Axial mean velocities for air and particles with the actual position reduce faster and particles penetrate some central recirculation zone (CRZ) beginning from x/d=1.5 cross section.
实际扩口位置的燃烧器在中心线处的气固两相轴向速度衰减速度快;从x/d=1.5的截面开始,出现了颗粒穿越了部分回流区。
参考来源 - 一次风扩口对中心给粉燃烧器气固流动影响的试验研究Through analyzing the flame stability of back-flow region and NO_X formation, the burnable saw-teethes are added on the V-shape bluff burner.
通过对回流区火焰稳定性和NO_X的生成进行分析,在钝体燃烧器上添加燃烧齿。
参考来源 - 新型低NO·2,447,543篇论文数据，部分数据来源于NoteExpress
研究了影响中心回流区的主要因素。
The main factors which affect the center reflux area are investigated.
在燃烧器出口钝体下游轴向速度为负，形成回流区。
At the exit of the bluff-body, recirculation area is formed because of the negative downstream axial velocity.
燃烧火焰基本上位于回流区所在的位置，火焰在回流区被稳定。
The flame is mainly located in the recirculation region where the flame is stabilized.
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