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Related Experiment Videos

[Flame temperature distribution measurement of solid propellants].

Wen-hua Zhao1, Shu-guang Zhu, Yan Li

  • 1Department of Engineering Mechanics, Tsinghua University, Beijing 100084, China.

Guang Pu Xue Yu Guang Pu Fen Xi = Guang Pu
|March 15, 2005
PubMed
Summary

Measuring high-temperature flames using spectral lines is challenging. This study introduces an improved spectral line intensity method, replacing single line measurements with total intensity for accurate temperature distribution analysis.

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Area of Science:

  • Spectroscopy
  • Combustion diagnostics
  • High-temperature physics

Context:

  • High-temperature bodies like flames emit complex spectra.
  • Emission spectra include lines, bands, and continuous radiation.
  • Spectral lines can overlap, complicating single-line intensity measurements.

Purpose:

  • To address the difficulty of measuring temperature using single spectral line intensities in complex high-temperature environments.
  • To develop an improved spectral method for temperature measurement in flames.
  • To compare the novel method with traditional thermocouple measurements.

Summary:

  • A novel spectral line intensity method is proposed, replacing single line intensity with the total intensity of multiple spectral lines.
  • This approach simplifies temperature measurement in environments with overlapping spectral lines.

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  • The method was successfully applied to measure temperature distribution, showing good agreement with thermocouple data.

    • Impact:

    • Provides a more robust method for temperature diagnostics in high-temperature combustion systems.
    • Offers an alternative to traditional contact-based temperature measurements.
    • Enhances the understanding and control of high-temperature chemical processes.