A study of flow-field distribution between the flapper and nozzle in a hydraulic servo-valve

Author

Jacob ; Mchenya, M. ; Zhang, Shengzhuo ; Li, Songjing

Author_Institution

Dept. of Fluid Control & Autom., Harbin Inst. of Technol., Harbin, China

fYear

2011

fDate

17-20 Aug. 2011

Firstpage

658

Lastpage

662

Abstract

This study is aiming to give understanding of flow field distribution in the pilot stage of a flapper-nozzle hydraulic servo-valve and to study the characteristics between the flow rate and the pressure drop over the nozzle. After introducing the construction and working principle of the hydraulic servo valve, the mathematical models for the flow field simulation based on standard k-ϵ model for turbulent flow are built. The simulation results show the velocity flow field distribution at different conditions. The characteristics between the flow rate of the pilot stage and the pressure drop over the nozzle are also given by simulation. The simulation results provide theoretical basis for the design and understanding of flow field distribution in the pilot stage of a flapper-nozzle hydraulic servo-valve.

Keywords

flow simulation; hydraulic systems; mathematical analysis; nozzles; servomechanisms; turbulence; valves; flapper; flow field distribution; flow field simulation; flow rate; flow velocity; hydraulic servo valves; nozzles; pressure drop; standard k-ε model; turbulent flow; Analytical models; Fluids; Mathematical model; Permanent magnet motors; Simulation; Solid modeling; Torque; flapper-nozzle; flow field distribution; large eddy simulation; servo-valve;

fLanguage

English

Publisher

ieee

Conference_Titel

Fluid Power and Mechatronics (FPM), 2011 International Conference on

Conference_Location

Beijing

Print_ISBN

978-1-4244-8451-5

Type

conf

DOI

10.1109/FPM.2011.6045844

Filename

6045844