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Turbulence and Shear Flow Phenomena -1 First International Symposium

ISBN Print: 1-56700-135-1

TURBULENCE EFFECT ON THE FLAME-WALL INTERACTION

Abstract

The flame-wall interaction is experimentally studied in the particular case where fresh gases separate the flame from the wall. The purpose of this work is to analyze, by means of a phenomenological approach, the different physical mechanisms involved when a turbulent premixed V-shaped flame interacts with a boundary layer. The aerodynamic description of the interaction has been emphasized, consequently most of the results arises from detailed description of the velocity field and from image processing of laser tomographies. This study put in advance two main phenomena. First, a global deflection of the flame due to the boundary layer development is shown. Second, there is a significant influence of the boundary layer turbulence characteristics on the shape and on the behavior of the flame front.
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