600MW锅炉炉内流动与燃烧过程的数值模拟

应用Euleriam/Lagrangian方法对四角切向燃烧炉内的流动、传热和燃烧过程者了数值模拟研究。为了获得较好的精确度，以实验数据为参照，进行了ＲＮＧ k－ε模型和 k－ε模型的比较，并采用新的方法对粒子紊流扩散进行了处理。最后，还对温度偏差进行了研究。

Numerical Simulation of Flow and Combustion Processes in a 600MW Tangentially Fired Furnace

In this paper, an Eulerian/Lagrangian approach has been employed to investigate numerically flow characteristics, heat transfer and combustion processes in a tangentially fired furnace. To avoid pseudo-diffusion that is significant in modeling tangentially-fired furnaces, some attempts have been made at improving the finite-difference scheme; comparisons have been made between standard k-ε and RNG k-ε models; some new developments on turbulerit diffusion of particles are taken into account for improving computational accuracy. Finally, temperature deviation is studied numerically so as to gain deeper insight into tangentially fired furnaces. Figs6, tables 2 and refs 10.