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Communication Dans Un Congrès Année : 2020

Temperature and radiation measurements of an atmospheric pressure CO2 plasma

Résumé

An atmospheric pressure CO2/Ar plasma is produced using an ICP torch. This plasma is passed at high velocity through a water-cooled test-section that forces rapid cooling and recombination. At the water-cooled test-section inlet, the plasma is close to Local Thermodynamic Equilibrium at about 6750 K. The subsequent thermochemical evolution of the plasma at it traverses the water-cooled tube is studied using Optical Emission Spectroscopy from the UV to NIR. The measured spectra, calibrated in absolute intensity, are compared with calculations done using the SPECAIR line-by-line radiation code. At the exit of the 15-cm water-cooled tube, the centerline temperature is found to have dropped to 6100 K. Indications of thermochemical non-equilibrium are found in the emission spectrum at the exit of the tube. The measurements presented here are meant to provide a test case for comparison with theoretical predictions made by kinetic models and/or CFD predictions.
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Dates et versions

hal-04558094 , version 1 (25-04-2024)

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Corentin H C Grimaldi, Sean Mcguire, Augustin Tibère-Inglesse, Christophe O Laux. Temperature and radiation measurements of an atmospheric pressure CO2 plasma. AIAA Scitech 2020 Forum, Jan 2020, Orlando, FL, United States. pp.1708, ⟨10.2514/6.2020-1708⟩. ⟨hal-04558094⟩
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