A detailed investigation of bluff body stabilized flames (postprint)

TLDR: In this paper, it was concluded that the vortex dynamics and not geometry is the dominant mechanism for bluff body flame extinction, and this conclusion was supported by the lean blowout data, by the high speed images and reference data from NACA.

Abstract: : Reduced Order Models (ROMs) and Computational Fluid Dynamics (CFD) codes are tools used to predict the extinction of flames behind bluff bodies Accurate prediction of these models and codes is predicated on their validation with experimental data This paper describes detailed experiments to obtain validation data for bluff body stabilized flames over a wide range of conditions Included are non-reacting data from CFD and LDV, lean blowout and high speed images for three different flame holders In our previous paper (Kiel 2006) it was asserted that the large vortices were a major driver of extinction Those assertions are further supported here It is concluded that the vortex dynamics and not geometry is the dominant mechanism for bluff body flame extinction This conclusion is supported by the lean blowout data, by the high speed images and reference data from NACA