This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Metering Characteristics of a Closed Center Load - Sensing Proportional Control Valve
Abstract:
The investigation of the flow through the metering section of hydraulic components plays a fundamental role in the design and optimization processes. In this paper the flow through a closed center directional control valve for load -sensing application is studied by means of a multidimensional CFD approach.
In the analysis, an open source fluid-dynamics code is used and both cavitation and turbulence are accounted for in the modeling. A cavitation model based on a barotropic equation of state and homogeneous equilibrium assumption, including gas absorption and dissolution in the liquid medium, is adopted and coupled to a two equation turbulence approach.
Both direct and inverse flows through the metering section of the control valve are investigated, and the differences in terms of fluid - dynamics behavior are addressed In particular, the discharge coefficient, the recirculating regions, the flow acceleration angle and the pressure and velocity fields are investigated and compared.
Recommended Content
| Technical Paper | A CFD Multidimensional Approach to Hydraulic Components Design |
| Journal Article | Cavitating Flows in Hydraulic Multidimensional CFD Analysis |
| Technical Paper | Mechanical Cushion Design Influence on Cylinder Dynamics |