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Three-Dimensional Combustion Field Temperature Measurement Based on Planar Array Sensors.

Xiaodong Huang1, Zhiling Li1, Jia Wang2

  • 1Department of Intelligent and Information Engineering, Taiyuan University, Taiyuan 030051, China.

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|January 28, 2026
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Summary
This summary is machine-generated.

This study introduces a novel area-array sensor method for precise 3D flame temperature field measurement, overcoming limitations of traditional tunable diode laser absorption tomography (TDLAT). This enhanced combustion diagnosis offers high-resolution imaging for complex flame scenarios.

Keywords:
TDLASarea array sensortemperature measurementthree-dimensional imaging

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Area of Science:

  • Optical diagnostics
  • Combustion science
  • Spectroscopy

Background:

  • High-resolution 3D temperature fields are crucial for flame combustion studies.
  • Tunable diode laser absorption tomography (TDLAT) is effective but limited by line-of-sight measurements, resulting in reduced data dimensionality.
  • Analyzing complex combustion fields requires advanced diagnostic techniques.

Purpose of the Study:

  • To propose and validate a new method for accurate 3D flame temperature field measurement using area-array sensor-coupled absorption spectroscopy.
  • To enhance combustion diagnosis by overcoming the dimensionality limitations of traditional TDLAT.
  • To achieve high-resolution, multidimensional temperature field reconstruction.

Main Methods:

  • Utilizing absorption spectroscopy coupled with an area-array sensor.
  • Configuring a laser beam into a cone shape to traverse the combustion field.
  • Reconstructing the 3D temperature field from projection signals captured by the area-array sensor.
  • Validating the method through numerical simulations and comparison with experimental TDLAT results.

Main Results:

  • The proposed method accurately measures 3D flame temperature fields.
  • Numerical simulations confirmed the algorithm's accuracy and robustness.
  • Experimental comparisons with TDLAT demonstrated high precision.
  • Effective measurement of temperature fields in complex flame imaging scenarios was achieved.

Conclusions:

  • The area-array sensor-coupled absorption spectroscopy method provides a robust and precise approach for 3D flame temperature field measurement.
  • This technique significantly enhances combustion diagnosis capabilities compared to traditional TDLAT.
  • The developed system is suitable for high-resolution imaging in complex combustion environments.