Coherent anti-stokes Raman scattering thermometry applied to a supersonic combustor

Li-rong Zhang; Zhi-yun Hu; Jing-feng Ye; Zhen-rong Zhang; Sheng Wang; Jing-ru Liu

doi:10.1117/12.2011239

16 May 2013 Coherent anti-stokes Raman scattering thermometry applied to a supersonic combustor

Li-rong Zhang, Zhi-yun Hu, Jing-feng Ye, Zhen-rong Zhang, Sheng Wang, Jing-ru Liu

Author Affiliations +

Proceedings Volume 8796, 2nd International Symposium on Laser Interaction with Matter (LIMIS 2012); 87961F (2013) https://doi.org/10.1117/12.2011239
Event: 2nd International Symposium on Laser Interaction with Matter (LIMIS 2012), 2012, Xi'an, Shaanxi, China

Abstract

A mobile diagnostic system based on Unstable-resonator Spatially Enhanced Detection Coherent anti-Stokes Raman Scattering (USED CARS) geometry was established, which was used for temperature measurements in a model supersonic combustor. The temporal and spatial resolution of this mobile CARS system are 10ns and Ф0.1mm×5mm respectively. Single pulse nitrogen CARS spectrum with high signal to noise ratio(SNR) were obtained at the exhaust of model combustor through high stability optical design, and the temperatures were acquired by Levenberg-Marquarat fitting algorithm. The mean temperature of the unstable combustion is 1412K, and the mean temperature of the stable combustion is 1705K.

Citation Download Citation

Li-rong Zhang, Zhi-yun Hu, Jing-feng Ye, Zhen-rong Zhang, Sheng Wang, and Jing-ru Liu "Coherent anti-stokes Raman scattering thermometry applied to a supersonic combustor", Proc. SPIE 8796, 2nd International Symposium on Laser Interaction with Matter (LIMIS 2012), 87961F (16 May 2013); https://doi.org/10.1117/12.2011239

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