摘要
采用ｋ－ε－ｋｐ两相湍流模型模拟了轴向叶片式旋流煤粉燃烧器出口区域的冷态两相流场，并将计算结果与ＰＤＰＡ的实验结果作了详细的比较。计算和实验结果都表明该燃烧器能产生较大的回流区，但回流区中大部分区域煤粉浓度较低。ｋ－ε－ｋｐ模型预报的两相速度场、湍流度和煤粉浓度场有的在定量上、也有的在定性上合理。
The kkp model is
applied to simulate swirling gasparticle flows at the exit of a swirl burner for
pulverizedcoal furnaces.The prediction of the model is compared with experimental data
in the present work.The Numerical and experimental results show that large recirculation
zones of gas and particle phases formed in the nearaxis region of the burner exit,the
particle concentration but is low in most parts of the nearaxis recirculation.Twophase
timeaverage and fluctuation velocities,and particle concentration predicted by the kkp
model agree quatitatively or quanlitatively well with the experimental data,so the kkp
model can meet the requirements of engineering.
出处
《燃烧科学与技术》
EI
CAS
CSCD
1999年第2期211-217,共7页
Journal of Combustion Science and Technology
