A tomographic technique for the simultaneous imaging of temperature, chemical species, and pressure in reactive flows using absorption spectroscopy with frequency-agile lasers
Applied Physics Letters
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Cai, W., & Kaminski, C. (2014). A tomographic technique for the simultaneous imaging of temperature, chemical species, and pressure in reactive flows using absorption spectroscopy with frequency-agile lasers. Applied Physics Letters, 104 https://doi.org/10.1063/1.4862754
This paper proposes a technique that can simultaneously retrieve distributions of temperature, concentration of chemical species, and pressure based on broad bandwidth, frequency-agile tomographic absorption spectroscopy. The technique holds particular promise for the study of dynamic combusting flows. A proof-of-concept numerical demonstration is presented, using representative phantoms to model conditions typically prevailing in near-atmospheric or high pressure flames. The simulations reveal both the feasibility of the proposed technique and its robustness. Our calculations indicate precisions of ∼70 K at flame temperatures and ∼0.05 bars at high pressure from reconstructions featuring as much as 5% Gaussian noise in the projections.
This work was supported by the Seventh Framework Program (Grant Agreement No. PIIF-GA-2012-330840) of the European Union and was performed using the Darwin Supercomputer of the University of Cambridge High Performance Computing Service.
External DOI: https://doi.org/10.1063/1.4862754
This record's URL: https://www.repository.cam.ac.uk/handle/1810/245121