Mathematical Modeling and Flow Field Simulation of Pre-stage of Jet Pipe Servo Valve

赵小龙; 姜本九; 朱玉川

doi:10.13433/j.cnki.1003-8728.20240003

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Mathematical Modeling and Flow Field Simulation of Pre-stage of Jet Pipe Servo Valve

更新时间：2026-04-23

- Mathematical Modeling and Flow Field Simulation of Pre-stage of Jet Pipe Servo Valve
- Mechanical Science and Technology for Aerospace Engineering Vol. 45, Issue 2, Pages: 365-372(2026)
- 作者机构：
  
  1. 中国航发西安动力控制科技有限公司技术中心,西安,710077
  2. 南京航空航天大学机电学院,南京,210016
- 作者简介：
- 基金信息：
- DOI：10.13433/j.cnki.1003-8728.20240003
  CLC：
- Published：2026
- 稿件说明：
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赵小龙, 姜本九, 朱玉川. Mathematical Modeling and Flow Field Simulation of Pre-stage of Jet Pipe Servo Valve[J]. Mechanical Science and Technology for Aerospace Engineering, 2026, 45(2): 365-372.
DOI：

赵小龙, 姜本九, 朱玉川. Mathematical Modeling and Flow Field Simulation of Pre-stage of Jet Pipe Servo Valve[J]. Mechanical Science and Technology for Aerospace Engineering, 2026, 45(2): 365-372. DOI： 10.13433/j.cnki.1003-8728.20240003.

摘要

目前射流管伺服阀前置级理论模型常用流型系数修正射流紊动带来的影响，但没有揭示射流紊动的具体影响机理，反射油液的影响也常被忽略。为准确描述前置级的压力特性与流量特性，基于动量定理，建立了前置级数学模型，模型中揭示了射流紊动对接收孔压力恢复过程的具体影响机理，同时考虑压力恢复过程中反射油液的影响，得到其压力特性与流量特性，并通过Fluent流场仿真，与数学模型形成相互验证。研究结果表明，数学模型结果与Fluent仿真结果具有很好的一致性，该型射流管伺服阀前置级压力增益为11.547 MPa/mm，流量增益为3.270 L/（min·mm）。

Abstract

At present

the pre-stage theoretical model of jet tube servo valve usually uses flow pattern coefficient to correct the influence of jet turbulence

but does not reveal the specific influence mechanism of jet turbulence

and the influence of reflected oil is often ignored. In order to describe the pressure characteristics and flow characteristics of the pre-stage accurately

a mathematical model of the pre-stage was established based on momentum theorem

in which the specific influence mechanism of jet turbulence on the pressure recovery process of the receiving hole was revealed and the influence of reflected oil in the pressure recovery process was considered. The pressure characteristics and flow characteristics were obtained

and the flow field simulation by Fluent and mathematical model were mutually verified. The research results show that the mathematical model results are in good agreement with the Fluent simulation results. The pressure gain of the pre-stage of the jet pipe servo valve is 11.547 MPa/mm

and the flow gain is 3.270 L/(min·mm).

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Related Institution

Technology Center, Xi'an Aero Power Control Technology Co., Ltd.

College of Mechanical and Electrical Engineering, Nanjing University of Aeronautics and Astronautics

AVIC Nanjing Servo Control System Co., Ltd.

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