正十二烷喷雾火焰中碳烟的瞬态生成特性

玄铁民; 史智钊; 商伟伟; 何志霞; 王谦

doi:10.7652/xjtuxb202403002

您当前的位置：

首页 >

文章列表页 >

正十二烷喷雾火焰中碳烟的瞬态生成特性

—————————————————————— | 更新时间：2025-07-09

- 正十二烷喷雾火焰中碳烟的瞬态生成特性
- A Study on Transient In-Flame Soot Evolution of n-Dodecane Spray
- 西安交通大学学报 2024年58卷第3期页码：15-24
- 作者机构：
  
  1. 江苏大学能源与动力工程学院,江苏,镇江,212013
  2. 河南科技大学车辆与交通工程学院,河南,洛阳,471000
  3. 江苏大学能源研究院,江苏,镇江,212013
- 作者简介：
  
  : 2023-08-14。作者简介: 玄铁民(1986—),男,副教授
  何志霞(通信作者),女,教授,博士生导师。基金项目: 国家自然科学基金资助项目(52276116,51906087)。
- 基金信息：
  
  : 2023-08-14。作者简介: 玄铁民(1986—),男,副教授;何志霞(通信作者),女,教授,博士生导师。基金项目: 国家自然科学基金资助项目(52276116,51906087)。
- DOI：10.7652/xjtuxb202403002
  中图分类号： TK40
- 网络首发：2024-03-10，
  
  纸质出版：2024
- 稿件说明：
移动端阅览
玄铁民, 史智钊, 商伟伟, 等. 正十二烷喷雾火焰中碳烟的瞬态生成特性[J]. 西安交通大学学报, 2024,58(3):15-24.

XUAN Tiemin, SHI Zhizhao, SHANG Weiwei, et al. A Study on Transient In-Flame Soot Evolution of n-Dodecane Spray[J]. 2024, 58(3): 15-24.
玄铁民, 史智钊, 商伟伟, 等. 正十二烷喷雾火焰中碳烟的瞬态生成特性[J]. 西安交通大学学报, 2024,58(3):15-24. DOI： 10.7652/xjtuxb202403002.

XUAN Tiemin, SHI Zhizhao, SHANG Weiwei, et al. A Study on Transient In-Flame Soot Evolution of n-Dodecane Spray[J]. 2024, 58(3): 15-24. DOI： 10.7652/xjtuxb202403002.

摘要

针对压燃式发动机中碳烟演化过程难以被实验准确捕捉的问题

研究了高温高压环境中正十二烷喷雾燃烧焰中碳烟瞬态生成特性及动力学行为

在实验方面

应用消光辐射联合技术以及燃烧成像测速技术

同步获得高温高压环境中单孔喷油器正十二烷喷雾燃烧火焰中的碳烟体积分数、碳烟温度和碳烟速度场的瞬态分布; 数值计算方面

基于OpenFOAM环境

发展欧拉喷雾模型和非稳态火焰面进度变量湍流燃烧模型的耦合模型

喷雾燃烧过程的数值计算结果与实验数据有高度的一致性。研究结果表明:相比于参考工况

低喷油压力工况火焰浮起长度更短

碳烟在当量比Φ>2区间驻留时间更长

推动了碳烟的生成

碳烟峰值质量增加了80%; 高温环境工况碳烟在当量比Φ>2区间驻留时间没有明显差异

但更短的火焰浮起长度使得燃料在更高的当量比开始燃烧

导致其碳烟峰值质量增加了88%; 富氧工况的燃烧温度最高

碳烟粒子运动速度增大

使得碳烟在当量比Φ>2区间驻留时间明显减少

同时火焰内部当量比较小

因而碳烟峰值质量减少了42%。

Abstract

Capturing the transient evolution of soot under diesel-like conditions through experimental methods is challenging. The transient formation characteristics and kinetic of soot in-flame of n-dodecane spray under high-temperature and high-pressure conditions is investigated in present study. Experimentally

the combined extinction and radiation(CER)methodology and combustion image velocimetry(CIV)are applied to capture the transient distributions of soot volume fraction

soot temperature

and soot velocity field of n-dodecane spray flames from a single-hole injector under high-temperature and high-pressure conditions. Numerically

a coupled model combining the Eulerian spray model and unsteady flame progress variable combustion model is developed in the OpenFOAM environment. The numerical results of the spray combustion process exhibit a high level of agreement with experimental data. The results show that

compared to the reference condition

in the lower injection pressure condition

the shorter lift-off length(LOL)and the longer soot residence time within the interval equivalence ratio Φ>2 significantly propel the formation of soot

leading to an 80% increase in peak soot mass. In the higher-temperature condition

there is no significant difference in the soot residence time within the interval Φ>2

while the shorter LOL leads the fuel to ignite at higher equivalence ratios

resulting in a significant increase in soot formation

with an 88% increase in peak soot mass. In the oxygen-rich condition

the flame temperature is the highest

which increase the particle velocity of soot. Consequently

the residence time of soot within the interval Φ>2 is significantly reduced. Additionally

owing to the lower equivalence ratio in the flame

peak soot mass is reduced by 42%.

关键词

Keywords

references

SKEEN S A, MANIN J, PICKETT L M, et al. A progress review on soot experiments and modeling in the engine combustion network(ECN)[J]. SAE International Journal of Engines, 2016, 9(2): 883-898.

XUAN Tiemin, PASTOR J V, GARCÍA-OLIVER J M, et al. In-flame soot quantification of diesel sprays under sooting/non-sooting critical conditions in an optical engine [J]. Applied Thermal Engineering, 2019, 149: 1-10.

PICKETT L M, SIEBERS D L. Soot in diesel fuel jets: effects of ambient temperature, ambient density, and injection pressure [J]. Combustion and Flame, 2004, 138(1/2): 114-135.

贺鹏飞, 李铁, 姜浩, 等. 柴油喷雾火焰中碳烟颗粒形貌及纳观结构特性 [J]. 内燃机学报, 2019, 37(3): 251-256.

HE Pengfei, LI Tie, JIANG Hao, et al. Effect of oxygen concentration on soot morphology and nanostructure in diesel spray flame [J]. Transactions of CSICE, 2019, 37(3): 251-256.

ZHANG Ji, JING Wei, ROBERTS W L, et al. Soot temperature and KL factor for biodiesel and diesel spray combustion in a constant volume combustion chamber [J]. Applied Energy, 2013, 107: 52-65.

XUAN Tiemin, DESANTES J M, PASTOR J V, et al. Soot temperature characterization of spray a flames by combined extinction and radiation methodology [J]. Combustion and Flame, 2019, 204: 290-303.

张志强, 刘一泽, 邬斌扬, 等. 喷孔直径对重型柴油机燃烧和排放的影响 [J]. 内燃机学报, 2022, 40(2): 97-105.

ZHANG Zhiqiang, LIU Yize, WU Binyang, et al. Effect of nozzle diameter on combustion and emissions of a heavy duty diesel engine [J]. Transactions of CSICE, 2022, 40(2): 97-105.

HADADPOUR A, JANGI M, PANG K M, et al. The role of a split injection strategy in the mixture formation and combustion of diesel spray: a large-eddy simulation [J]. Proceedings of the Combustion Institute, 2019, 37(4): 4709-4716.

JEON J, PARK S. Effects of pilot injection strategies on the flame temperature and soot distributions in an optical CI engine fueled with biodiesel and conventional diesel [J]. Applied Energy, 2015, 160: 581-591.

PICKETT L M, SIEBERS D L. Non-sooting, low flame temperature mixing-controlled DI diesel combustion [C]//SAE 2004 World Congress Exhibition. Warrendale, PA, USA: SAE International, 2004: 2004-01-1399.

瞿磊, 王忠, 李瑞娜, 等. 甲醇/生物柴油燃烧颗粒的结构特征研究 [J]. 西安交通大学学报, 2016, 50(5): 81-86.

QU Lei, WANG Zhong, LI Ruina, et al. Structural characteristics of methanol/biodiesel combustion particles [J]. Journal of Xi'an Jiaotong University, 2016, 50(5): 81-86.

National Technology and Engineering Solutions of Sandia. Engine combustion network [DB/OL]. [2023-04-08]. https://ecn.sandia.gov/.

DESANTES J M, GARCÍA-OLIVER J M, GARCÍA A, et al. Optical study on characteristics of non-reacting and reacting diesel spray with different strategies of split injection [J]. International Journal of Engine Research, 2019, 20(6): 606-623.

CHOI M Y, MULHOLLAND G W, HAMINS A, et al. Comparisons of the soot volume fraction using gravimetric and light extinction techniques [J]. Combustion and Flame, 1995, 102(1/2): 161-169.

KÖYLÜ Ü Ö, FAETH G M. Optical properties of overfire soot in buoyant turbulent diffusion flames at long residence times [J]. Journal of Heat Transfer, 1994, 116(1): 152-159.

ZHA Kan, BUSCH S, WAREY A, et al. A study of piston geometry effects on late-stage combustion in a light-duty optical diesel engine using combustion image velocimetry [J]. SAE International Journal of Engines, 2018, 11(6): 783-804.

DEMBINSKI H, ANGSTROM H E. Swirl and injection pressure effect on post-oxidation flow pattern evaluated with combustion image velocimetry, CIV, and CFD simulation [C]//SAE/KSAE 2013 International Powertrains, Fuels Lubricants Meeting.Warrendale, PA, USA: SAE International, 2013: 2013-01-2577.

DEMBINSKI H W. The effects of injection pressure and swirl on in-cylinder flow pattern and combustion in a compression-ignition engine [J]. International Journal of Engine Research, 2014, 15(4): 444-459.

VALLET A, BURLUKA AA, BORGHI R. Development of a Eulerian model for the “atomization” of a liquid jet [J]. Atomization and Sprays, 2001, 11(6): 619-642.

VALLET A, BORGHI R. Modélisation eulerienne de l'atomisation d'un jet liquid [J]. Comptes Rendus de l'Académie des Sciences-Series IIB-Mechanics-Physics-Astronomy, 1999, 327(10): 1015-1020.

WINKLINGER J F. Implementation of a combustion model based on the flamelet concept and its application to turbulent reactive sprays [D]. Valencia: Universitat Politècnica de València, 2014.[22] PÉREZ SÁNCHEZ E J. Application of a flamelet-based combustion model to diesel-like reacting sprays [D]. Valencia: Universitat Politècnica de València, 2018.

DESANTES J M, GARCIA-OLIVER J M, NOVELLA R, et al. A numerical study of the effect of nozzle diameter on diesel combustion ignition and flame stabilization [J]. International Journal of Engine Research, 2020, 21(1): 101-121.

NABER J D, SIEBERS D L. Effects of gas density and vaporization on penetration and dispersion of diesel sprays [C]//International Congress Exposition.Warrendale, PA, USA: SAE International, 1996: 960034.

浏览量

下载量

CSCD

文章被引用时，请邮件提醒。

提交

工具集

关联资源

电动车辆间接热系统快速除湿响应迟滞机理及优化控制策略

张角凹坑气膜孔对双层壁气膜冷却特性的影响

采用机器学习的大规模并行程序I/O性能建模与预测方法

混合电解槽阵列协同的风光耦合制氢系统双层多目标优化

面向高海拔空冷发电机防晕性能演化规律的电热耦合研究