Temperature measurement of swirling flames using near-infrared emission spectroscopy of H2O

Gongxi Zhou; Fei Li; Xin Lin; Dongdong Meng; Xilong Yu

doi:10.1117/12.2655917

22 December 2022 Temperature measurement of swirling flames using near-infrared emission spectroscopy of H₂O

Gongxi Zhou, Fei Li, Xin Lin, Dongdong Meng, Xilong Yu

Proceedings Volume 12459, Sixth International Symposium on Laser Interaction with Matter; 124590X (2022) https://doi.org/10.1117/12.2655917
Event: Sixth International Symposium on Laser Interaction with Matter (LIMIS 2022), 2022, Ningbo, China

Abstract

Internal temperature monitoring of high speed propulsion system is of great significance for engine performance evaluation and life prediction. As a passive optical measurement method without external light source and flow field interference, emission spectrum measurement technology has a good application prospect in harsh measurement environment. As the main combustion product, high temperature water vapor has a high emission intensity in the near infrared band, which is very suitable for temperature measurement applications. The frequency band integral ratio is proposed to eliminate the high resolution measurement requirement of spectrum acquisition system, and the temperature distribution of swirl flame is measured successfully.

Citation Download Citation

Gongxi Zhou, Fei Li, Xin Lin, Dongdong Meng, and Xilong Yu "Temperature measurement of swirling flames using near-infrared emission spectroscopy of H₂O", Proc. SPIE 12459, Sixth International Symposium on Laser Interaction with Matter, 124590X (22 December 2022); https://doi.org/10.1117/12.2655917

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