DocumentCode :
3270573
Title :
Flow simulation in steering rotary valve
Author :
Zhang, Qunfeng ; Zhang, Xiaokun ; Hu, Danni ; Liu, Yongjun
Author_Institution :
Sch. of Civil Eng. & Archit., Beijing Jiao Tong Univ., Beijing, China
fYear :
2011
fDate :
15-17 April 2011
Firstpage :
2208
Lastpage :
2212
Abstract :
Rotary valve is mostly used as a control valve in hydraulic steering system. The existences of flow separation, cavitation and other phenomena in hydraulic steering system usually generate flow noise. Reynolds averaged Navier-Stokes (RANS) equations, Rayleigh cavitation model and RNG k-ε turbulence model equations governing the flow field hydraulic steering system were solved with finite volume method (FVM) based on unstructured mesh and the compressibility of hydraulic oil was taken into account. The flow characteristics of rotary valve with different relative angle between spool and valve body, the different diameters and length of outlet pipe entrance, the relative angle between the axis of outlet pipe and valve body were analysed. Results show that the design of the axis of outlet pipe intersecting to the axis of valve body, an appropriate diameter and short entrance of outlet pipe can reduce the risk of cavitation generation in rotary valve.
Keywords :
Navier-Stokes equations; cavitation; finite volume methods; flow separation; flow simulation; hydraulic systems; pipes; steering systems; turbulence; valves; RANS equations; RNG k-ε turbulence model equations; Rayleigh cavitation; Reynolds averaged Navier-Stokes equations; control valve; finite volume method; flow separation; flow simulation; hydraulic steering system; outlet pipe entrance; steering rotary valve; Boundary conditions; Equations; Mathematical model; Noise; Steering systems; Transient analysis; Valves; cavitation; hydraulic steering system; rotary valve; simulation; turbulence model;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Electric Information and Control Engineering (ICEICE), 2011 International Conference on
Conference_Location :
Wuhan
Print_ISBN :
978-1-4244-8036-4
Type :
conf
DOI :
10.1109/ICEICE.2011.5777116
Filename :
5777116
Link To Document :
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