Impact of self-absorption on soot sizing by angular light scattering in a laminar axisymmetric diffusion flame - Normandie Université
Communication Dans Un Congrès Année : 2024

Impact of self-absorption on soot sizing by angular light scattering in a laminar axisymmetric diffusion flame

Mijail Littin
  • Fonction : Auteur
  • PersonId : 1238460
Guillaume Lefevre
  • Fonction : Auteur
  • PersonId : 1033268
Marek Mazur
  • Fonction : Auteur
  • PersonId : 178337
  • IdHAL : marek-mazur
Andrés Fuentes

Résumé

Experimental characterization of soot is recognized as essential for enhancing the understanding of aggregation and oxidation mechanisms occurring directly in flames. Laser Induced Incandescence and Line of Sight Attenuation provide information concerning soot volume fraction but only Angular Light Scattering can inform us of the aggregate size by an in-situ approach. Previous studies have shown the potential of coupling extinction, emission measured at different wavelengths [1] with angular light scattering [2]. Nevertheless, if the impact of trapping has already been investigated for emission measurements [3], it seems that effect has never been considered for angular light scattering. Therefore, the present study aims at improving the spatial resolution and the quality of the size and forward scattering coefficient determination by considering the trapping of the scattered light. This effect is suspected to be the cause of the observed dissymmetry of the scattered signals at certain heights above the burner. Its impact on the determination of aggregate size (gyration radius) and forward scattering coefficient is also evaluated.
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Dates et versions

hal-04629616 , version 1 (30-06-2024)

Identifiants

  • HAL Id : hal-04629616 , version 1

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Mijail Littin, Guillaume Lefevre, Marek Mazur, Andrés Fuentes, Jerôme Yon. Impact of self-absorption on soot sizing by angular light scattering in a laminar axisymmetric diffusion flame. Workshop LII, Kyle Daun, Jun 2024, Muskoka, Canada. ⟨hal-04629616⟩
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