摘要
动压式油气分离器因为其结构简单、可以内置于航空发动机内部等优点,广泛应用于航空航天领域中。因为两相流动过程中气泡或液滴的碰撞、破碎、聚合等行为非常复杂,使用Fluent软件探究动压式油气分离器流场特性以及分离机理,采用容积法测量分离器分离效率,通过液体含气率和气体含气率的测定,表征了分离器性能的变化情况。借助物理模型的建立,考虑航空滑油粘度及马赫数影响,计算了动压式油气分离器内部流场,获得分离器内部流场各个截面的切向速度、轴向速度以及内部流场的分布规律,为后续其结构改进优化提供了支撑。
The dynamic pressure oil-gas separator is widely used in the aerospace field because of its simple structure.Since the collision,crushing and polymerization behaviors of bubbles or droplets in the two-phase flow process are very complex,Fluent software is used to explore the flow field characteristics and separation mechanism of the dynamic pressure oil-gas separator,and the separation efficiency of the separator is measured by volume method.The changes in the performance of the separator are characterized by the measurement of liquid and gas content.With the help of the physical model,the internal flow field of the dynamic pressure oil-gas separator is calculated by considering the influence of the viscosity and Mach number of aviation lubrication oil.The tangential velocity and axial velocity of the internal flow field of each section of the separator and the distribution law of the internal flow field are obtained,which has provided support for the subsequent structural improvement and optimization.
作者
任祺
孔祥伟
王丹
REN Qi;KONG Xiangwei;WANG Dan
出处
《现代机械》
2023年第3期26-30,共5页
Modern Machinery
关键词
动压式油气分离器
数值模拟
速度场
流动规律
dynamic pressure oil-gas separator
numerical simulation
velocity field
flow pattern
