MODELING OF BITUMINOUS COAL AND LEAN COAL COMBUSTION IN A COMBUSTOR OF CO-FLOWING JETS WITH LARGE VELOCITY DIFFERENCE

The two-dimensional turbulent re irculating two-phase flow, mixing ancl combustion in a combustor of coflowing jets with large velocity difference for two types of pulverized coal-bituminous coal and lean coal are predicted by the trajectory model of particle phase with some improvements in the solution technique. The prediction results show the particle motion pattern and the mixing of the particles with the reverse gas flow. The stabilization of pulverized coal fla.ne is realized mainly by volatile combus...