Application of automatic generation of chemical reactor networks in micro-mixing combustor

帅佳玮; 雷福林; 张哲巅

doi:10.19666/j.rlfd.202411240

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Application of automatic generation of chemical reactor networks in micro-mixing combustor

Thermal Power Generation Vol. 54, Issue 9, Pages: 125-134(2025)

更新时间：2026-08-11

- Application of automatic generation of chemical reactor networks in micro-mixing combustor
- 作者机构：
  
  1. 中国科学院先进能源动力重点实验室(工程热物理研究所)
  2. 中国科学院大学工程科学学院
- 作者简介：
- 基金信息：
- DOI：10.19666/j.rlfd.202411240
  CLC： TK471
- Published：2025
- 稿件说明：
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[1]帅佳玮,雷福林,张哲巅.化学反应器网络自动生成方法在微混燃烧室中的应用[J],2025,54(09):125-134.
[1]帅佳玮,雷福林,张哲巅.化学反应器网络自动生成方法在微混燃烧室中的应用[J],2025,54(09):125-134. DOI： 10.19666/j.rlfd.202411240.

DOI：10.19666/j.rlfd.202411240.

摘要

计算流体力学-化学反应器网络(computational fluid dynamics-chemical reactor network

CFD-CRN)模拟是一种适合燃气轮机NOx排放预测的方法，基于此方法开发了具有通用性的CRN自动分区/求解程序，并在天然气微混燃烧室上进行应用与验证。通过CFD软件模拟分析微混燃烧室的流动和燃烧特性，建立CRN分区准则：首先将空气区和燃料区提取出来，然后沿轴向主分区，再根据燃料分级沿径向/周向细分区域。结果表明，CRN自动分区/求解程序使用可扩展标记语言XML(extensible markup language)规范化信息接口增强了通用性，适用于复杂燃烧室结构，对微混燃烧室不同工况的NOx排放预测值与实验值相对误差小于11%，并且CFD网格数对CRN预测NOx排放值的影响较小；同时分析了燃料分配比例对微混燃烧室NOx排放的影响，给出了合适的调节范围。该CRN自动分区/求解算法在燃气轮机NOx排放预测方面具有应用潜力。

Abstract

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.

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references

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