Influence of cross-sectional area on combustion and NO<sub>x</sub> formation in can-annular combustion chamber

GE Chen; FU Zhongguang; SHI Li; SONG Jiasheng

doi:10.19666/j.rlfd.201707063

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Influence of cross-sectional area on combustion and NO_x formation in can-annular combustion chamber

更新时间：2025-09-28

- Influence of cross-sectional area on combustion and NO_x formation in can-annular combustion chamber
- Thermal Power Generation Vol. 47, Issue 4, Pages: 79-85(2018)
- 作者机构：
  
  1. 华北电力大学电站设备状态监测与控制教育部重点实验室
  2. 湘潭大学机械工程学院
- 作者简介：
- 基金信息：
- DOI：10.19666/j.rlfd.201707063
  CLC： TK16
- Published Online：09 April 2018，
  
  Published：2018
- 稿件说明：
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GE Chen, FU Zhongguang, SHI Li, et al. Influence of cross-sectional area on combustion and NO_x formation in can-annular combustion chamber[J]. Thermal power generation, 2018, 47(4): 79-85.
DOI：

GE Chen, FU Zhongguang, SHI Li, et al. Influence of cross-sectional area on combustion and NO_x formation in can-annular combustion chamber[J]. Thermal power generation, 2018, 47(4): 79-85. DOI： 10.19666/j.rlfd.201707063.

摘要

采用数值模拟方法研究了环管型燃烧室横截面积变化对燃烧室燃烧、流动及燃烧室NO_x生成及排放的影响规律。分析表明:在环管型燃烧室主喷嘴出口形成主回流区

凸台区域形成外部回流区

外部回流区范围较小;随着横截面积增大

主回流区范围增大

温度峰值和高温区范围均有所减小;增大横截面积使得比面积热强度随之减小

燃烧室内温度水平逐渐下降

热力型NO_x生成速率降低

燃烧室出口NO_x排放量下降。

Abstract

Effects of the change of the cross-sectional area of the can-annular combustion chamber on the combustion

flow

NO_x formation and NO_x emission in the combustion chamber are studied by numerical simulation.The results show that

the main recirculation zone is formed at the outlet of the main nozzle of the can-annular combustion chamber

the outer recirculation zone is formed in the boss area

and the range of outer recirculation zone is small.As the cross-sectional area increases

the range of the main recirculation zone increases and the temperature peak and high-temperature zones decrease.Increasing the cross-sectional area reduces the specific area heat intensity

the temperature level of the combustion chamber

the thermal NO_x formation rate and the NO_xemissions from the combustion chamber.

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Influence of cross-sectional area on combustion and NOx formation in can-annular combustion chamber

DOI：10.19666/j.rlfd.201707063

摘要

Abstract

关键词

Keywords

references

Influence of cross-sectional area on combustion and NO_x formation in can-annular combustion chamber