正庚烷氧化基态OH基浓度时程吸收光谱诊断

许星长; 伍宏环; 黄文林; 张鑫; 黄佐华; 张英佳

doi:10.7652/xjtuxb202109013

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正庚烷氧化基态OH基浓度时程吸收光谱诊断

更新时间：2025-07-09

- 正庚烷氧化基态OH基浓度时程吸收光谱诊断
- Laser Absorption Spectrum Measurement of OH Concentration Time-Histories in n-heptane Oxidation
- 西安交通大学学报 2021年55卷第9期页码：113-120+140
- 作者机构：
  
  西安交通大学动力工程多相流国家重点实验室,西安,710049
- 作者简介：
- 基金信息：
  
  : 2021-03-11。作者简介: 许星长(1993—),男,硕士生;张英佳(通信作者),男,教授。基金项目: 国家自然科学基金资助项目(51888103);陕西省杰出青年科学基金资助项目(2018JC-002)
- DOI：10.7652/xjtuxb202109013
  中图分类号： TN23
- 网络首发：2021-09-10，
  
  纸质出版：2021
- 稿件说明：
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许星长, 伍宏环, 黄文林, 等. 正庚烷氧化基态OH基浓度时程吸收光谱诊断[J]. 西安交通大学学报, 2021,55(9):113-120+140.

Laser Absorption Spectrum Measurement of OH Concentration Time-Histories in n-heptane Oxidation[J]. 2021, 55(9): 113-120+140.
许星长, 伍宏环, 黄文林, 等. 正庚烷氧化基态OH基浓度时程吸收光谱诊断[J]. 西安交通大学学报, 2021,55(9):113-120+140. DOI： 10.7652/xjtuxb202109013.

Laser Absorption Spectrum Measurement of OH Concentration Time-Histories in n-heptane Oxidation[J]. 2021, 55(9): 113-120+140. DOI： 10.7652/xjtuxb202109013.

摘要

为了提供宽温度范围下正庚烷模型的微观验证数据

利用激波管反射激波方法结合紫外吸收光谱诊断技术

以OH基的A-X(0

0)跃迁R

(5)谱线中306.686 8 nm为中心诊断波长

测量了温度1 197～1 690 K、压力150 kPa、当量比1.0、燃料初始体积分数0.1%下

正庚烷/氧气/氩气混合气氧化过程中OH基浓度时程。结果表明

激波管真空度和漏气率是影响OH基浓度峰值的主导因素

结果分析中必须给予考虑以确保实验结果的准确性。实验观测到了正庚烷氧化过程OH基浓度时程演变的3种形态

发现入射激波引起的非理想物理边界层效应对OH基浓度时程测量影响显著。与已有的5个代表性正庚烷模型预测值比较发现

当前工况下模型可准确预测各温度下OH基浓度时程演变趋势

但各模型在同时预测宏观点火延迟和微观OH基浓度方面仍有缺陷

温度越低

各模型对点火延迟期的预测偏差越大。反应(·overC)H

+H(·overO)

=CH

(·overO)+(·overO)H对正庚烷模型点火延迟预测性能影响较大

对该反应动力学参数的深入研究有助于完善正庚烷机理。

Abstract

To provide microscopic validation data for n-heptane models over a wide temperature range

microsecond-resolved OH concentration time-histories were measured behind reflected shock waves in the oxidation of stoichiometric n-heptane(volume fraction of 0.1%)/O

/Ar mixtures over the temperature(T

)range of 1 197-1 690 K at the pressures(p

)around 150 kPa. The OH time-histories were monitored by narrow-linewidth ring dye laser absorption near 306.7 nm at the well-characterized R

(5)transition of the OH A-X(0

0)band. Results reveal that vacuum degre

e and leaking rates are the two dominant factors affecting peak value of the measured OH concentrations. Three morphologies of OH time-histories in n-heptane oxidation were observed

and the non-ideal physical boundary layer effect caused by incident shock wave shows a significant effect on OH concentration. Five commonly used mechanisms of n-heptane generally show acceptable predictions in the trend of OH time-histories at various temperatures

but are still not satisfactory in predicting both ignition delay time and OH time-histories simultaneously

and it shows that the lower the temperature

the greater the deviation between the model simulations and experimental measurements during induced ignition time. Reaction of(·overC)H

+H(·overO)

=CH

(·overO)+(·overO)H has a great impact on the predictions in ignition delay times of n-heptane models

and further study on the kinetic parameters of this reaction is beneficial to refining the n-heptane models.

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references

VASU S S, DAVIDSON D F, HANSON R K. OH time-histories during oxidation of n-heptane and methylcyclohexane at high pressures and temperatures [J]. Combustion and Flame, 2009, 156(4): 736-749.

DAVIDSON D F, OEHLSCHLAEGER M A, HERBON J T, et al. Shock tube measurements of iso-octane ignition times and OH concentration time histories [J]. Proceedings of the Combustion Institute, 2002, 29(1): 1295-1301.

DAVIDSON D F, HERBON J T, Horning D C, et al. OH concentration time histories in n-alkane oxidation [J]. International Journal of Chemical Kinetics, 2001, 33(12): 775-783.

DAVIDSON D F, HONG Z, PILLA G L, et al. Multi-species time-history measurements during n-heptane oxidation behind reflected shock waves [J]. Combustion and Flame, 2010, 157(10): 1899-1905.

CAMPBELL M F, WANG S, GOLDENSTEIN C S, et al. Constrained reaction volume shock tube study of n-heptane oxidation: ignition delay times and time-histories of multiple species and temperature [J]. Proceedings of the Combustion Institute, 2015, 35(1): 231-239.

LIU D, GIRI B R, FAROOQ A. A shock tube kinetic study on the branching ratio of methanol+OH reaction [J]. Proceedings of the Combustion Institute, 2019, 37(1): 153-162.

唐青龙, 耿超, 李明坤, 等. 激光诱导荧光法测量内燃机双燃料燃烧过程中的甲醛和羟基 [J]. 物理化学学报, 2015, 031(012): 2269-2277.

TANG Qinglong, GENG Chao, LI Mingkun, et al. Laser-induced fluorescence measurements of formaldehyde and OH radicals in dual-fuel combustion process in engine [J]. Acta Physico-Chimica Sinica, 2015, 31(12): 2269-2277.

刘海峰, 文铭升, 杨智, 等. 发动机缸内自燃着火与火焰传播的调控 [J]. 内燃机学报, 2020, 38(3): 12-21.

LIU Haifeng, WEN Mingsheng, YANG Zhi, et al. Optical diagnostics on combustion mode between auto-ignition and flame propagation in engines [J]. Transactions of CSICE, 2020, 38(3): 12-21.

张猛, 王金华, 谢永亮, 等. CH4/H2/air预混湍流火焰前锋面结构探测 [J]. 西安交通大学学报, 2013, 47(11): 14-18.

ZHANG Men, WANG Jinhua, XIE Yongliang, et al. Measurement of flame front structure of turbulent premixed flames for CH4/H2/air mixtures [J]. Journal of Xi'an Jiaotong University, 2013, 47(11): 14-18.

CHAOS M, KAZAKOV A, ZHAO Z, et al. A high-temperature chemical kinetic model for primary reference fuels [J]. International Journal of Chemical Kinetics, 2007, 39(7): 399-414.

CURRAN H J, GAFFURI P, PITZ W J, et al. A comprehensive modeling study of n-heptane oxidation [J]. Combustion and Flame, 1998, 114: 149-177.

SHUL'PINA L S, KIRILLOVA M V, POMBEIRO A J L, et al. Alkane oxidation by the H2O2-NaVO3-H2SO4 system in acetonitrile and water [J]. Tetrahedron, 2009, 65(12): 2424-2429.

ZHANG Y, HUANG Z, WEI L, et al. Experimental and modeling study on ignition delays of lean mixtures of methane, hydrogen, oxygen, and argon at elevated pressures [J]. Combustion and Flame, 2012, 159(3): 918-931.

MORLEY C. Gaseq: a chemical equilibrium program for Windows [CP/OL]. [2021-02-15]. http:∥www. gaseq.co.uk/.

ZHANG K, BANYON C, BUGLER J, et al. An updated experimental and kinetic modeling study of n-heptane oxidation [J]. Combustion and Flame, 2016, 172: 116-135.

HALL J M, RICKARD M J A, PETERSEN E L. Comparison of characteristic time diagnostics for ignition and oxidation of fuel/oxidizer mixtures behind reflected shock waves [J]. Combustion Science and Technology, 2007, 177: 455-483.

MEHL M, PITZ W J, WESTBROOK C K, et al. Kinetic modeling of gasoline surrogate components and mixtures under engine conditions [J]. Proceedings of the Combustion Institute, 2011, 33(1): 193-200.

HERBINET O, HUSSON B, SERINYEL Z, et al. Experimental and modeling investigation of the low-temperature oxidation of n-heptane [J]. Combustion and Flame, 2012, 159(12): 3455-3471.

PELUCCHI M, BISSOLI M, CAVALLOTTI C, et al. Improved kinetic model of the low-temperature oxidation of n-heptane [J]. Energy and Fuels, 2014, 28: 7178-7193.

SEIDEL L, MOSHAMMER, K, WANG X, et al. Comprehensive kinetic modeling and experimental study of a fuel-rich, premixed n-heptane flame [J]. Combustion and Flame, 2005, 162(5): 2045-2058.

PANG G A. Experimental determination of rate constants for reactions of the hydroxyl radical with alkanes and alcohols [D]. Stanford, CA, USA: Stanford University, 2012.

OEHLSCHLAEGER M A, DAVIDSON D F, HERBON J T, et al. Shock tube measurements of branched alkane ignition times and OH concentration time histories [J]. International Journal of Chemical Kinetics, 2004, 36(2): 67-78.

WANG S, DAVIDSON D F, HANSON R K. Shock tube measurements of OH concentration time-histories in benzene, toluene, ethylbenzene and xylene oxidation [J]. Proceedings of the Combustion Institute, 2019, 37: 163-170.

HONG Z, DAVIDSON D F, BARBOUR E A, et al. A new shock tube study of the H+O2=OH+O reaction rate using tunable diode laser absorption of H2O near 2.5 μm [J]. Proceedings of the Combustion Institute, 2011, 33: 309-316.

HE X, ZIGLER B T, WALTON S M, et al. A rapid compression facility study of OH time histories during iso-octane ignition [J]. Combustion and Flame, 2006, 145(3): 552-570.

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