蜂窝式轴心通风器油气分离性能计算

发布时间：2019-01-01 08:10

【摘要】：为对航空发动机蜂窝式轴心通风器油气分离效率进行研究,建立考虑油气双向耦合的流场计算方法及油滴/壁面相互作用模型,在验证通风阻力及油气分离效率可靠性的基础上,对不同转速、通风流量和环境温度下蜂窝式轴心通风器的油气分离效果进行计算和分析.结果表明:转速的增加会使油气分离效率得到提升,而通风流量和环境温度的增加则导致油气分离效率的降低.蜂窝孔结构的加入对通风阻力影响不大,却对通风器的滑油分离过程起主要作用,计算表明其对滑油分离贡献率在80%以上.
[Abstract]:In order to study the oil and gas separation efficiency of the honeycomb shaft ventilator of aero-engine, the flow field calculation method and the oil droplet / wall interaction model considering the bidirectional coupling of oil and gas are established. On the basis of verifying the reliability of ventilation resistance and oil and gas separation efficiency, the oil and gas separation effect of honeycomb axial ventilator under different rotational speed, ventilation flow rate and ambient temperature was calculated and analyzed. The results show that the oil and gas separation efficiency will be improved with the increase of rotational speed, while the increase of ventilation flow and ambient temperature will lead to the decrease of oil and gas separation efficiency. The addition of honeycomb structure has little effect on the ventilation resistance, but it plays a major role in the oil separation process of the ventilator. The calculation shows that the contribution rate of the honeycomb structure to the oil separation is more than 80%.
【作者单位】：西北工业大学动力与能源学院;
【分类号】：V233

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