{"id":1404,"date":"2022-10-07T16:41:47","date_gmt":"2022-10-07T14:41:47","guid":{"rendered":"http:\/\/project.inria.fr\/rencontresljll\/?p=1404"},"modified":"2022-11-09T11:29:59","modified_gmt":"2022-11-09T10:29:59","slug":"monday-21st-november-2022-inria-mireille-bossy-inria-sophia-antipolis","status":"publish","type":"post","link":"https:\/\/project.inria.fr\/rencontresljll\/fr\/monday-21st-november-2022-inria-mireille-bossy-inria-sophia-antipolis\/","title":{"rendered":"<font color=\"red\"><strong>Lundi 21 novembre 2022 &#8211; INRIA  <\/strong>  <\/font><br> <strong> Mireille Bossy    <\/strong>  INRIA Sophia Antipolis <\/strong>"},"content":{"rendered":"<p>Titre : Approche stochastique pour la r\u00e9duction de mod\u00e8le en m\u00e9canique des fluides num\u00e9riques. Application aux s\u00e9ries temporelles de vent.<\/p>\n<p>R\u00e9sum\u00e9 : Dans cette pr\u00e9sentation j&rsquo;introduirai la m\u00e9thode de particule fluide pour la CFD turbulente. Ce mod\u00e8le physique est lagrangien et stochastique. De ces deux particularit\u00e9s, nous tirons profit pour construire, \u00e0 partir des \u00e9quations 3D+temps, un mod\u00e8le 0D+temps pour la s\u00e9rie temporelle de la variabilit\u00e9 locale du vent mesur\u00e9. Je donnerai quelques r\u00e9sultats sur la calibration du mod\u00e8le qui restitue d&rsquo;une certaine mani\u00e8re l&rsquo;incertitude sur la param\u00e9trisation physique de l\u2019\u00e9quation 3D de d\u00e9part. Comme exemple d&rsquo;application, je montrerai son utilisation pour la pr\u00e9diction court terme de la \u00ab\u00a0variance du vent\u00a0\u00bb. Enfin je donnerai quelques \u00e9l\u00e9ments d&rsquo;analyse des \u00e9quations stochastiques que nous obtenons et pour lesquels nous \u00e9tudions la convergence de sch\u00e9mas (n\u00e9cessaire \u00e0 la calibration) ainsi que les propri\u00e9t\u00e9s de stabilit\u00e9 pour les solutions exacte et approch\u00e9e.<\/p>","protected":false},"excerpt":{"rendered":"<p>Titre : Approche stochastique pour la r\u00e9duction de mod\u00e8le en m\u00e9canique des fluides num\u00e9riques. Application aux s\u00e9ries temporelles de vent. R\u00e9sum\u00e9 : Dans cette pr\u00e9sentation j&rsquo;introduirai la m\u00e9thode de particule fluide pour la CFD turbulente. Ce mod\u00e8le physique est lagrangien et stochastique. De ces deux particularit\u00e9s, nous tirons profit pour\u2026<\/p>\n<p> <a class=\"continue-reading-link\" href=\"https:\/\/project.inria.fr\/rencontresljll\/fr\/monday-21st-november-2022-inria-mireille-bossy-inria-sophia-antipolis\/\"><span>plus<\/span><i class=\"crycon-right-dir\"><\/i><\/a> <\/p>\n","protected":false},"author":2244,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[16],"tags":[],"class_list":["post-1404","post","type-post","status-publish","format-standard","hentry","category-seminaire-2022-2023"],"_links":{"self":[{"href":"https:\/\/project.inria.fr\/rencontresljll\/fr\/wp-json\/wp\/v2\/posts\/1404","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/project.inria.fr\/rencontresljll\/fr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/project.inria.fr\/rencontresljll\/fr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/project.inria.fr\/rencontresljll\/fr\/wp-json\/wp\/v2\/users\/2244"}],"replies":[{"embeddable":true,"href":"https:\/\/project.inria.fr\/rencontresljll\/fr\/wp-json\/wp\/v2\/comments?post=1404"}],"version-history":[{"count":5,"href":"https:\/\/project.inria.fr\/rencontresljll\/fr\/wp-json\/wp\/v2\/posts\/1404\/revisions"}],"predecessor-version":[{"id":1436,"href":"https:\/\/project.inria.fr\/rencontresljll\/fr\/wp-json\/wp\/v2\/posts\/1404\/revisions\/1436"}],"wp:attachment":[{"href":"https:\/\/project.inria.fr\/rencontresljll\/fr\/wp-json\/wp\/v2\/media?parent=1404"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/project.inria.fr\/rencontresljll\/fr\/wp-json\/wp\/v2\/categories?post=1404"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/project.inria.fr\/rencontresljll\/fr\/wp-json\/wp\/v2\/tags?post=1404"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}