IONIZATION MEASUREMENTS IN FREE-JET DIFFUSION FLAMES

被引：5

作者：

AHLHEIM, M

GUNTHER, R

机构：

[1] Department of Fuel Technology, Engler-Bunte Institut, University of Karlsruhe (TH), 7500 Karlsruhe, D.

来源：

COMBUSTION AND FLAME | 1979年 / 36卷 / 02期

关键词：

D O I：

10.1016/0010-2180(79)90054-3

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

The existence of ions in flames has been known for a long time, and there are many current investigations on ions, mostly in premixed flames that are especially related to kinetics of combustion. There are only a few measurements of ions in turbulent diffusion flames. Considering that ionization is strongly related to the combustion reaction, the measurements of ionization in diffusion flames reported here should give a good idea of combustion progress in these flames. The studies were made in a free-jet flame emerging from an 8-mm nozzle and in the flame of a parallel-stream burner with an 8-mm gas tube and an annular air-stream. Both flames were produced with natural gas and were stabilized by an annular oxygen stream surrounding the gas exit. The measurements include the time mean and the root-mean-square (rms) values of ionization as well as the probability density function (PDF). Frequency analyses and frequency counts were also made to determine characteristic frequencies and scales. © 1979.

引用

页码：117 / 124

页数：8

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