Modeling of Combustion Processes in 600 MW Utility Biler Using Comprehensive Modles and its Experimental Validation

摘要

In this work, an Eulerian/Lagrangian approach has been employed to numerically investigate flow characteristics, heat transfer, and combustion processes in tangentially fired furnaces.l Comprehensive models have been described in detail. An RNG k-∈ modle and a new cell face velocity interpolation method based on a nonstaggered grid system are emplyed to gain accuracy. Toavoid pseudo-diffusion that is signficant in modeling teangentially fired furnaces, soem attempts have been made at improving the differential voluem scheme. Some new developments on turbulent diffuson of particles are taken into account for improving computatioanl accuracy. Numerical resutls achieve reasonable agreement with experimental data.