Experimental study on the configuration and propagation characteristics of premixed turbulent flame

Abstract

An attempt is made to examine the configuration and propagation characteristics of premixed turbulent flame in a weak turbulence region. A laser tomography technique is used to obtain the flame shape, and quantitative analysis is performed. It is found that the turbulent flame front can be classified into the active and the inactive part for the flame propagation, where the former is the convex part of flame toward the unburned mixture and the latter is toward the burned gas. In this paper, the local burning velocity and the local flame front curvature are determined directly by sequential flame tomograms.