滚子柱塞泵的流量脉动与出口压力的数值模拟及实验验证

doi:10.3969/j.issn.1004-132X.2026.02.006

摘要/Abstract

摘要：

为研究滚子柱塞泵的流量脉动及出口压力特性，基于泵的运动规律和结构建立了计算流体动力学（CFD）数值模拟模型，并通过CFD数值模拟对其内部流场和压力场进行了详细分析。柱塞工作腔内部的压力和流量变化表明该泵不存在结构性流量脉动，但在吸排油腔与配流窗口切换时，由于压力差会发生流量倒灌。理论分析结果表明，在转速为3000 r/min、压力为5 MPa的条件下，流量脉动和压力脉动分别为23.4%和9.8%。最后，通过搭建出口压力测试专用实验台对滚子柱塞泵的出口压力进行了测试，实验数据显示该工况下泵的压力脉动值为11.25%，CFD模拟结果为9.8%。实验结果与CFD数值模拟结果吻合较好，验证了CFD数值模拟的准确性，并为后续减小流量脉动提供了参考。

关键词: 滚子柱塞泵, 流量脉动, 出口压力, 计算流体动力学, 数值模拟

Abstract:

In order to study the flow pulsation and outlet pressure characteristics of the roller piston pump， a CFD numerical simulation model was established based on the motion law and structure of the pump， and its internal flow field and pressure field were analyzed in detail through CFD numerical simulation. The results show that the pressure and flow changes inside the plunger working chamber indicate that there is no structural flow pulsation in the pump， but when the suction and discharge chambers and the distribution window were switched， flow backflow occurs due to the pressure difference. Theoretical analysis show that under the conditions of 3000 r/min and 5 MPa， the flow pulsation and pressure pulsation are as 23.4% and 9.8% respectively. Finally， the outlet pressure of the roller piston pump was tested by building a special test bench for outlet pressure testing. Experimental data show that the pressure pulsation value of the pump under this working condition is as 11.25%， and the CFD simulation result is as 9.8%. The experimental results were consistent with the CFD numerical simulation results， which verified the accuracy of the CFD numerical simulation and provided guidance for the subsequent reduction of pulsation.

Key words: roller piston pump, flow pulsation, outlet pressure, computational fluid dynamics（CFD）, numerical simulation

中图分类号:

TH137.52

张晨晨, 阮健, 李胜. 滚子柱塞泵的流量脉动与出口压力的数值模拟及实验验证[J]. 中国机械工程, 2026, 37(2): 304-314.

ZHANG Chenchen, RUAN Jian, LI Sheng. Numerical Simulation and Experimental Verification of Flow Pulsation and Outlet Pressure of Roller Piston Pump[J]. China Mechanical Engineering, 2026, 37(2): 304-314.

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链接本文: https://www.cmemo.org.cn/CN/10.3969/j.issn.1004-132X.2026.02.006

https://www.cmemo.org.cn/CN/Y2026/V37/I2/304

图/表 22

图1 滚子柱塞泵结构示意图

Fig.1 Structure schematic diagram of the roller piston pump

图2 柱塞A

Fig.2 Piston A

图3 柱塞A的运动规律

Fig.3 Movement law of piston A

图4 柱塞A与柱塞B的输出流量

Fig.4 Output flow of piston A and piston B

图5 滚子柱塞泵的仿真模型

Fig.5 Simulation model of roller piston pump

图6 滚子柱塞泵流体域的网格模型

Fig.6 Mesh model of the roller piston pump fluid domain

图7 出油管道网格设置

Fig.7 Grid settings for oil pipelines

图8 柱塞腔单元网格边界设置

Fig.8 Piston cavity unit mesh boundary settings

图9 滚子柱塞泵的整体网格模型

Fig.9 Overall mesh model of roller piston pump

表1 仿真参数

Tab.1 Simulation parameters

设置	参数名	类型	数值
物理性质	油液	密度/（kg·m $- 3$ ）	840
		动力黏度/（kg·m $- 3$ ·s $- 1$ ）	0.011
		弹性模量/Pa	10⁹
边界条件	压力进口	Pressure-inlet/MPa	0.4
边界条件	压力出口	Pressure-outlet/MPa	5
计算模型	湍流模型	RNG k-ε模型

表1 仿真参数

Tab.1 Simulation parameters

设置	参数名	类型	数值
物理性质	油液	密度/（kg·m $- 3$ ）	840
		动力黏度/（kg·m $- 3$ ·s $- 1$ ）	0.011
		弹性模量/Pa	10⁹
边界条件	压力进口	Pressure-inlet/MPa	0.4
边界条件	压力出口	Pressure-outlet/MPa	5
计算模型	湍流模型	RNG k-ε模型

图10 两泵单元边界条件设置

Fig.10 Boundary condition settings for two pump units

图11 滚子柱塞泵旋转不同角度下的速度矢量图

Fig.11 Speed vector diagram of roller piston pump at different rotation angles

图12 柱塞A左腔的压力变化

Fig.12 Pressure changes in the left chamber of piston A

图13 柱塞A左腔的流量变化

Fig.13 Flow changes in the left chamber of piston A

图14 柱塞A、B的工作腔及整泵的压力变化

Fig.14 Pressure changes in the working chambers of pistons A and B and the pump

图15 滚子柱塞泵旋转不同角度下的压力分布云图

Fig.15 Pressure distribution of roller piston pump at different rotation angles

图16 柱塞A、B的工作腔及叠加后的压力变化

Fig.16 Working chambers of pistons A and B and pressure changes after superposition

图17 滚子柱塞泵在3000 r/min、5 MPa下的压力与流量曲线

Fig.17 Pressure and flow curve of roller piston pump at 3000 r/min， 5 MPa

图18 实验样机

Fig.18 Experimental prototype

图19 出口压力测试实验台

Fig.19 Outlet pressure test bench

图20 原始信号与滤波信号

Fig.20 Original signal and filtered signal

图21 滚子柱塞泵在3000 r/min、5 MPa下的压力波动曲线

Fig.21 Pressure fluctuation curve of roller piston pump at 3000 r/min， 5 MPa

参考文献 28

[1]	王少萍，耿艺璇，石存. 失效物理与数据调制融合的航空液压泵寿命估计［J］. 航空学报， 2022， 43（10）： 527347.
	WANG Shaoping， GENG Yixuan， SHI Cun. Life Estimation of Aircraft Hydraulic Pump Based on Failure Physics and Data Driven［J］. Acta Aeronautica et Astronautica Sinica， 2022， 43（10）： 527347.
[2]	CHAO Qun， ZHANG Junhui， XU Bing， et al. A Review of High-speed Electro-hydrostatic Actuator Pumps in Aerospace Applications： Challenges and Solutions［J］. Journal of Mechanical Design， 2019， 141（5）： 050801.
[3]	路甬祥. 流体传动与控制技术的历史进展与展望［J］. 机械工程学报， 2001， 37（10）： 1-9.
	LU Yongxiang. Historical Progress and Prospects of Fluid Power Transmission and Control［J］. Chinese Journal of Mechanical Engineering， 2001， 37（10）： 1-9.
[4]	ERICSON L. Flow Pulsations in Fluid Power Machines-a Measurement and Simulation Study ［D］. Norrköping ：Linköpings Universitet， 2008.
[5]	欧阳小平，杨华勇，郭生荣，等. 现代飞机液压技术［M］. 杭州：浙江大学出版社， 2016.
	OUYANG Xianping， YANG Huayong， GUO Shengrong， et al. Modern Hydraulics for Aircrafts［M］. Hangzhou： Zhejiang University Press， 2016.
[6]	GAO Feng， OUYANG Xiaoping， YANG Huayong， et al. A Novel Pulsation Attenuator for Aircraft Piston Pump［J］. Mechatronics， 2013， 23（6）： 566-572.
[7]	JOHANSSON A. Design Principles for Noise Reduction in Hydraulic Piston Pumps： Simulation， Optimisation and Experimental Verification［D］. Norrköping ：Linköpings Universitet， 2005.
[8]	DEEKEN M. Simulation of the Reversing Effects of Axial Piston Pumps Using Conventional CAE Tools ［J］. Olhydraulik und Pneumatik： Zeitschrift fur Fluidtechnik·Aktorik， Steuerelektronik und Sensorik， 2002， 46（6）： 1-12.
[9]	DEEKEN M. Simulation of the Tribological Contacts in an Axial Piston Machine［C］∥Fluid Power Systems and Technology. ASME， 2004： 71-75.
[10]	EDGE K A， DARLING J. The Pumping Dynamics of Swash Plate Piston Pumps［J］. Journal of Dynamic Systems， Measurement， and Control， 1989， 111（2）： 307-312.
[11]	EDGE K A， DARLING J. Cylinder Pressure Transients in Oil Hydraulic Pumps with Sliding Plate Valves［J］. Proceedings of the Institution of Mechanical Engineers， Part B： Management and Engineering Manufacture， 1986， 200（1）： 45-54.
[12]	欧阳小平，王天照，方旭. 高速航空柱塞泵研究现状［J］. 液压与气动， 2018， 42（2）： 1-8.
	OUYANG Xiaoping， WANG Tianzhao， FANG Xu. Research Status of the High Speed Aircraft Piston Pump［J］. Chinese Hydraulics & Pneumatics， 2018， 42（2）： 1-8.
[13]	DARLING J. Piston-cylinder Dynamics in Oil Hydraulic Axial Piston Pumps［D］. Bath： University of Bath， 1985.
[14]	MANRING N D. The Discharge Flow Ripple of an Axial-piston Swash-plate Type Hydrostatic Pump［J］. Journal of Dynamic Systems， Measurement， and Control， 2000， 122（2）： 263-268.
[15]	KIM J K， KIM H E， JUNG J Y， et al. Relation between Pressure Variations and Noise in Axial Type Oil Piston Pumps［J］. KSME International Journal， 2004， 18（6）： 1019-1025.
[16]	MANDAL N P， SAHA R， SANYAL D. Effects of Flow Inertia Modelling and Valve-plate Geometry on Swash-plate Axial-piston Pump Performance［J］. Proceedings of the Institution of Mechanical Engineers， Part I： Journal of Systems and Control Engineering， 2012， 226（4）： 451-465.
[17]	PETTERSSON M. Design of Fluid Power Piston Pumps： with Special Reference to Noise Reduction［D］. Norrköping ：Linköpings Universitet， 1995.
[18]	MANRING N D. Valve-plate Design for an Axial Piston Pump Operating at Low Displacements［J］. Journal of Mechanical Design， 2003， 125（1）： 200-205.
[19]	JIN Dingcan， RUAN Jian， LI Sheng， et al. Modelling and Validation of a Roller-cam Rail Mechanism Used in a 2D Piston Pump［J］. Journal of Zhejiang University： Science A， 2019， 20（3）： 201-217.
[20]	XING Tong， XU Yezhou， RUAN Jian. Two-dimensional Piston Pump： Principle， Design， and Testing for Aviation Fuel Pumps［J］. Chinese Journal of Aeronautics， 2020， 33（4）： 1349-1360.
[21]	金丁灿，阮健. 二维燃油泵的设计与研究［J］. 航空学报， 2019， 40（5）： 422730.
	JIN Dingcan， RUAN Jian. Design and Research of Two-dimensional Fuel Pump［J］. Acta Aeronautica et Astronautica Sinica， 2019， 40（5）： 422730.
[22]	WANG Heyuan， DING Chuan， HUANG Yu， et al. Design and Research of 2D Piston Pumps with a Stacked Cone Roller Set［J］. Proceedings of the Institution of Mechanical Engineers， Part C： Journal of Mechanical Engineering Science， 2022， 236（5）： 2128-2146.
[23]	ZHANG C， ZANG Y， WANG H，et al.Theoretical and Experimental Investigation on the Efficiency of a Novel Roller Piston Pump［J］. Journal of Zhejiang University—Science A， 2023， 24（9）：762-781.
[24]	叶绍干. 轴向柱塞泵声振特性预测及面向降噪的结构优化［D］. 杭州：浙江大学， 2016.
	YE Shaogan. Prediction of Vibro-acoustic Characteristics and Structure Optimization for Noise Reduction of Axial Piston Pumps［D］. Hangzhou： Zhejiang University， 2016.
[25]	LAUNDER B E， SPALDING D B. The Numerical Computation of Turbulent Flows［M］∥Numerical Prediction of Flow， Heat Transfer， Turbulence and Combustion. Amsterdam： Elsevier， 1983： 96-116.
[26]	YAKHOT V， ORSZAG S A. Renormalization Group Analysis of Turbulence. I. Basic Theory［J］. Journal of Scientific Computing， 1986， 1（1）： 3-51.
[27]	EDGE K A， JOHNSTON D N. The ‘Secondary Source’ Method for the Measurement of Pump Pressure Ripple Characteristics Part 1： Description of Method［J］. Proceedings of the Institution of Mechanical Engineers， Part A： Journal of Power and Energy， 1990， 204（1）： 33-40.
[28]	EDGE K， XIAO S， BURROWS C R， et al. Flow Visualisation of Cavitation in a Reciprocating Plunger Pump Using High-speed Cinematography［C］∥Fourth Triennial International Symposium on Fluid Control， Fluid Measurement， Fluid Mechanics， Visualization. 1994： 1101-1106.