{"id":1177,"date":"2012-06-06T10:25:36","date_gmt":"2012-06-06T08:25:36","guid":{"rendered":"http:\/\/greth.fr\/?p=1177"},"modified":"2023-02-23T17:25:14","modified_gmt":"2023-02-23T16:25:14","slug":"degivrage-des-pompes-a-chaleur-sur-lair-influence-de-la-mouillabilite-des-ailettes-dechangeurs-exterieurs-et-controle-des-flux-hydriques-lors-du-givrage-et-du-degivrage","status":"publish","type":"post","link":"https:\/\/greth.fr\/en\/degivrage-des-pompes-a-chaleur-sur-lair-influence-de-la-mouillabilite-des-ailettes-dechangeurs-exterieurs-et-controle-des-flux-hydriques-lors-du-givrage-et-du-degivrage\/","title":{"rendered":"D\u00e9givrage des pompes \u00e0 chaleur sur l\u2019air : influence de la mouillabilit\u00e9 des ailettes d\u2019\u00e9changeurs ext\u00e9rieurs et contr\u00f4le des flux hydriques lors du givrage et du d\u00e9givrage"},"content":{"rendered":"<p><strong><span style=\"text-decoration: underline;\">Summary :<\/span><\/strong><br \/>\nDans un contexte de limitation de la consommation en \u00e9nergie fossile et de d\u00e9veloppement durable, les pompes \u00e0 chaleur pr\u00e9sentent un int\u00e9r\u00eat majeur. Les obstacles rencontr\u00e9s, notamment le givrage compact, freinent leur utilisation. La mise en place de nouveaux mat\u00e9riaux, par exemple par des propri\u00e9t\u00e9s de mouillage particuli\u00e8res, est une voie innovante. L\u2019\u00e9tude des d\u00e9placements de gouttes et de ponts entre ailettes, par r\u00e9solution des \u00e9quations de Navier- Stokes, permet de comprendre localement les \u00e9coulements et de caract\u00e9riser l\u2019effet du mouillage (mod\u00e8le num\u00e9rique d\u2019angle de contact) et du confinement. Plusieurs \u00e9tudes ont \u00e9t\u00e9 men\u00e9es lors desquelles des comportements significatifs ont \u00e9t\u00e9 mis au jour et permettent de mettre en place des solutions efficaces pour les enjeux industriels.<\/p>\n<p>Une approche des ph\u00e9nom\u00e8nes de mouillage extr\u00eames (superhydrophobie) a \u00e9t\u00e9 r\u00e9alis\u00e9e et montre leur int\u00e9r\u00eat d\u2019un point de vue performance. En parall\u00e8le, une m\u00e9thode de changement d\u2019\u00e9tat a \u00e9t\u00e9 d\u00e9velopp\u00e9e dans le code de calculs scientifiques Th\u00e9tis pour pr\u00e9dire l\u2019\u00e9vacuation de la glace lors du d\u00e9givrage sur des g\u00e9om\u00e9tries simples. Cette approche originale bas\u00e9e sur la m\u00e9thode Volume Of Fluid, d\u00e9riv\u00e9e de m\u00e9thodes existantes en Front-Tracking, montre une faisabilit\u00e9 et une efficacit\u00e9 int\u00e9ressante.<\/p>\n<table width=\"100%\" border=\"1\">\n<tr>\n<td><strong>Auteur(s)<\/strong><\/td>\n<\/tr>\n<tr>\n<td>LEBOI J\u00e9r\u00e9my<\/td>\n<\/tr>\n<tr>\n<td><strong>Ann\u00e9e<\/strong><\/td>\n<\/tr>\n<tr>\n<td>2012<\/td>\n<\/tr>\n<tr>\n<td><strong>Keywords<\/strong><\/td>\n<\/tr>\n<tr>\n<td>Pompe \u00e0 chaleur, Mouillage, Superhydrophobie, Lissage, Ponts liquides, Changement de phase, Givrage<\/td>\n<\/tr>\n<\/table>\n\n&nbsp;<br \/>\n\n<div class=\"eds-animate edsanimate-sis-hidden\" data-eds-entry-animation=\"bounceIn\" data-eds-entry-delay=\"0\" data-eds-entry-duration=\"1\" data-eds-entry-timing=\"linear\" data-eds-exit-animation=\"\" data-eds-exit-delay=\"\" data-eds-exit-duration=\"\" data-eds-exit-timing=\"\" data-eds-repeat-count=\"1\" data-eds-keep=\"yes\" data-eds-animate-on=\"load\" data-eds-scroll-offset=\"\">\n\t\t<div class=\"box info\">\n\t\t\t<div class=\"box-inner-block\">\n\t\t\t\t<span class=\"fa tie-shortcode-boxicon\"><\/span>\n<p style=\"text-align: justify;\"><strong>&#x2666; The full version is only available for subscribers <a style=\"text-decoration: none;\" href=\"\/en\/offre-du-greth\/\"><span style=\"background-color: #3db2ea; color: #fff;\">\"ESSENTIEL\"<\/span><\/a> or <a style=\"text-decoration: none;\" href=\"\/en\/offre-du-greth\/\"><span style=\"background-color: #c6002c; color: #fff;\">\"PREMIUM\"<\/span><\/a> of GRETh!<\/strong><\/p>\n<p>&#x2666; If you are already a member \/ subscriber, you must identify yourself by <a href=\"\/wp-login.php\"><strong>clicking here<\/strong><\/a>.<br \/>\n&#x2666; If you are not a member, you can consult the offer proposed by GRETh by <a href=\"\/en\/offre-du-greth\/\"><strong>clicking here<\/strong><\/a> as well as the conditions of membership by <a href=\"\/en\/conditions-adhesion\/\"><strong>clicking here<\/strong><\/a>.\n\t\t\t<\/div>\n\t\t<\/div>\n\t<\/div>","protected":false},"excerpt":{"rendered":"<p>R\u00e9sum\u00e9 : Dans un contexte de limitation de la consommation en \u00e9nergie fossile et de d\u00e9veloppement durable, les pompes \u00e0 chaleur pr\u00e9sentent un int\u00e9r\u00eat majeur. Les obstacles rencontr\u00e9s, notamment le givrage compact, freinent leur utilisation. La mise en place de nouveaux mat\u00e9riaux, par exemple par des propri\u00e9t\u00e9s de mouillage particuli\u00e8res, est une voie innovante. L\u2019\u00e9tude &hellip;<\/p>","protected":false},"author":1,"featured_media":967,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[20,21],"tags":[],"class_list":["post-1177","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-documents","category-memoires-theses"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v23.9 (Yoast SEO v27.3) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>D\u00e9givrage des pompes \u00e0 chaleur sur l\u2019air : influence de la mouillabilit\u00e9 des ailettes d\u2019\u00e9changeurs ext\u00e9rieurs et contr\u00f4le des flux hydriques lors du givrage et du d\u00e9givrage - GRETh<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/greth.fr\/en\/degivrage-des-pompes-a-chaleur-sur-lair-influence-de-la-mouillabilite-des-ailettes-dechangeurs-exterieurs-et-controle-des-flux-hydriques-lors-du-givrage-et-du-degivrage\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"D\u00e9givrage des pompes \u00e0 chaleur sur l\u2019air : influence de la mouillabilit\u00e9 des ailettes d\u2019\u00e9changeurs ext\u00e9rieurs et contr\u00f4le des flux hydriques lors du givrage et du d\u00e9givrage\" \/>\n<meta property=\"og:description\" content=\"R\u00e9sum\u00e9 : Dans un contexte de limitation de la consommation en \u00e9nergie fossile et de d\u00e9veloppement durable, les pompes \u00e0 chaleur pr\u00e9sentent un int\u00e9r\u00eat majeur. Les obstacles rencontr\u00e9s, notamment le givrage compact, freinent leur utilisation. La mise en place de nouveaux mat\u00e9riaux, par exemple par des propri\u00e9t\u00e9s de mouillage particuli\u00e8res, est une voie innovante. 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