Laser-diagnostic multi-species imaging in strongly swirling natural gas flames

被引：15

作者：

Böckle, S ^{[1
]}

Kazenwadel, J ^{[1
]}

Kunzelmann, T ^{[1
]}

Schulz, C ^{[1
]}

机构：

[1] Heidelberg Univ, Inst Phys Chem, D-69120 Heidelberg, Germany

来源：

APPLIED PHYSICS B-LASERS AND OPTICS | 2000年 / 71卷 / 05期

关键词：

D O I：

10.1007/s003400000392

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Within the TECFLAM group a standard swirl burner is investigated, both experimentally using optical and probe measurements and by simulations using different modeling attempts. The present study is focused on the laser-based investigation of the NO distribution within the reacting flow field of a strongly swirling, confined 150-kW natural gas flame. Simultaneous quantitative measurements of NO- and OH-concentration fields by laser-induced fluorescence imaging (LIF) and temperature distribution (Rayleigh scattering) are performed. Mixing properties of the unburned gases are investigated for the isothermal and the combusting flow using tetrahydrothiophene (THT) as a new fluorescing tracer. These measurements show which areas are sufficiently mixed allowing for the application of planar Rayleigh thermometry. Areas where THT-LIF interferes with OH-LIF detection are localized and omitted from data evaluation. The data is analyzed yielding global scalar fields for comparison with model simulations and correlations between the different measured scalars are investigated showing an almost linear correlation of NO concentration and temperature within the swirl flame whereas no apparent correlation between NO and OH concentration was found.

引用

页码：741 / 746

页数：6

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