ID#: 149
Abstract Title: Burning Intensity of Laminar Premixed Flame with Continuous Changing Stretch Rate along the Flame Surface
Session Title: Poster Session I
Session Date: 7/31/01
Session Start Time: 2:50 PM
Contributing Author: Yokomori, T.
Organization: Graduate School of Keio University
Country: Japan
Authors: Takeshi Yokomori, Masahiko Mizomoto
Short Abstract: A relation between the burning intensity and the continuous changing stretch rate along the flame surface was experimentally investigated. The flame temperature and the flame stretch rate along the flame surface were measured for the flame with continuous convex and concave curvatures (we call 3V-type) and for one with a single convex toward the fresh mixture (V-type), which were formed in the laminar flow of the lean propane/air mixture (φ=0.72, Le=1.82). As a result, the flame stretch rate for 3V-type was equal to one for V-type everywhere except the location near the concave, so that those flames were equal in the flame temperature which was estimated from the theory proposed by C. J. Sun et al. However, measured flame temperatures were not the same between 3V and V-type. We guess the reason why such difference was arisen is the existence of the heat transfer along the flame surface, and we suggest that the heat transfer along the flame surface should be considered in the theory proposed by C. J. Sun et al.