机械科学与技术2017，Vol.36Issue(6)：834-840,7.DOI:10.13433/j.cnki.1003-8728.2017.0603
变排量叶片式机油泵内流场分析和噪声试验研究
Internal Flow Field Analysis and Noise Experimental Research on Variable Displacement Vane Oil Pump
摘要
Abstract
Considering the effect of the gaps,the internal field model of variable displacement vane oil pump was established.Based on RNG k-ε turbulent fluid model,numerical simulation of turbulent flow on variable displacement vane oil pump under steady working condition was implemented by using a computational fluid dynamics code,the flow and pressure were obtained,and the cavitation phenomenon was predicted.The accuracy of the simulation model was verified by comparing the simulation and experimental results.Considering the effect of unloading groove,the pressure pulsation in time domain and frequency domain at the monitoring points in internal field were simulated,which showed that the pressure pulsation of the trapped oil area was the biggest and the dominant frequency was the fundamental frequency.The noise test of the oil pump indicated that the dominant frequency of noise was coincided with the fundamental frequency of pressure pulsation.The results show that the noise of variable displacement vane oil pump is mainly caused by the pressure pulsation,and pressure pulsation of the trapped oil area can be reduced effectively by unloading groove.关键词
变排量/机油泵/空化/压力脉动/基频/噪声Key words
variable displacement/oil pump/cavitation/pressure pulsation/fundamental frequency/noise分类
能源科技引用本文复制引用
贺尚红,周钦,李文科,刘光明..变排量叶片式机油泵内流场分析和噪声试验研究[J].机械科学与技术,2017,36(6):834-840,7.基金项目
国家自然科学基金项目(51275059)、湖南省自然科学基金项目(14JJ7025A、2015JJ4003)及湖南省研究生科研创新项目(CX2015B356)资助 （51275059）
