Formation, Growth and Oxidation of Soot Particles under the Influence of an Alternating Electric Field : Part II Experiments on the Sonic Sampling Technique and Premixed Flat Flames

Abstract

Aiming at generalization of the experimental results concerning the effects of an alternating electric field on the processes of formation, growth and oxidation of soot particles reported in the previous paper, comparison between the isokinetic and sonic sampling techniques was made. The effects of an alternating electric field on the processes of soot formation were also compared between a coaxial-flow jet diffusion flame and a premixed flat flame. As a result, the superiority of the sonic sampling technique to the other technique was proved. In addition, the adverse effect of an alternating electric field on the formation of soot nuclei and its favorable effects on the coalescence, aggregation and oxidation of soot particles were reaffirmed.