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A lab-scale burner, referred to as the Stagnation Point Reverse Flow (SPRF) combustor has been built at Georgia Tech, which incorporates a novel design to achieve exhaust-gas recirculation, premixing, and dilution. This combustor has shown the potential to meet the conicting requirements of low pollution and high eciency . Large Eddy Simulations (LES) are used to characterize the o w eld and combustion phenomenon for the premixed mode of operation. The computed mean and root mean square (RMS) quantities agrees well with the measurements. All the observed features such as the enhanced entrainment and mixing of the returning hot products into the incoming reacting jet are resolved in the computations. The primary stabilization zone in the SPRF combustor, which is considered to be the region of low mean and high uctuating velocities is also captured in the computations. Karlovitz numbers are evaluated and the combustion phenomenon in SPRF combustor is found to operate in thin ame regions. The potential of SPRF combustor to produce low NO is also demonstrated by LES using global NO mechanisms.

LES of Premixed Combustion in the Stagnation Point Reverse Flow Combustor