Simulation and Experimental Verification for Formation and Radiation Characteristics of Flames Soot with Simplified Chemical Reaction

ZHANG Chenyang; CHEN Wei; LI Hongxu; WANG Liang; ZENG Qi; CAO Jun; REN Tao

doi:10.19805/j.cnki.jcspe.2026.240723

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Simulation and Experimental Verification for Formation and Radiation Characteristics of Flames Soot with Simplified Chemical Reaction

更新时间：2026-10-10

- Simulation and Experimental Verification for Formation and Radiation Characteristics of Flames Soot with Simplified Chemical Reaction
- Chinese Journal of Power Engineering Vol. 46, Issue 2, Pages: 1-9(2026)
- 作者机构：
  
  1. 上海交通大学中英国际低碳学院,上海,200240
  2. 中国航发湖南动力机械研究所,湖南,株洲,412002
- 作者简介：
- 基金信息：
- DOI：10.19805/j.cnki.jcspe.2026.240723
  CLC：
- Online First：10 February 2026，
  
  Published：10 February 2026
- 稿件说明：
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张辰飏,陈玮,李洪绪,王良,曾琦,曹俊,任涛. 简化化学反应条件下火焰碳烟生成与辐射特性的仿真和实验验证动力工程学报, 2026, 46(2): 1-9 https://doi.

org/10.19805/j.cnki.jcspe.2026.240723
张辰飏,陈玮,李洪绪,王良,曾琦,曹俊,任涛. 简化化学反应条件下火焰碳烟生成与辐射特性的仿真和实验验证动力工程学报, 2026, 46(2): 1-9 https://doi. DOI： 10.19805/j.cnki.jcspe.2026.240723.

org/10.19805/j.cnki.jcspe.2026.240723 DOI：

摘要

碳烟是燃烧中关键的辐射产物

对能效和污染物排放具有显著影响。然而

碳烟生成过程的复杂性使得现有模型大多依赖复杂化学反应机理

导致计算成本较高

限制了其在工程应用中的推广。为此

利用ANSYS-Fluent软件中的用户自定义函数

嵌入了层流烟点模型和全光谱

分布辐射模型

以高效模拟乙烯层流扩散火焰中的碳烟生成和辐射特性。使用互补式金属氧化物半导体(complementary metal oxide semiconductor

CMOS)相机和傅里叶红外光谱仪对不同掺混比条件下的碳烟浓度场和光谱辐射强度进行了测量

用于验证模型的有效性。结果表明

提出的模型通过一步化学反应和一个额外的物质输运方程

就能够准确捕捉火焰中碳烟分布的形态特征

在不同高度下的碳烟径向平均体积分数分布与实验数据具有良好的一致性。同时

不同高度下的光谱辐射强度模拟结果与测量值匹配良好

验证了该模型的高效性和准确性

为火焰碳烟生成与辐射特性工程计算提供了一种可靠的工具。

Abstract

Soot is a crucial radiative product in combustion processes

exerting a significant influence on energy efficiency and pollutant emissions. However

the complexity of the soot formation process has led most existing models to rely on complex chemical reaction mechanisms

resulting in high computational costs and limiting corresponding widespread adoption in engineering applications. To address this issue

a laminar smoke point model and a full-spectrum

-distribution radiation model were embedded using user-defined functions in ANSYS-Fluent software to efficiently simulate soot formation and radiation chara

cteristics in ethylene laminar diffusion flames. The soot concentration fields and spectral radiative intensities under different blending ratios were measured by using a complementary metal oxide semiconductor (CMOS) camera and a Fourier-transform infrared spectrometer

so as to validate the effectiveness of the overall model. Results demonstrate that

through a single-step chemical reaction and an additional species transport equation

the proposed model can accurately capture the morphological characteristics of soot distribution within the flame. The radial average volume fraction distributions of soot at different heights exhibit good agreement with experimental data. Meanwhile

the simulated spectral radiative intensities at different heights match well with the measured values

validating the efficiency and accuracy of the overall model. This provides a reliable tool for engineering calculations of soot formation and radiation characteristics in flames.

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references

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