Journal of the Korean Society for Heat Treatment (열처리공학회지)

The Korean Society for Heat Treatment (한국열처리공학회)
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Real-time Analysis of Exhaust Gas Temperature Field in Turbulent Flow Using Laser Absorption Spectroscopy

레이저흡수분광을 이용한 난류유동 배기가스 온도장 실시간 분석 연구

  • Doo Won Choi (Division of Battery & Automobile Engineering, Silla University)
  • 최두원 (신라대학교 배터리.자동차공학부)
  • Received : 2024.01.24
  • Accepted : 2024.03.22
  • Published : 2024.03.30
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Abstract

This study presents a real-time method that uses Laser Absorption Spectroscopy (LAS) to measure exhaust gas temperatures in turbulent flow fields. It was possible to measure temperature by passing a laser beam through the exhaust gas in a grid pattern, and obtain a temperature distribution image through time series analysis at 0.1 second intervals. Temperature image resolution has been improved with CT reconstruction algorithms. Estimating maximum temperature values and locations enabled 2D temperature analysis, surpassing single-point methods like thermocouples. The accuracy of LAS measurements was evaluated by comparison with thermocouple measurements. This approach will contribute to automotive technology and environmental protection by providing reliable temperature data for interpreting turbulent temperature distributions.

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References

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