Numerical Simulations of Pulverized Coal Combustion000 tetrahedral volumes with cone-shaped clustering on burner downstream for both LES and RANS simulation. The details of the governing equations, mathematical models and numerical procedures for LES of pulverized coal combustion are described in our previous papers24-26). 4.2 Comparison between LES and.cone shaped concentrator pulverized coal,Experimental characterization of an industrial pulverized coal-firedMeasurements have been performed in a 300 MWe, front-wall-fired, pulverized-coal, utility boiler. This boiler was retrofitted with boosted over fire air injectors that allowed the operation of the furnace under deeper staging conditions. New data are reported for local mean gas species concentration of O2, CO, CO2, NOx, gas.