FLUID FLOW MODELING IN THE SPOOL AND SLEEVE OF AN ELECTRO-HYDRAULIC POWER AMPLIFIER

This article deals with the initial data for modeling a spool valve. It describes the volumetric solid model of the flowing part of the high precision spool pair layouts in the electro-hydraulic power amplifier; the generation of the finite-element mesh of the solid model; the physical and mathematical model of the fluid flow process; and the estimations and their analysis. The pressure characteristics of the spool valve under different load are calculated. 3D modeling of fluid flow through the annular clearance between the spool and sleeve in the electro-hydraulic power amplifier (fluid leak modeling) is performed.