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

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关键词：滚子柱塞泵；流量脉动；出口压力；计算流体动力学；数值模拟中图分类号：TH137.52DOI：10.3969/j.issn.1004-132X.2026.02.006 开放科学（资源服务）标识码（OSID）：

Numerical Simulation and Experimental Verification of Flow Pulsation and Outlet Pressure of Roller Piston Pump

ZHANG Chenchen1 RUAN Jian²LI Sheng² 1.College of Mechanical and Automotive Engineering，Ningbo University of Technology，Ningbo， Zhejiang， 2.College of Mechanical Engineering，Zhejiang University of Technology，Hangzhou，

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 diference. Theoretical analysis show that under the conditions of 3000r/min and 5MPa ， 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

0 引言

航空液压泵是飞机液压系统的核心元件，其作用是将机械能转化为液压能，为飞机执行器提供动力，以实现飞机姿态的调整、起落架的收放和制动。（剩余17825字）