Numerical Simulation of Flameless Premixed Combustion with an Annular Nozzle in a Recuperative Furnace

CIESC Journal ›› 2010, Vol. 18 ›› Issue (1): 10-17.

Numerical Simulation of Flameless Premixed Combustion with an Annular Nozzle in a Recuperative Furnace

米建春^1,2, 李鹏飞¹, 郑楚光²

1. State Key Laboratory of Turbulence and Complex Systems, Department of Energy&Resources Engineering, College of Engineering, Peking University, Beijing 100871, China;
2. State Key Laboratory of Coal Combustion, Huazhong University of Science and Technology, Wuhan 430074, China

收稿日期:2009-09-01 修回日期:2009-11-11 出版日期:2010-02-28 发布日期:2010-12-30
通讯作者: MI Jianchun, E-mail: jcmi@coe.pku.edu.cn
作者简介:
基金资助:
Supported by the National Natural Science Foundation of China(50936001)

Numerical Simulation of Flameless Premixed Combustion with an Annular Nozzle in a Recuperative Furnace

MI Jianchun^1,2, LI Pengfei¹, ZHENG Chuguang²

1. State Key Laboratory of Turbulence and Complex Systems, Department of Energy&Resources Engineering, College of Engineering, Peking University, Beijing 100871, China;
2. State Key Laboratory of Coal Combustion, Huazhong University of Science and Technology, Wuhan 430074, China

Received:2009-09-01 Revised:2009-11-11 Online:2010-02-28 Published:2010-12-30
Supported by:
Supported by the National Natural Science Foundation of China(50936001)

摘要/Abstract

摘要： This paper reports an investigation of Computational Fluid Dynamics(CFD) on the influence of injection momentum rate of premixed air and fuel on the flameless Moderate or Intense Low oxygen Dilution(MILD) combustion in a recuperative furnace.Details of the furnace flow velocity,temperature,O₂,CO₂ and NO_x concentrations are provided.Results obtained suggest that the flue gas recirculation plays a vital role in establishing the premixed MILD combustion.It is also revealed that there is a critical momentum rate of the fuel-air mixture below which MILD combustion does not occur.Moreover,the momentum rate appears to have less significant influence on conventional global combustion than on MILD combustion.

关键词: flameless oxidation, premixed combustion, numerical simulation

Abstract: This paper reports an investigation of Computational Fluid Dynamics(CFD) on the influence of injection momentum rate of premixed air and fuel on the flameless Moderate or Intense Low oxygen Dilution(MILD) combustion in a recuperative furnace.Details of the furnace flow velocity,temperature,O₂,CO₂ and NO_x concentrations are provided.Results obtained suggest that the flue gas recirculation plays a vital role in establishing the premixed MILD combustion.It is also revealed that there is a critical momentum rate of the fuel-air mixture below which MILD combustion does not occur.Moreover,the momentum rate appears to have less significant influence on conventional global combustion than on MILD combustion.

Key words: flameless oxidation, premixed combustion, numerical simulation

米建春, 李鹏飞, 郑楚光. Numerical Simulation of Flameless Premixed Combustion with an Annular Nozzle in a Recuperative Furnace[J]. CIESC Journal, 2010, 18(1): 10-17.

MI Jianchun, LI Pengfei, ZHENG Chuguang. Numerical Simulation of Flameless Premixed Combustion with an Annular Nozzle in a Recuperative Furnace[J]. , 2010, 18(1): 10-17.

参考文献

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Numerical Simulation of Flameless Premixed Combustion with an Annular Nozzle in a Recuperative Furnace

Numerical Simulation of Flameless Premixed Combustion with an Annular Nozzle in a Recuperative Furnace

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