Discharge coefficient of pilot poppet valve at low Reynolds number

doi:10.1016/j.flowmeasinst.2022.102141

	Discharge coefficient of pilot poppet valve at low Reynolds number
	Min, Wei1,3 ; Li, Cheng 1; Wang, Hongyu 1; Zheng, Zhi1 ; Zhao, Jianfeng2 ; Ji, Hong1
	2022-06
发表期刊	Flow Measurement and Instrumentation
ISSN	0955-5986
卷号	85
摘要	The discharge coefficient (Cq) is an important parameter that affects the flow capacity of hydraulic valve. Many researches of Cq focused on main stage poppet (half cone angle is 30°–45°), weather the results are suitable for pilot stage poppet (half cone angle is 10°–15°) is still uncertain. In this paper, the discharge coefficient of different pilot stage poppet valves are measured, and Fluid-Structure Interaction is used to analyze the influence of the orifice submerged jet on the discharge coefficient, visualization experiment is used to study the flow field at the tail of the valve port under different poppet structures. The results show that the stability of the flow field structure at the front of the valve port and the end of the valve port has an important influence on the discharge coefficient, and Cq of the pilot poppet valve still can be written as Cq = mRe0.5 under the condition of low Reynolds number, however the proportional coefficient m been obviously smaller than poppet valve as main stage. In poppet valve with orifice, the m value of the Cq is between 0.04 and 0.05 of the flat-end poppet, and the variation range obviously smaller than ball-end poppet valve, the reason is that a stable annular vortex was formed at the flat-end poppet port front end, which made the pressure of the poppet surface insensitive to the flow change. While in poppet valve without orifice, the m value of the Cq is between 0.02 and 0.04 of the flat-end poppet, and the variation range obviously smaller than ball-end poppet valve, the reason is that the flow field presented various pattern at the ball-end poppet port back end, which drives the m value of the Cq under different working conditions fluctuate greatly. © 2022 Elsevier Ltd
关键词	Flow fields Orifices Reynolds number Visualization Vortex flow Condition Cone angle Discharge coefficients Flow capacity Flow field structure Fluid-structure interaction Low Reynolds number Pilot poppet valve Poppet-valves Variations ranges
DOI	10.1016/j.flowmeasinst.2022.102141
收录类别	EI ; SCIE
语种	英语
WOS研究方向	Engineering ; Instruments & Instrumentation
WOS类目	Engineering, Mechanical ; Instruments & Instrumentation
WOS记录号	WOS:000784308000001
出版者	Elsevier Ltd
EI入藏号	20220911719567
EI主题词	Fluid structure interaction
EI分类号	631.1 Fluid Flow, General
来源库	WOS
引用统计	被引频次：1[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	https://ir.lut.edu.cn/handle/2XXMBERH/158042
专题	能源与动力工程学院外国语学院科学技术处（军民融合领导小组办公室）
通讯作者	Min, Wei
作者单位	1.Lanzhou Univ Technol, Sch Energy & Power Engn, Lanzhou 730050, Peoples R China; 2.Lanzhou Univ Technol, Sch Foreign Language Sch, Lanzhou 730050, Peoples R China; 3.Lanzhou Univ Technol Lanzhou, Dept Energy & Power Engn, Lanzhou 730050, Peoples R China
第一作者单位	能源与动力工程学院; 兰州理工大学
通讯作者单位	能源与动力工程学院; 兰州理工大学
第一作者的第一单位	能源与动力工程学院
推荐引用方式 GB/T 7714	Min, Wei,Li, Cheng,Wang, Hongyu,et al. Discharge coefficient of pilot poppet valve at low Reynolds number[J]. Flow Measurement and Instrumentation,2022,85.
APA	Min, Wei,Li, Cheng,Wang, Hongyu,Zheng, Zhi,Zhao, Jianfeng,&Ji, Hong.(2022).Discharge coefficient of pilot poppet valve at low Reynolds number.Flow Measurement and Instrumentation,85.
MLA	Min, Wei,et al."Discharge coefficient of pilot poppet valve at low Reynolds number".Flow Measurement and Instrumentation 85(2022).