摘要
离心通风器是航空发动机润滑系统中回收滑油的主要部件,工作时转速和通风流量对其分离滑油效率有一定的影响。以离心通风器内空气与滑油颗粒组成的两相流为研究对象,计算不同工况下滑油油珠的穿透率。采用DPM模型模拟颗粒相喷射源,应用雷诺应力模型计算连续相湍流流动。计算结果表明,提高转速可以减小穿透率,保障滑油的回收。加大通风流量时,离心通风器的穿透率增加。
Centrifugal breather is the major part of lubricating oil recycling system in aviation engine, whose efficiency of oil-separation can be affected by air flow and speed. The transmittance of oil droplets under dif- ferent conditions is calculated with the subjects of the two-phase flow in the Centrifugal breather which is consisted of air and oil particles, The DPM model is used to simulate the jet source of particles, and the Reynolds stress model is applied to calculate continuous phase turbulent flow. The results show that icreasing the speed can reduce transmittanceand ensure oil recovery, and thatthe more the ventilation flow, the more the penetration of centrifugal breather.
出处
《沈阳航空航天大学学报》
2013年第6期8-10,20,共4页
Journal of Shenyang Aerospace University
关键词
润滑系统
离心通风器
转速
通风流量
穿透率
lubrication system
centrifugal breather
rotational speed
ventilation flow
penetration
