Abstract: This paper presents a new finite elements method for two-dimensional analysis of fluid transients. A 2-D fluid transient model for hydraulic transmission system has been established, and an analytic program is developed. The method can be used to calculate the pressure and velocity distributions in transient for time-dependent, slightly compressible and viscous flow. The open-closed characteristics determined by the method for mate control valve of high speed forging hydraulic press will ensure the whole machine with much slighter hydraulic surges.

Key words: Finite element analysis, Fluid, Transient