流通面积比对旋流杯油雾速度场的影响

刘涛; 李文高; 卢克乾

doi:10.13224/j.cnki.jasp.2017.10.005

流通面积比对旋流杯油雾速度场的影响

doi: 10.13224/j.cnki.jasp.2017.10.005

中国航空发动机集团有限公司湖南动力机械研究所，湖南株洲 412002

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出版历程
- 收稿日期: 2016-02-29
- 刊出日期: 2017-10-28

Effect of flowing area ratio on the spray velocity field of a swirl cup

摘要

摘要: 设计了3种不同一二级流通面积比的旋流杯试验件，在气压自模区工况下，运用粒子图像测速仪（PIV）对其出口油雾速度场进行测量，研究了不同流通面积比对旋流杯出口油雾速度场的影响，分析了油雾速度场的结构及其速度分布的变化规律。结果表明：随着一二级流通面积比的增加，旋流杯出口油雾速度场呈现出回流区面积和回流区长度逐渐变小、回流速度逐渐变大、出口射流张角逐渐减小的趋势。此外，从径向速度沿径向分布可以看出，随着流通面积比的增加油雾速度场的抗偏斜能力具有增强的趋势。
- 旋流杯 /
- 流通面积比 /
- 粒子图像测速仪（PIV） /
- 油雾速度场 /
- 中心回流区
Abstract: Swirl cups with three different flowing area ratios were designed. The spray velocity fields of the swirl cups were firstly studied by particle imagine velocity (PIV) under selfstimulated condition of air pressure. The effects of the flowing area ratio on the spray velocity field and the distributions of velocity were studied and analyzed, respectively. The results shows that the area and length of central recirculation zone gradually become smaller and shorter, and the recirculated velocity of central recirculation zone and the angle of spray are tended to be higher and smaller with the increase of the flowing area ratios. In addition, it can be seen that the capacity of antideviation increases with the increase of flowing ratios according to the radial distribution of spray velocity.
- swirl cup /
- flowing area ratio /
- particle image velocity(PIV) /
- spray velocity field /
- central recirculation zone

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参考文献(23)

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