为实现航空发动机拟实工况下动压式油气分离器分离效率测试，攻克油气分离器两相流动计算仿真准确性无法验证的难题，本文以某型动压式油气分离器为研究对象，设计了真实发动机运转工况下的油气分离器分离效率测试方案，搭建了动压式油气分离器分离效率与流阻效率测试装置，并基于数值仿真计算方法与试验测试，开展不同分离器关键结构对分离效率影响规律研究，探究了排料斗几何形状、筒体长度、挡板深度等因素对动压式油气分离器分离效率的影响。研究结果表明，双层方进口分离器相较于传统分离器，其滑油分离效率ηc和空气分离效率ηd分别提升了5%和17%，油气质量分离比ηe提高了50%。

In order to realize the separation efficiency test of the dynamic pressure oil-gas separator under the quasi-real working condition of the aeroengine and overcome the problem that the accuracy of the two-phase flow calculation simulation of the oil-gas separator cannot be verified, this paper takes a certain type of dynamic pressure oil-gas separator as the research object, designs the separation efficiency test scheme of the oil-gas separator under the real engine operating condition, and builds the separation efficiency and flow resistance efficiency test device of the dynamic pressure oil-gas separator. Based on the numerical simulation calculation method and the experimental test, the influence of the key structure of different separators on the separation efficiency is studied. The effects of the geometric shape of the hopper, the length of the cylinder and the depth of the baffle on the separation efficiency of the dynamic pressure oil-gas separator were investigated. The results show that compared with the traditional separator, the oil separation efficiency ηc and air separation efficiency ηd of the double-layer square inlet separator are increased by 5% and 17% respectively, and the oil-gas mass separation ratio ηe is increased by 50%.

国家自然科学(52305176),中央高校基本科研经费(JD2423)