Beam optimization for tomographic absorption spectroscopy with given probe locations

Mingyuan Xin; Junling Song; Guangyu Wang; Wei Rao; Yanji Hong

doi:10.1117/12.2524499

29 March 2019 Beam optimization for tomographic absorption spectroscopy with given probe locations

Mingyuan Xin, Junling Song, Guangyu Wang, Wei Rao, Yanji Hong

Proceedings Volume 11046, Fifth International Symposium on Laser Interaction with Matter; 110462W (2019) https://doi.org/10.1117/12.2524499
Event: Fifth International Symposium on Laser Interaction with Matter, 2018, Changsha, China

Abstract

Tomographic absorption spectroscopy (TAS) is a promising combustion diagnosis technique. It can simultaneously provide 2D temperature and concentration of the flow field. Some engine combustors, such as scramjet combustors and internal-combustion engines, only allow limited optical access. Only a few beams (ca. 20-40) are available to measure the combustor and beam layout becomes a key factor affecting TAS accuracy. In engineering application, probes are embedded in the wall of the combustor for laser propagation. The probe size should be taken into account when designing beam layout. In this paper, we considered the probe locations into beam optimization. The math formulation of the problem and the solving algorithm (genetic simulated annealing algorithm) is developed.

Citation Download Citation

Mingyuan Xin, Junling Song, Guangyu Wang, Wei Rao, and Yanji Hong "Beam optimization for tomographic absorption spectroscopy with given probe locations", Proc. SPIE 11046, Fifth International Symposium on Laser Interaction with Matter, 110462W (29 March 2019); https://doi.org/10.1117/12.2524499

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