4D temperature measurements using tomographic two-color pyrometry

Yu T, Bauer F, Huber F, Will S, Cai W (2021)

Publication Language: English

Publication Type: Journal article, Review article

Publication year: 2021


Book Volume: 29

Pages Range: 5304-5315

Journal Issue: 4

DOI: 10.1364/OE.412821


This work presents a new approach for high-speed four-dimensional (3D+t) thermometry using only two high-speed cameras which are equipped with different band pass filters to capture thermal radiation signals at two narrow wavelength bands. With the help of a customized fiber bundle and a beam splitter, a total number of nine projections at each band were recorded, and the temperature distribution was evaluated by tomographic two-color pyrometry. In order to validate the effectiveness of this method, the 3D temperature distribution of a premixed steady flat flame was evaluated. The determined temperatures were compared to those of other studies, as well as to the results from inverse Abel transform and line-of-sight data. Further, the 3D temperature evolution of a weakly turbulent diffusion flame was observed at a repetition rate of 7.5 kHz. Such 4D temperature measurements are expected to be valuable in understanding turbulent combustion mechanisms especially of practical devices.

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Yu, T., Bauer, F., Huber, F., Will, S., & Cai, W. (2021). 4D temperature measurements using tomographic two-color pyrometry. Optics Express, 29(4), 5304-5315. https://doi.org/10.1364/OE.412821


Yu, Tao, et al. "4D temperature measurements using tomographic two-color pyrometry." Optics Express 29.4 (2021): 5304-5315.

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