| 付淑青，马洪安，吴宗霖，杨聪，张宝诚.低温环境下RP-3 航空煤油雾化特性试验研究[J].航空发动机,2021,47(6):26-31 |
| 低温环境下RP-3 航空煤油雾化特性试验研究 |
| Test Study on Spray Characteristics of RP-3 Aviation Kerosene at Low Temperature |
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| DOI： |
| 中文关键词: 雾化特性 RP-3航空煤油 雾化粒度 油滴平均速度 航空发动机 |
| 英文关键词:spray characteristics RP-3 aviation kerosene sauter mean diameter average velocity of fuel droplets aeroengine |
| 基金项目:国家自然科学青年基金（51506132、51606129）资助 |
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| 中文摘要: |
| 为了获取低温对RP-3航空煤油雾化特性的影响，在综合试验台上完成了供油压力为300～700 kPa、燃油温度为25、-15、
-35 ℃的某喷嘴雾化特性试验。使用高速摄像机拍摄雾化图像，利用Matlab/GUI图像处理功能编制的程序提取雾化锥角边缘，并
获得雾化锥角，使用相位多普勒粒子分析仪测得距喷口7 mm和17 mm处截面的雾化粒度和油滴平均速度。结果表明：在压力一
定、温度降低时，雾化锥角变小，油滴雾化粒度增大，油滴平均速度升高，在同测量截面上的油滴平均速度变化量减小；随着压力升
高，-35 ℃和25 ℃的雾化锥角相差不超过1°，-35 ℃的油滴雾化粒度增幅减小到8.36%。 |
| 英文摘要: |
| In order to obtain the effect of low temperature on the spray characteristics of RP-3 aviation kerosene，the spray characteristics tests of a nozzle were completed at operating pressures of 300~700 kPa，temperature of 25、-15、-35 ℃ on the comprehensive testbed.The spray images were taken by high-speed camera，and the spray cone angle edge was extracted by program complied by Matlab /GUI image processing function，and the spray cone angle was obtained. The sauter mean diameter and the average velocity of fuel droplets were measured by Phase Doppler Particle Analyzer at the section of 7 mm and 17 mm away from the nozzle. The results show that when the pressure is constant and the temperature is reduced，the spray cone angle of fuel decreases，the sauter mean diameter and the average velocity of fuel droplets increase，and the variation of average velocity of fuel droplets decreases on the same measurement section. With the increase of pressure，the difference of spray cone angle of fuel between-35 ℃ and 25 ℃ is no more than 1°，and the increase of sauter mean diameter of fuel droplet decreases to 8.36% at-35 ℃. |
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