流体机械2025，Vol.53Issue(10)：73-80,8.DOI:10.3969/j.issn.1005-0329.2025.10.009
航空发动机润滑密封系统油气分离器分离性能研究
Separation performance study of oil-gas separator in aero-engine lubrication and sealing system
摘要
Abstract
To address the effective degassing problem of oil-air mixtures in aero-engine lubrication systems,a dynamic pressure oil-gas separator with a square inlet and simple compact structure is proposed.A combination of simulation and experimental methods was used to analyze its separation performance,and the control variable method was applied to investigate the influence laws of flow velocity,oil volume fraction,and oil droplet size on separation efficiency.The results show that the separation efficiency of the oil-gas separator is highest under high flow velocity and low oil volume fraction conditions;flow velocity has a significant impact on separation performance,achieving a maximum air separation efficiency ηd of 88.8%at 35 m/s;oil volume fraction also notably affects separation performance,reaching a maximum oil separation efficiency ηc of 93.5%at an oil volume fraction of 5%and droplet size of 5 μm.For large droplets with sizes of 15 μm and above,the separation efficiency ηk of this dynamic pressure oil-gas separator approaches 100%.This study can provide references for the development of oil-gas separators with high separation efficiency and low flow resistance.关键词
润滑密封系统/油气分离器/分离效率/数值模拟Key words
lubrication and sealing system/oil-gas separator/separation efficiency/numerical simulation分类
化学化工引用本文复制引用
李柯宁,贾兴运,熊德明,戴大利,程会川,张志红..航空发动机润滑密封系统油气分离器分离性能研究[J].流体机械,2025,53(10):73-80,8.基金项目
国家自然科学基金项目(52305176) （52305176）
中央高校基本科研经费项目(JD2523) （JD2523）
