Analysis of the Laminar Flow in the Hydraulic Poppet Valve Based on the Fluent 3D Solver

摘要

The hydraulic poppet valve is an important basic component in Fluid drive and control technology, whose characteristic of the inner flow filed influences directly the valve's performance. The main work is numerical calculation and simulation of flow field inside the cone valve in the hydraulic hammer. The first step is 3d modeling of cone valve. By using fluent software the study analyses and discusses the flow field of hydraulic cone valve including flow velocity field, pressure field and flow line distribution when the valve core's cone angle is 30°, analyses the cause of the vortexes' position and strength, and finds out the main reason causing energy consumption. The results of the study show that by the optimal design of the cone valve seat, the density degree of the flow and the size of the vortex is reduced, the energy loss is reduced, negative pressure zone also changes, the noise is reduced and the energy utilization is improved.