Self-wrinkling induced by Darrieus-Landau instability in turbulent premixed Bunsen flames from low to moderately high Reynolds numbers

Abstract

In this experimental work we analyze various turbulent premixed flames under the effects (or lack thereof) of the Darrieus-Landau hydrodynamic instability. In particular, the effects of an increasing level of turbulence are considered by means of different observables. On the one hand we obtain results which can improve the understanding of fundamental mechanisms ruling the interaction between flame fronts, either unstable and stable, and turbulence. On the other hand, conclusions we draw may lead to new definitions or improvement of closure models for numerical simulation of turbulent premixed flames under the effects of hydrodynamic instability.