Impact of the meso-texture on the exctinction behaviour of architected porous ceramics: from spatial correlation characterizations up to (non) beerian radiative behaviour evaluation - Archive ouverte HAL Accéder directement au contenu
Communication Dans Un Congrès Année : 2023

Impact of the meso-texture on the exctinction behaviour of architected porous ceramics: from spatial correlation characterizations up to (non) beerian radiative behaviour evaluation

Résumé

So far the firm link between the spatial arrangement of consolidated porous ceramics and their ability to attenuate the thermal radiation along its direction of propagation remains a topic of debate. This is particularly true for architected ceramics with regular topologies, obtained by additive manufacturing. To cope with this issue, numerical 3D geometries with different arrangement of cells (regular and irregular) will be generated with genMat an homemade software. Then, the two-point correlation functions of each architecture will be computed to precise the type of spatial correlations prevailing in the medium. The analysis of the extinction cumulative distribution function curves obtained with the Radiative Distribution Function Identification method allows us to check whether or not if the attenuated thermal radiation follows an exponential decay as it the case for Beerian media. Effect of the cell size, cell numbers and cell geometries will be discussed. Finally, preliminar practical considerations will be given for making the distinction between Beerian and non Beerian 3D architectures.
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hal-04309267 , version 1 (27-11-2023)

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  • HAL Id : hal-04309267 , version 1

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Benoit Rousseau, Y. Favennec, Jérôme Vicente, Franck Enguehard. Impact of the meso-texture on the exctinction behaviour of architected porous ceramics: from spatial correlation characterizations up to (non) beerian radiative behaviour evaluation. 17th International Heat Transfer Conference, Aug 2023, Cape Town, South Africa. ⟨hal-04309267⟩
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