Turbulence-Flame Interaction In The Broken Reaction Regime

Abstract

The effects of flow turbulence on combustion-induced phenomena are investigated for premixed combustion in the broken reaction regime. Bluff-body flame stabilization is used to analyze propane-air flames in a blow-down afterburner facility. A turbulence generator is designed to modulate the required inflow conditions for the current study. High-speed two-dimensional particle imaging velocimetry (PIV) and simultaneous formaldehyde planar laser induced fluorescence (PLIF) are used to characterize the turbulent flow-flame field. Turbulent flames are subjected to a variable pressure gradient, which is modulated by the test section geometry. This pressure gradient enables full control and isolation of combustion-induced phenomena. The relative balance of the combustion phenomena is subsequently analyzed using a Lagrangian tracking approach. The relative magnitudes of dilatation, baroclinicity and vorticity stretching are determined and compared. Results within the broken reaction regime are compared to previous analyses considering the flamelet regimes.

Publication Date

1-1-2018

Publication Title

AIAA Aerospace Sciences Meeting, 2018

Issue

210059

Document Type

Article; Proceedings Paper

Personal Identifier

scopus

DOI Link

https://doi.org/10.2514/6.2018-0162

Socpus ID

85044364531 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/85044364531

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