Large-eddy simulation of bluff-body stabilized premixed flames with low-dissipative, structure-preserving convection schemes

Large eddy simulation (LES) has the potential to predict turbulent combustion phenomena in modern practical combustors. As errors from sub-grid models may be comparable numerical LES approach, mitigating impact of is as important constructing accurate models. Therefore, a low-dissipative, structure-preserving ROUND (Reconstruction Operators on Unified Normalized-variable Diagram) scheme tested for reacting flows this study. The high efficiency demonstrated by evaluating its accuracy, central processing unit cost, and property simulating convection–diffusion process passive scalar. Simulations two bluff body stabilized flames are studied using scheme. For low turbulence intensity, current improves resolution instantaneous averaged flow fields. prediction statistics also improved schemes compared conventional schemes. Moreover, preserve axisymmetry better than cases investigated here. intensity case, avoids nonphysical oscillations. flame obtained compare well with measurements. work demonstrates advantages flows.