Laser-induced fluorescence for the non-intrusive diagnostics of a fuel droplet burning under microgravity in a drop shaft

被引：8

作者：

Matsumoto, K ^{[1
]}

Fujii, T ^{[1
]}

Suzuki, M ^{[1
]}

Segawa, D ^{[1
]}

Kadota, T ^{[1
]}

机构：

[1] Osaka Prefecture Univ, Dept Mech Engn, Sakai, Osaka 5998531, Japan

来源：

MEASUREMENT SCIENCE AND TECHNOLOGY | 1999年 / 10卷 / 10期

关键词：

laser-induced fluorescence; microgravity; drop shaft; fuel droplet; droplet temperature; soot;

D O I：

10.1088/0957-0233/10/10/304

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The laser-induced-fluorescence method has been employed for remote, non-intrusive and instantaneous measurements of a fuel droplet burning under microgravity. A fuel droplet was doped with naphthalene and TMPD. The fluorescence emission spectra from a droplet subjected to the incident nitrogen laser beam were measured with an image-intensifying optical multichannel analyser. The microgravity was generated in a capsule of a 100 m drop shaft. The results showed that the newly developed diagnostic system could be applied successfully for the simultaneous measurements of droplet temperature and diameters of the droplet, flame and soot shell under microgravity. The droplet temperature was determined from the measured ratio of fluorescence emission intensities at two different wavelengths. The soot shell was located in the vicinity of the droplet surface deep inside the flame during the early stage of the burning and moved away from the droplet with the elapse of time.

引用

页码：853 / 858

页数：6

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