[Effets de la mouillabilité sur l'ébullition en vase]
Cette étude a pour objectif d'étudier les effets de la mouillabilité sur l'ébullition en vase. L'angle de contact du fluide a été modifié par revêtement de nanoparticules sur des surfaces de test. Les résultats expérimentaux obtenus ne sont pas en accord avec les modèles classiques. Une nouvelle approche physique de l'influence de la mouillabilité sur l'ébullition en vase a été établie. Dans cette approche, nous introduisons les notions des macro- et micro-angles de contact afin d'expliquer les phénomènes observés.
Although the boiling process has been a major subject of research for several decades, its physics still remain unclear and require further investigation. This study aims at highlighting the effects of surface wettability on pool boiling heat transfer. Nanocoating techniques were used to vary the water contact angle from 20° to 110° by modifying nanoscale surface topography and chemistry. The experimental results obtained disagree with the predictions of the classical models. A new approach of nucleation mechanism is established to clarify the nexus between the surface wettability and the nucleate boiling heat transfer. In this approach, we introduce the concept of macro- and micro-contact angles to explain the observed phenomenon.
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Mots-clés : Transferts thermiques, Mouillabilité, Ébullition, Angle de contact, Revêtement nanostructuré
Hai Trieu Phan 1, 2 ; Nadia Caney 2 ; Philippe Marty 2 ; Stéphane Colasson 1 ; Jérôme Gavillet 3
@article{CRMECA_2009__337_5_251_0,
author = {Hai Trieu Phan and Nadia Caney and Philippe Marty and St\'ephane Colasson and J\'er\^ome Gavillet},
title = {How does surface wettability influence nucleate boiling?},
journal = {Comptes Rendus. M\'ecanique},
pages = {251--259},
publisher = {Elsevier},
volume = {337},
number = {5},
year = {2009},
doi = {10.1016/j.crme.2009.06.032},
language = {en},
}
TY - JOUR AU - Hai Trieu Phan AU - Nadia Caney AU - Philippe Marty AU - Stéphane Colasson AU - Jérôme Gavillet TI - How does surface wettability influence nucleate boiling? JO - Comptes Rendus. Mécanique PY - 2009 SP - 251 EP - 259 VL - 337 IS - 5 PB - Elsevier DO - 10.1016/j.crme.2009.06.032 LA - en ID - CRMECA_2009__337_5_251_0 ER -
%0 Journal Article %A Hai Trieu Phan %A Nadia Caney %A Philippe Marty %A Stéphane Colasson %A Jérôme Gavillet %T How does surface wettability influence nucleate boiling? %J Comptes Rendus. Mécanique %D 2009 %P 251-259 %V 337 %N 5 %I Elsevier %R 10.1016/j.crme.2009.06.032 %G en %F CRMECA_2009__337_5_251_0
Hai Trieu Phan; Nadia Caney; Philippe Marty; Stéphane Colasson; Jérôme Gavillet. How does surface wettability influence nucleate boiling?. Comptes Rendus. Mécanique, Volume 337 (2009) no. 5, pp. 251-259. doi : 10.1016/j.crme.2009.06.032. https://comptes-rendus.academie-sciences.fr/mecanique/articles/10.1016/j.crme.2009.06.032/
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