LARGE EDDY SIMULATION OF BLUFF-BODY STABILIZED FLAME BY USING FLAME SURFACE DENSITY APPROACH

Abstract. Despite significant advances in understanding and modelling of combustion-LES, LES of premixed combustion remains a challenging issue. This problem is more challenging when an incompressible formulation is used where the density coupling is weak, and an improper density coupling can lead to unrealistic flame speeds and thickness. For this purpose the flame surface density approach is used along with an appropriate numerical technique. By incorporating the proper flame wrinkling model, the LES of Bluff-body stabilized premixed flame are carried out and numerical results are compared with experimental data. A good agreement testifies the accuracy of the numerical method