Instantaneous surface temperature measurements in combustion by an adapted processing of the Laser Induced Phosphorescence signal - Laboratoire d'Énergétique Moléculaire et Macroscopique, Combustion Accéder directement au contenu
Communication Dans Un Congrès Année : 2021

Instantaneous surface temperature measurements in combustion by an adapted processing of the Laser Induced Phosphorescence signal

Résumé

This paper proposes a new approach of the Laser Induced Phosphorescence (LIP) signal for instantaneous surface temperature measurements: the "full spectrum fitting" method. LIP is a semi-invasive optical diagnostic based on coated thermographic phosphor surfaces, emitting a temperature-dependent signal under laser irradiation. Thousands of Mg3.5FGeO5:Mn phosphorescence spectra are acquired to build a database at each kelvin in a temperature range from 100 K to 900 K with a unique set of experimental acquisition parameters. The constituted database is used to retrieve a single-shot temperature measurement using a least mean square method. A statistical study on 70,000 single-shots acquisitions shows good precision and low uncertainties with this method.
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Dates et versions

hal-03603204 , version 1 (09-03-2022)

Identifiants

  • HAL Id : hal-03603204 , version 1

Citer

Valentin Lechner, Christopher Betrancourt, Clément Mirat, Philippe Scouflaire, Sébastien Ducruix. Instantaneous surface temperature measurements in combustion by an adapted processing of the Laser Induced Phosphorescence signal. 10th European Combustion Meeting (2021), Apr 2021, Naples, virtual edition, France. ⟨hal-03603204⟩
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