不同运行参数下高速航空柱塞泵空化特性研究  

Study on Cavitation Characteristics of High-Speed Aviation Piston Pump under Different Operating Parameters

作　　者：陈远玲[1] 陈家文 潘越洋 闫明洋 CHEN Yuan-ling;CHEN Jia-wen;PAN Yue-yang;YAN Ming-yang(School of Mechanical Engineering,Guangxi University,Nanning Guangxi 530004,China)

机构地区：[1]广西大学机械工程学院,广西南宁530004

出　　处：《计算机仿真》2025年第2期22-27,55,共7页Computer Simulation

基　　金：国家自然科学基金(52265005)。

摘　　要：以额定转速为8000r/min的变量式航空柱塞泵为研究对象,搭建含有空化模块的航空柱塞泵CFD数值仿真模型,对卸荷槽和柱塞区域内的空化机理进行分析,并探究柱塞泵的进、出口压力和斜盘倾角等运行参数对其空化特性的影响。结果表明:增大进口压力可以有效改善柱塞泵卸荷槽和柱塞区域的空化情况,但进口压力超过0.6MPa后空化抑制效果不显著;卸荷槽和柱塞区域的空化随着斜盘倾角和出口压力的增大而加剧。最后通过试验测试了柱塞泵在8000r/min和不同进、出口压力下的容积损失率,验证了仿真模型的正确性。研究结果可为高速航空柱塞泵的设计和使用提供理论指导。Taking the variable aviation piston pump with a rated speed of 8000r/min as the research object,a numerical simulation model of an aviation piston pump with a cavitation module was constructed,the cavitation mechanism in the unloading trough and plunger area was analyzed,and the influence of operating parameters such as inlet and outlet pressure and swash plate inclination angle of the piston pump on its cavitation characteristics was explored.The results show that increasing the inlet pressure can effectively improve the cavitation of the unloading groove and plunger area of the plunger pump,but the cavitation inhibition effect is not significant after the inlet pressure exceeds O.6M PA.The cavitation of the unloading trough and plunger area intensifies with increasing swash plate inclination and outlet pressure.Finally,the volume loss rate of the piston pump at 8000r/min and different inlet and outlet pressures is tested by experiments,and the correctness of the simulation model is verified.The research results can provide theoretical guidance for the design and use of high-speed aviation piston pumps.

关 键 词：高速航空柱塞泵 卸荷槽 柱塞区域 空化 

分 类 号：V37[航空宇航科学与技术—航空宇航推进理论与工程]