distributions, and momentum forces acting on poppet are obtained for various conditions such as inlet pressures, poppet angles and clearances. It is confirmed that, for small seat length, momentum forces can play a decisive role on the total force. As the length of the seat increases, pressure force acts dominant role.