The paper analyzes the flow through a directional control valve for load –sensing application by means of a multi-phase and multi-component CFD approach. Numerical modeling includes both cavitation and aeration; in particular, the Rayleigh-Plesset equation and the inertia controlled growth model for bubble formation are adopted. The effects of gas release and vapor formation as well as turbulence on the main valve metering characteristics are investigated. The results show a remarkable influence of the aeration phenomena on the recirculating zones downstream of the metering area and thus on the cavitation onset region.
Multi-phase and Multi-component CFD Analysis of a Load - Sensing Proportional Control Valve / Bigliardi, Elisa; Francia, Marco; Milani, Massimo; Montorsi, Luca; Paltrinieri, Fabrizio; Stefani, Matteo. - ELETTRONICO. - 28:1(2015), pp. 421-426. (Intervento presentato al convegno 8th Vienna International Conferenceon Mathematical Modelling — MATHMOD 2015 tenutosi a Vienna, Austria nel 18-20 february 2015) [10.1016/j.ifacol.2015.05.114].
Multi-phase and Multi-component CFD Analysis of a Load - Sensing Proportional Control Valve
BIGLIARDI, ELISA;FRANCIA, MARCO;MILANI, Massimo;MONTORSI, Luca;PALTRINIERI, Fabrizio;STEFANI, MATTEO
2015
Abstract
The paper analyzes the flow through a directional control valve for load –sensing application by means of a multi-phase and multi-component CFD approach. Numerical modeling includes both cavitation and aeration; in particular, the Rayleigh-Plesset equation and the inertia controlled growth model for bubble formation are adopted. The effects of gas release and vapor formation as well as turbulence on the main valve metering characteristics are investigated. The results show a remarkable influence of the aeration phenomena on the recirculating zones downstream of the metering area and thus on the cavitation onset region.
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