中国物理B ›› 2019, Vol. 28 ›› Issue (1): 14206-014206.doi: 10.1088/1674-1056/28/1/014206

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

Experimental determination of distributions of soot particle diameter and number density by emission and scattering techniques

Huawei Liu(柳华蔚), Shu Zheng(郑树)   

  1. Key Laboratory of Condition Monitoring and Control for Power Equipment(Ministry of Education), School of Energy, Power and Mechanical Engineering, North China Electric Power University, Beijing 102206, China
  • 收稿日期:2018-07-25 修回日期:2018-08-24 出版日期:2019-01-05 发布日期:2019-01-05
  • 通讯作者: Huawei Liu E-mail:liuhw@ncepu.edu.cn
  • 基金资助:

    Project supported by the National Key Research and Development Program of China (Grant No. 2017YFB0601900), the National Natural Science Foundation of China (Grant Nos. 51827808, 51821004, and 51406095), the Fundamental Research Funds for the Central Universities, China (Grant Nos. 2018ZD03 and 2017ZZD005), and Science and Technology Partnership Program, Ministry of Science and Technology of China (Grant No. KY201401003).

Experimental determination of distributions of soot particle diameter and number density by emission and scattering techniques

Huawei Liu(柳华蔚), Shu Zheng(郑树)   

  1. Key Laboratory of Condition Monitoring and Control for Power Equipment(Ministry of Education), School of Energy, Power and Mechanical Engineering, North China Electric Power University, Beijing 102206, China
  • Received:2018-07-25 Revised:2018-08-24 Online:2019-01-05 Published:2019-01-05
  • Contact: Huawei Liu E-mail:liuhw@ncepu.edu.cn
  • Supported by:

    Project supported by the National Key Research and Development Program of China (Grant No. 2017YFB0601900), the National Natural Science Foundation of China (Grant Nos. 51827808, 51821004, and 51406095), the Fundamental Research Funds for the Central Universities, China (Grant Nos. 2018ZD03 and 2017ZZD005), and Science and Technology Partnership Program, Ministry of Science and Technology of China (Grant No. KY201401003).

摘要:

A diagnostics method was presented that uses emission and scattering techniques to simultaneously determine the distributions of soot particle diameter and number density in hydrocarbon flames. Two manta G-504C cameras were utilized for the scattering measurement, with consideration of the attenuation effect in the flames according to corresponding absorption coefficients. Distributions of soot particle diameter and number density were simultaneously determined using the measured scattering coefficients and absorption coefficients under multiple wavelengths already measured with a SOC701V hyper-spectral imaging device, according to the Mie scattering theory. A flame was produced using an axisymmetric laminar diffusion flame burner with 194 mL/min ethylene and 284 L/min air, and distributions of particle diameter and number density for the flame were presented. Consequently, the distributions of soot volume fraction were calculated using these two parameters as well, which were in good agreement with the results calculated according to the Rayleigh approximation, demonstrating that the proposed diagnostic method is capable of simultaneous determination of the distributions of soot particle diameter and number density.

关键词: soot particle diameter, soot particle number density, soot volume fraction, scattering measurement

Abstract:

A diagnostics method was presented that uses emission and scattering techniques to simultaneously determine the distributions of soot particle diameter and number density in hydrocarbon flames. Two manta G-504C cameras were utilized for the scattering measurement, with consideration of the attenuation effect in the flames according to corresponding absorption coefficients. Distributions of soot particle diameter and number density were simultaneously determined using the measured scattering coefficients and absorption coefficients under multiple wavelengths already measured with a SOC701V hyper-spectral imaging device, according to the Mie scattering theory. A flame was produced using an axisymmetric laminar diffusion flame burner with 194 mL/min ethylene and 284 L/min air, and distributions of particle diameter and number density for the flame were presented. Consequently, the distributions of soot volume fraction were calculated using these two parameters as well, which were in good agreement with the results calculated according to the Rayleigh approximation, demonstrating that the proposed diagnostic method is capable of simultaneous determination of the distributions of soot particle diameter and number density.

Key words: soot particle diameter, soot particle number density, soot volume fraction, scattering measurement

中图分类号:  (Imaging and optical processing)

  • 42.30.-d
42.68.Ay (Propagation, transmission, attenuation, and radiative transfer)