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최종락(J. Choi),신희종(H.J. Shin),김원섭(W. Kim),허남건(N. Hur) 한국전산유체공학회 2018 한국전산유체공학회지 Vol.23 No.2
In the tractor transaxle, the components such as gears, shafts and bearings cause the oil churning so that the air may flow into the hydraulic suction pipe, and the hydraulic components may be mis-operated by the entrained air. In order to simulate the phenomenon of air inflow into the hydraulic pipe, three-dimensional transient multi-phase numerical simulations were carried out by adopting an overset mesh technique for rotating parts. Several possible locations of hydraulic suction pipe on the transaxle casing are considered in the present study to minimize the amount of air intake to the suction pipe due to the air/oil churning flow caused by the rotating parts. As a result of a present study a new location of the hydraulic suction pipe on the transaxle casing is suggested. With experimental test and some structural design considerations, this design change can be adopted in a final design of the transaxle casing.