POËTTE, Gaël; DE LA VAUVRE, Augustin; VIGNOLES, Gerard

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POËTTE, Gaël
Centre d'études scientifiques et techniques d'Aquitaine (CESTA-CEA) [CESTA]

DE LA VAUVRE, Augustin
IFP Energies nouvelles [IFPEN]

VIGNOLES, Gerard

Laboratoire des Composites Thermostructuraux [LCTS]

Langue

Document de travail - Pré-publication

Résumé en anglais

In this paper, we tackle the problem of solving the system of radiative heat transfer coupled with thediffusion equation for material temperature with a full Monte-Carlo (MC) scheme in heterogeneousmedia, i.e. possibly containing discontinuities of thermophysical material parameters. MC schemesbased on Brownian paths for the diffusion equation in layered media are known to present someissues: corrections at the interface between media are usually mandatory or must be replaced withcomplex samplings. In this paper, based on the observations that transport models are easily solvedby MC methods in layered media, and that state-of-the-art MC schemes capture the diffusion limit,we suggest to build a phonon like model and to solve it with an MC scheme. For capturing thediffusion limit, physical constraints are explicited and enforced within the MC resolution. Theseconstraints can even help revisiting the Brownian paths for efficient corrections. Numerical resultsare provided in different regimes in order to highlight the relevance of the strategies suggested inthis paper.< Réduire

Mots clés en anglais

Radiative transfer Diffusion Monte Carlo Numerical scheme layered media stratified media

Radiative transfer

Diffusion

Monte Carlo

Numerical scheme

layered media

stratified media

URI

https://oskar-bordeaux.fr/handle/20.500.12278/206036

Unités de recherche

Laboratoire des Composites Thermo Structuraux (LCTS) - UMR 5801