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Application of automatic generation of chemical reactor networks in micro-mixing combustor
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Jiawei SHUAI1, 2, Fulin LEI1, 2, Zhedian ZHANG1, 2
Thermal Power Generation | 2025, 54(9) : 125 - 134
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Thermal Power Generation | 2025, 54(9): 125-134
• Thermal energy science research •
Application of automatic generation of chemical reactor networks in micro-mixing combustor
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Jiawei SHUAI1, 2, Fulin LEI1, 2, Zhedian ZHANG1, 2
Affiliations
  • 1.Key Laboratory of Advanced Energy and Power, Institute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing 100190, China
  • 2.School of Engineering Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
Published: 2025-09-25 doi: 10.19666/j.rlfd.202411240
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Computational fluid dynamics-chemical reactor network (CFD-CRN) simulation is a suitable method for predicting NOx emissions from gas turbines. A universal CRN automatic partitioning/solving program was developed and then applied and verified on a natural gas micro-mixing combustor. Through analysis of flow and combustion characteristics in the micro-mixing combustor based on CFD simulation, CRN partitioning criteria are established: firstly, the air and fuel zones are extracted, then major zones along the axial direction are divided, and further the zones are subdivided radially/circumferentially according to fuel-staging locations. The results indicate that, the CRN automatic partitioning/solving program enhances generality by using an XML standardized information interface and is suitable for complex combustor structures. The relative error between the predicted and experimental NOx emissions under different operating conditions of the micro-mixing combustor is less than 11%, and the influence of CFD grid number on the NOx prediction by CRN is relatively small. The effect of fuel distribution ratio on NOx emissions from micro-mixing combustor is analyzed, and a suitable adjustment range is given. The proposed CRN automatic partitioning/solving algorithm has potential applications in predicting NOx emissions from gas turbines.

micro-mixing combustor  /  chemical reactor network  /  CRN partitioning algorithm  /  fuel-staging  /  NOx emission
Jiawei SHUAI, Fulin LEI, Zhedian ZHANG. Application of automatic generation of chemical reactor networks in micro-mixing combustor[J]. Thermal Power Generation, 2025 , 54 (9) : 125 -134 . DOI: 10.19666/j.rlfd.202411240
Funding
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  • National Science and Technology Major Project(Y2019-I-0022-0021)
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Year 2025 volume 54 Issue 9
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Article Info
doi: 10.19666/j.rlfd.202411240
  • Receive Date：2024-11-28
  • Online Date：2026-03-05
  • Published：2025-09-25
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History
  • Received：2024-11-28
Funding
National Science and Technology Major Project(Y2019-I-0022-0021)
Affiliations
    1.Key Laboratory of Advanced Energy and Power, Institute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing 100190, China
    2.School of Engineering Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
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https://castjournals.cast.org.cn/joweb/rlfd/EN/10.19666/j.rlfd.202411240
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