Computation of the conducto-radiative effective heat conductivity of porous media defined by Triply Periodic Minimal Surfaces
| dc.rights.license | open | en_US |
| hal.structure.identifier | Laboratoire des Composites Thermostructuraux [LCTS] | |
| dc.contributor.author | VIGNOLES, Gerard L. | |
| hal.structure.identifier | CEA Le Ripault [CEA Le Ripault] | |
| dc.contributor.author | ROCHAIS, Denis | |
| hal.structure.identifier | CEA Le Ripault [CEA Le Ripault] | |
| hal.structure.identifier | Laboratoire d'Energétique et Mécanique Théorique et Appliquée [LEMTA ] | |
| dc.contributor.author | CHUPIN, Sylvain | |
| dc.date.accessioned | 2021-06-23T08:20:35Z | |
| dc.date.available | 2021-06-23T08:20:35Z | |
| dc.date.issued | 2021-01-01 | |
| dc.identifier.issn | 1290-0729 | en_US |
| dc.identifier.uri | oai:crossref.org:10.1016/j.ijthermalsci.2020.106598 | |
| dc.identifier.uri | https://oskar-bordeaux.fr/handle/20.500.12278/79256 | |
| dc.description.abstractEn | Triply Periodic Minimal Surfaces are attractive porous media for the design of volumetric solar energy receivers; their design involves the evaluation of their heat transfer capabilities in the mixed conductive/radiative mode. We present image-based computations of effective thermal conductivities (ETC) for different radiation/conduction ratios in twenty distinct TPMS structures, using a Hybrid Random Walk numerical method, considering Opaque/Transparent media. Results are cast in simple analytical correlations : the ETC is the sum of a purely conductive contribution proportional to the relative density and of a radiative contribution proportional to the radiation/conduction ratio; the coefficient of proportionality contains an emissivity-independent contribution and another contribution proportional to the emissivity which fades out above a critical ratio. This critical ratio is linearly proportional to the solid/void volume ratio of the media. These results are compared to similar ones obtained on open-cell foams. Application of these dimensionless laws to two realistic cases are presented as illustrative examples. | |
| dc.language.iso | EN | en_US |
| dc.source | crossref | |
| dc.subject.en | TPMS | |
| dc.subject.en | Coupled heat transfer | |
| dc.subject.en | Radiation | |
| dc.subject.en | Effective conductivity | |
| dc.subject.en | Image-based modelling | |
| dc.title.en | Computation of the conducto-radiative effective heat conductivity of porous media defined by Triply Periodic Minimal Surfaces | |
| dc.type | Article de revue | en_US |
| dc.identifier.doi | 10.1016/j.ijthermalsci.2020.106598 | en_US |
| dc.subject.hal | Chimie/Matériaux | en_US |
| bordeaux.journal | International Journal of Thermal Sciences | en_US |
| bordeaux.page | 106598 | en_US |
| bordeaux.volume | 159 | en_US |
| bordeaux.hal.laboratories | Laboratoire des Composites Thermo Structuraux (LCTS) - UMR 5801 | en_US |
| bordeaux.institution | Université de Bordeaux | en_US |
| bordeaux.institution | CNRS | en_US |
| bordeaux.institution | CEA | en_US |
| bordeaux.peerReviewed | oui | en_US |
| bordeaux.inpress | non | en_US |
| bordeaux.import.source | dissemin | |
| hal.export | false | |
| workflow.import.source | dissemin | |
| bordeaux.COinS | ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=International%20Journal%20of%20Thermal%20Sciences&rft.date=2021-01-01&rft.volume=159&rft.spage=106598&rft.epage=106598&rft.eissn=1290-0729&rft.issn=1290-0729&rft.au=VIGNOLES,%20Gerard%20L.&ROCHAIS,%20Denis&CHUPIN,%20Sylvain&rft.genre=article |
Fichier(s) constituant ce document
| Fichiers | Taille | Format | Vue |
|---|---|---|---|
|
Il n'y a pas de fichiers associés à ce document. |
|||