Abstract: In this work, an Eulerian/Lagrangian approach has been employed to investigate numerically
the flow characteristics, heat transfer and combustion in a tangentially fired furnace. The
RNG (Re-normalization group) k-e model and a new method for cell face velocity
interpolation based on a non-staggered grid system are employed. To avoid pseudo-diffusion
that is significant in modeling tangentially fired furnaces, attempts are made at improving
the differential volume scheme. Some new developments on turbulent diffusion of particles
are also taken into account. Thus, computational accuracy is improved substantially.

Key words: tangentially fired boilers, simulation, Eulerian/Lagrangian approach

摘要： In this work, an Eulerian/Lagrangian approach has been employed to investigate numerically
the flow characteristics, heat transfer and combustion in a tangentially fired furnace. The
RNG (Re-normalization group) k-e model and a new method for cell face velocity
interpolation based on a non-staggered grid system are employed. To avoid pseudo-diffusion
that is significant in modeling tangentially fired furnaces, attempts are made at improving
the differential volume scheme. Some new developments on turbulent diffusion of particles
are also taken into account. Thus, computational accuracy is improved substantially.

关键词: tangentially fired boilers;simulation;Eulerian/Lagrangian approach