中国物理B ›› 2017, Vol. 26 ›› Issue (6): 64207-064207.doi: 10.1088/1674-1056/26/6/064207

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

Wavelength modulation spectroscopy for measurements of gas parameters in combustion field

Dong-Sheng Qu(屈东胜), Yan-Ji Hong(洪延姬), Guang-Yu Wang(王广宇), Hu Pan(潘虎)   

  1. State Key Laboratory of Laser Propulsion & Applications, Equipment Academy, Beijing 101416, China
  • 收稿日期:2016-10-31 修回日期:2017-02-15 出版日期:2017-06-05 发布日期:2017-06-05
  • 通讯作者: Dong-Sheng Qu E-mail:hnqudongsheng@126.com
  • 基金资助:
    Project supported by the Young Scientists Fund of the National Natural Science Foundation of China (Grant No. 21403299).

Wavelength modulation spectroscopy for measurements of gas parameters in combustion field

Dong-Sheng Qu(屈东胜), Yan-Ji Hong(洪延姬), Guang-Yu Wang(王广宇), Hu Pan(潘虎)   

  1. State Key Laboratory of Laser Propulsion & Applications, Equipment Academy, Beijing 101416, China
  • Received:2016-10-31 Revised:2017-02-15 Online:2017-06-05 Published:2017-06-05
  • Contact: Dong-Sheng Qu E-mail:hnqudongsheng@126.com
  • Supported by:
    Project supported by the Young Scientists Fund of the National Natural Science Foundation of China (Grant No. 21403299).

摘要: A novel wavelength modulation spectroscopy sensor for studying gas properties near 1.4 μm is developed, validated and used in a direct-connect supersonic combustion test facility. In this sensor there are two H2O transitions near 7185.60 cm-1 and 7454.45 cm-1 that are used to enable the measurements along the line-of-sight. According to an iterative algorithm, the gas pressure, temperature and species mole fraction can be measured simultaneously. The new sensor is used in the isolator and extender of the supersonic combustion test facility. In the isolator, the sensor resolves the transient and measured pressure, temperature and H2O mole fraction with accuracies of 2.5%, 8.2%, and 7.2%, respectively. Due to the non-uniform characteristic in the extender, the measured results cannot precisely characterize gas properties, but they can qualitatively describe the distinctions of different zones or the changes or fluctuations of the gas parameters.

关键词: wavelength modulation spectroscopy, sensor, gas properties, iterative algorithm

Abstract: A novel wavelength modulation spectroscopy sensor for studying gas properties near 1.4 μm is developed, validated and used in a direct-connect supersonic combustion test facility. In this sensor there are two H2O transitions near 7185.60 cm-1 and 7454.45 cm-1 that are used to enable the measurements along the line-of-sight. According to an iterative algorithm, the gas pressure, temperature and species mole fraction can be measured simultaneously. The new sensor is used in the isolator and extender of the supersonic combustion test facility. In the isolator, the sensor resolves the transient and measured pressure, temperature and H2O mole fraction with accuracies of 2.5%, 8.2%, and 7.2%, respectively. Due to the non-uniform characteristic in the extender, the measured results cannot precisely characterize gas properties, but they can qualitatively describe the distinctions of different zones or the changes or fluctuations of the gas parameters.

Key words: wavelength modulation spectroscopy, sensor, gas properties, iterative algorithm

中图分类号:  (Spectral absorption by atmospheric gases)

  • 42.68.Ca
42.79.-e (Optical elements, devices, and systems)