燃焼火炎の電気的特性
1972 年 41 巻 10 号 p. 1077-1084
詳細
1972 年 41 巻 10 号 p. 1077-1084
Electrical diagnostics are known as useful means for investigating distributions of density and energy of species existing in high temperature gases.
In this paper the results of measurment of various electrical characteristics of combustion flames are given. The flames are formed between a pair of opposing burners which act at the same time as two electrodes.
As fuels, city gas premixed with air or oxygen and propane premixed with oxygen are used.
The electrical impedance between the burners is measured at frequencies up to 2 MHz and the equivalent C-R network is deduced.
Combining these results with the potential distribution, the distribution of resistivity and the typical data for electron density in the flame are obtained.
For the purpose of obtaining information about the velocity of carrier particles the transient current is observed by imposing rectangular wave voltages between the electrodes.
Lastly, the polar effect and the rectification characteristics are measured for unsymmetrical flame composition imposing D. C. and A. C. voltages of various frequencies between the two burners.
