Forcing of a flame by a periodic flow in a Hele-Shaw burner

Abstract

Understanding how time-dependent flows affect the propagation of a flame is of prime importance for engineering applications. We experimentally study the case of a quasi-two-dimensional flame propagating in a flow that varies periodically in time. The flow acts as a parametric forcing and induces parametric restabilization and parametric destabilization of the flame front. The comparison of our experimental measurements of these destabilization and restabilization thresholds with a low frequency theory indicates how the flame response varies with the time scale associated with the dynamics of the flow.

Topics & Concepts