Quantifying the impact of heat loss, stretch and preferential diffusion effects to the anchoring of bluff body stabilized premixed flames

The response of a premixed flame subjected to either stretch (and associated Lewis number effects) or heat loss has been well documented in the literature and enabled good understanding canonical configurations such as flat burner-stabilized, counter flow tubular flames. However, practical burners, flames are simultaneously stretch, transfer with holder preferential diffusion effects. For flames, usually collective effect underlying contributions is studied individual effects only treated qualitative manner. In this paper, our objective use theory separate quantify from speed bluff body stabilized It shown that adequately predicts displacement comparison results numerical simulations. Using quantification contributions, an overall stabilization mechanism for H 2 enriched CH 4 -air mixtures discussed. role competing highlighted especially near base region where heavily impacted by all Insights also given low flashback prone