Finer strategies of spacecraft fire mitigation require more experimental data related to fire detection. Fire detection systems developed on Earth rely massively on the optical detection of soot particles, which are present in the smoke. To detect the fire correctly, it is thus important to know how the optical properties of these particles are affected in reduced gravity. With different transport processes and increased residence time, soot in reduced gravity can be different from those produced at normal gravity. As their optical properties are related to their morphological properties, a better understanding about the evolution of soot particle morphology in flames under microgravity conditions is required. Within this context, a novel technique of soot sampling using electric field is applied to a spreading non-premixed flame at normal and micro-gravity. The soot particles sampled are observed subsequently under Transmission Electron Microscopy (TEM). Density, soot particle projected area, radius of gyration, fractal dimension, and primary particle size are extracted and the influence of gravity is investigated with the evolution of these morphological properties within the flame. Though the present study cannot be conclusive in itself, the similarity between the evolution of the optical density measured throughout the flame just before the electric perturbation required by the sampling technique and the evolution of the amount of soot deposited due to the electric perturbation along the sampling plates supports the future works that need to be devoted to further assess the consistency of the technique.
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Yutao Li 1; Antoine Bordino 2; Augustin Guibaud 3; David Montero 4; Jean-Marie Citerne 1; Jean-Louis Consalvi 5; Jose Torero 3; Guillaume Legros 1, 6
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@article{CRMECA_2023__351_S2_19_0,
author = {Yutao Li and Antoine Bordino and Augustin Guibaud and David Montero and Jean-Marie Citerne and Jean-Louis Consalvi and Jose Torero and Guillaume Legros},
title = {Electric sampling of soot particles in spreading non-premixed flames: methodology and influence of gravity},
journal = {Comptes Rendus. M\'ecanique},
pages = {19--40},
publisher = {Acad\'emie des sciences, Paris},
volume = {351},
number = {S2},
year = {2023},
doi = {10.5802/crmeca.182},
language = {en},
}
TY - JOUR AU - Yutao Li AU - Antoine Bordino AU - Augustin Guibaud AU - David Montero AU - Jean-Marie Citerne AU - Jean-Louis Consalvi AU - Jose Torero AU - Guillaume Legros TI - Electric sampling of soot particles in spreading non-premixed flames: methodology and influence of gravity JO - Comptes Rendus. Mécanique PY - 2023 SP - 19 EP - 40 VL - 351 IS - S2 PB - Académie des sciences, Paris DO - 10.5802/crmeca.182 LA - en ID - CRMECA_2023__351_S2_19_0 ER -
%0 Journal Article %A Yutao Li %A Antoine Bordino %A Augustin Guibaud %A David Montero %A Jean-Marie Citerne %A Jean-Louis Consalvi %A Jose Torero %A Guillaume Legros %T Electric sampling of soot particles in spreading non-premixed flames: methodology and influence of gravity %J Comptes Rendus. Mécanique %D 2023 %P 19-40 %V 351 %N S2 %I Académie des sciences, Paris %R 10.5802/crmeca.182 %G en %F CRMECA_2023__351_S2_19_0
Yutao Li; Antoine Bordino; Augustin Guibaud; David Montero; Jean-Marie Citerne; Jean-Louis Consalvi; Jose Torero; Guillaume Legros. Electric sampling of soot particles in spreading non-premixed flames: methodology and influence of gravity. Comptes Rendus. Mécanique, Volume 351 (2023) no. S2, pp. 19-40. doi : 10.5802/crmeca.182. https://comptes-rendus.academie-sciences.fr/mecanique/articles/10.5802/crmeca.182/
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