STATIONARY AXIAL FLOW FORCE ANALYSIS ON COMPENSATED SPOOL VALVES
Keywords:
CFD simulation, compensated spool valves, steady state flow forcesAbstract
The paper deals with an application of a simplified numerical analysis, based on Computational Fluid Dynamics (CFD), of the flow field inside the compensated port connections of a reference spool valve. The aim of the study was to evaluate a proposed analysis procedure, for the major effects related to the presence of steady state flow forces affect-ing the spool equilibrium. Starting from an initial summary of the dimensional analysis proposed by the authors to ap-proach the application of CFD to hydraulic components, the paper presents the results of three commonly used compen-sating profiles for two reference spool positions. In order to validate the simulation, the curves obtained for one of the three geometries are compared with the experimental data obtained on an equivalent port connection of a commercial distributor.
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