Performance Evaluation of a Model Swirl Burner under Premixed or Stratified Inlet Mixture Conditions

Abstract

This work presents a comparative study of the performance between fully premixed and stratified propane flames stabilized in a disk burner configuration operating with a swirl coflow over a range of stoichiometric to ultra-lean conditions. A selection of radial equivalence ratio gradients up to the fully premixed case are regulated by staged premixing of propane and air within a double cavity formed along three concentric disks. Flame stabilization is established at the recirculation region of the afterbody disk. Measurements of temperatures, flame chemiluminescence images of