Turbulence-Flame Interactionin The Wrinkledand Corrugated Flamelet Regimes

Abstract

The interaction between flames and turbulence is investigated for premixed combustion in the low-turbulence regimes. Bluff-body flame stabilization is implemented for propane-air flames in a blow-down wind tunnel. A customized turbulator is developed to modulate the non-reacting inflow turbulence to the required level. Flow turbulence is confirmed using hotwire anemometry and low-speed particle imaging velocimetry (PIV). High-speed PIV is used to characterize the downstream flow-flame field. Simultaneous chemiluminescence is further utilized to identify and track flame boundaries and structures. The focus of the analysis is downstream flow-flame field structure, with specific interest in effects resultant from baroclinicity and combustion-induced dilatation. The impact of downstream pressure gradient on these properties is additionally investigated by changing the orientation of the variable-geometry test section.

Publication Date

1-1-2017

Publication Title

AIAA SciTech Forum - 55th AIAA Aerospace Sciences Meeting

Document Type

Article; Proceedings Paper

Personal Identifier

scopus

DOI Link

https://doi.org/10.2514/6.2017-1784

Socpus ID

85017236564 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/85017236564

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