中国物理B ›› 2018, Vol. 27 ›› Issue (7): 74213-074213.doi: 10.1088/1674-1056/27/7/074213

• ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS • 上一篇    下一篇

Laser absorption spectroscopy for high temperature H2O time-history measurement at 2.55 μm during oxidation of hydrogen

Yu-Dan Gou(苟于单), De-Xiang Zhang(张德翔), Yi-Jun Wang(王易君), Chang-Hua Zhang(张昌华), Ping Li(李萍), Xiang-Yuan Li(李象远)   

  1. 1 Institute of Atomic and Molecular Physics, Sichuan University, Chengdu 610065, China;
    2 College of Chemical Engineering, Sichuan University, Chengdu 610065, China
  • 收稿日期:2018-01-30 修回日期:2018-03-15 出版日期:2018-07-05 发布日期:2018-07-05
  • 通讯作者: Chang-Hua Zhang E-mail:zhangchanghua@scu.edu.cn
  • 基金资助:

    Project supported by the National Key Research and Development Program of China (Grant Nos. 2017YFB0202400 and 2017YFB0202401).

Laser absorption spectroscopy for high temperature H2O time-history measurement at 2.55 μm during oxidation of hydrogen

Yu-Dan Gou(苟于单)1, De-Xiang Zhang(张德翔)1, Yi-Jun Wang(王易君)1, Chang-Hua Zhang(张昌华)1, Ping Li(李萍)1, Xiang-Yuan Li(李象远)2   

  1. 1 Institute of Atomic and Molecular Physics, Sichuan University, Chengdu 610065, China;
    2 College of Chemical Engineering, Sichuan University, Chengdu 610065, China
  • Received:2018-01-30 Revised:2018-03-15 Online:2018-07-05 Published:2018-07-05
  • Contact: Chang-Hua Zhang E-mail:zhangchanghua@scu.edu.cn
  • Supported by:

    Project supported by the National Key Research and Development Program of China (Grant Nos. 2017YFB0202400 and 2017YFB0202401).

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摘要：

Concentration time-histories of H2O were measured behind reflected shock waves during hydrogen combustion. Experiments were conducted at temperatures of 1117-1282 K, the equivalence ratios of 0.5 and 0.25, and a pressure at 2 atm using a mixture of H2/O2 highly diluted with argon. H2O was monitored using tunable mid-infrared diode laser absorption at 2.55 μm (3920.09 cm-1). These time-histories provide kinetic targets to test and refine reaction mechanisms for hydrogen. Comparisons were made with the predictions of four detailed kinetic mechanisms published in the last four years. Such comparisons of H2O concentration profiles indicate that the AramcoMech 2.0 mechanism yields the best agreement with the experimental data, while CRECK, San Diego, and HP-Mech mechanisms show significantly poor predictions. Reaction pathway analysis for hydrogen oxidation indicates that the reaction H+OH+M=H2O+M is the key reaction for controlling the H2O formation by hydrogen oxidation. It is inferred that the discrepancy of the conversion percentage from H to H2O among these four mechanisms induces the difference of performance on H2O time-history predictions. This work demonstrates the potential of time-history measurement for validation of large reaction mechanisms.

关键词: tunable diode laser absorption spectroscopy, H2O time-history profile, combustion process, reaction mechanism

Abstract:

Concentration time-histories of H2O were measured behind reflected shock waves during hydrogen combustion. Experiments were conducted at temperatures of 1117-1282 K, the equivalence ratios of 0.5 and 0.25, and a pressure at 2 atm using a mixture of H2/O2 highly diluted with argon. H2O was monitored using tunable mid-infrared diode laser absorption at 2.55 μm (3920.09 cm-1). These time-histories provide kinetic targets to test and refine reaction mechanisms for hydrogen. Comparisons were made with the predictions of four detailed kinetic mechanisms published in the last four years. Such comparisons of H2O concentration profiles indicate that the AramcoMech 2.0 mechanism yields the best agreement with the experimental data, while CRECK, San Diego, and HP-Mech mechanisms show significantly poor predictions. Reaction pathway analysis for hydrogen oxidation indicates that the reaction H+OH+M=H2O+M is the key reaction for controlling the H2O formation by hydrogen oxidation. It is inferred that the discrepancy of the conversion percentage from H to H2O among these four mechanisms induces the difference of performance on H2O time-history predictions. This work demonstrates the potential of time-history measurement for validation of large reaction mechanisms.

Key words: tunable diode laser absorption spectroscopy, H2O time-history profile, combustion process, reaction mechanism

中图分类号:  (Laser spectroscopy)

  • 42.62.Fi
42.55.Px (Semiconductor lasers; laser diodes) 82.33.Vx (Reactions in flames, combustion, and explosions)