Influence of nozzle structure on the flow field of the prestage of nozzle flapper servo valve Online publication date: Tue, 21-Feb-2023
by Jian Zhang; Jia Yang Li; Tao Wang; Zhan Song Qian
International Journal of Hydromechatronics (IJHM), Vol. 6, No. 1, 2023
Abstract: This paper studies the influence of nozzle structure on the flow field of the prestage of the nozzle flapper servo valve. In this paper, the finite volume method is used to simulate the influence of the nozzle flapper electro-hydraulic servo valve nozzle structure on the prestage flow field. Firstly, this article introduces the theoretical basis used by the simulation research institute, and then establishes the nozzle diameters of 0.25 mm, 0.3 mm, 0.35 mm, 0.4 mm and 0.45 mm. The finite volume method simulation model of the prestage flow field in the case of ring deviation and the simulation model is calculated. Studies have shown that the nozzle structure has a significant effect on the flow field of the prestage. The flow field of the prestage is better when the nozzle diameter is 0.25 mm. The offset of the nozzle ring will cause the pressure distribution of the flow field to be asymmetric and the pressure drop at the nozzle will be large, and will cause problems such as reduced flow stability.
Existing subscribers:
Go to Inderscience Online Journals to access the Full Text of this article.
If you are not a subscriber and you just want to read the full contents of this article, buy online access here.Complimentary Subscribers, Editors or Members of the Editorial Board of the International Journal of Hydromechatronics (IJHM):
Login with your Inderscience username and password:
Want to subscribe?
A subscription gives you complete access to all articles in the current issue, as well as to all articles in the previous three years (where applicable). See our Orders page to subscribe.
If you still need assistance, please email subs@inderscience.com
Our Blog 
Follow us on Twitter 
Visit us on Facebook