{"id":46824,"date":"2019-11-01T22:23:07","date_gmt":"2019-11-01T21:23:07","guid":{"rendered":"https:\/\/www.thermal-engineering.org\/quel-est-le-regime-de-flux-definition\/"},"modified":"2019-11-01T22:23:07","modified_gmt":"2019-11-01T21:23:07","slug":"quel-est-le-regime-de-flux-definition","status":"publish","type":"post","link":"https:\/\/www.thermal-engineering.org\/fr\/quel-est-le-regime-de-flux-definition\/","title":{"rendered":"Quel est le r\u00e9gime de flux &#8211; D\u00e9finition"},"content":{"rendered":"<div class=\"su-quote su-quote-style-default\">\n<div class=\"su-quote-inner su-clearfix\"><span>D&#8217;un point de vue technique pratique, le r\u00e9gime d&#8217;\u00e9coulement peut \u00eatre class\u00e9 selon plusieurs crit\u00e8res.\u00a0Les r\u00e9gimes d&#8217;\u00e9coulement sont d\u00e9crits ici.\u00a0R\u00e9gime d&#8217;\u00e9coulement<\/span><\/div>\n<\/div>\n<div class=\"su-divider su-divider-style-dotted\"><\/div>\n<div class=\"lgc-column lgc-grid-parent lgc-grid-100 lgc-tablet-grid-100 lgc-mobile-grid-100 lgc-equal-heights  lgc-first lgc-last\">\n<div class=\"inside-grid-column\">\n<div class=\"su-spacer\"><\/div>\n<h2><span>R\u00e9gime d&#8217;\u00e9coulement<\/span><\/h2>\n<p><span>D&#8217;un point de vue technique pratique, le r\u00e9gime d&#8217;\u00e9coulement peut \u00eatre class\u00e9 selon\u00a0<\/span><strong><span>plusieurs crit\u00e8res<\/span><\/strong><span>\u00a0.<\/span><\/p>\n<p><strong><span>Tout \u00e9coulement de fluide<\/span><\/strong><span>\u00a0est class\u00e9 dans l&#8217;une des deux grandes cat\u00e9gories ou r\u00e9gimes.\u00a0Ces deux r\u00e9gimes de flux sont:<\/span><\/p>\n<ul>\n<li><strong><span>Flux de fluide monophas\u00e9<\/span><\/strong><\/li>\n<li><strong><span>Flux de fluide multiphase<\/span><\/strong><span>\u00a0(ou\u00a0<\/span><strong><span>flux de fluide biphas\u00e9<\/span><\/strong><span>\u00a0)<\/span><\/li>\n<\/ul>\n<p><span>Ceci est une\u00a0<\/span><strong><span>classification de base<\/span><\/strong><span>\u00a0.\u00a0Toutes les \u00e9quations d&#8217;\u00e9coulement de fluide (par exemple,\u00a0<\/span><a title=\"L'\u00e9quation de Bernoulli - Le principe de Bernoulli\" href=\"https:\/\/www.thermal-engineering.org\/fr\/quelle-est-lequation-de-bernoulli-principe-de-bernoulli-definition\/\"><strong><span>l&#8217;\u00e9quation de Bernoulli<\/span><\/strong><\/a><span>\u00a0) et les relations discut\u00e9es dans cette section (\u00a0<\/span><a title=\"Dynamique des fluides\" href=\"https:\/\/www.nuclear-power.com\/nuclear-engineering\/fluid-dynamics\/\"><span>Dynamique des fluides<\/span><\/a><span>\u00a0) ont \u00e9t\u00e9 d\u00e9riv\u00e9es pour l&#8217;\u00e9coulement d&#8217;une\u00a0<\/span><strong><span>seule phase<\/span><\/strong><span>\u00a0de fluide, liquide ou vapeur.\u00a0La solution d&#8217;un \u00e9coulement de fluide multiphase est\u00a0<\/span><strong><span>tr\u00e8s complexe et difficile<\/span><\/strong><span>\u00a0et, par cons\u00e9quent, se situe g\u00e9n\u00e9ralement dans les cours avanc\u00e9s de dynamique des fluides.<\/span><\/p>\n<p><a href=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/Flow-Regime.png\"><img loading=\"lazy\" class=\"alignright size-medium wp-image-14393 lazy-loaded\" src=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/Flow-Regime-300x175.png\" alt=\"r\u00e9gime d'\u00e9coulement\" width=\"300\" height=\"175\" data-lazy-type=\"image\" data-src=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/Flow-Regime-300x175.png\" \/><\/a><span>Une autre classification des\u00a0<\/span><strong><span>r\u00e9gimes d&#8217;\u00e9coulement,<\/span><\/strong><span>\u00a0g\u00e9n\u00e9ralement plus courante,\u00a0est la forme et le type des\u00a0<\/span><strong><span>lignes<\/span><\/strong><span>\u00a0de\u00a0<strong>courant<\/strong>\u00a0.\u00a0Tout \u00e9coulement de fluide est class\u00e9 dans l&#8217;une des deux grandes cat\u00e9gories.\u00a0Le flux de fluide peut \u00eatre laminaire ou turbulent. Ces deux cat\u00e9gories sont donc les suivantes:<\/span><\/p>\n<ul>\n<li><strong><span>\u00c9coulement laminaire<\/span><\/strong><\/li>\n<li><strong><span>\u00c9coulement turbulent<\/span><\/strong><\/li>\n<\/ul>\n<p><strong><span>\u00c9coulement laminaire<\/span><\/strong><span>\u00a0est caract\u00e9ris\u00e9 par\u00a0<\/span><strong><span>lisse<\/span><\/strong><span>\u00a0ou dans des\u00a0<\/span><strong><span>chemins r\u00e9guliers<\/span><\/strong><span>\u00a0de particules de fluide.\u00a0Par cons\u00e9quent, l&#8217;\u00e9coulement laminaire est \u00e9galement appel\u00e9\u00a0<\/span><strong><span>\u00e9coulement fluide ou visqueux<\/span><\/strong><span>\u00a0.\u00a0Contrairement \u00e0 l&#8217;\u00e9coulement laminaire, l&#8217;\u00e9coulement\u00a0<\/span><strong><span>turbulent<\/span><\/strong><span>\u00a0est caract\u00e9ris\u00e9 par le\u00a0<\/span><strong><span>mouvement irr\u00e9gulier<\/span><\/strong><span>\u00a0des particules du fluide.\u00a0Le fluide turbulent ne coule pas dans les couches parall\u00e8les, le m\u00e9lange lat\u00e9ral est tr\u00e8s \u00e9lev\u00e9 et il y a une rupture entre les couches.\u00a0<\/span><strong><span>La plupart des flux industriels<\/span><\/strong><span>\u00a0, notamment ceux du g\u00e9nie nucl\u00e9aire,\u00a0<\/span><strong><span>sont turbulents<\/span><\/strong><span>\u00a0.<\/span><\/p>\n<p><span>Le r\u00e9gime d&#8217;\u00e9coulement peut \u00e9galement \u00eatre class\u00e9 en fonction de la\u00a0<\/span><strong><span>g\u00e9om\u00e9trie d&#8217;un conduit<\/span><\/strong><span>\u00a0ou de la zone d&#8217;\u00e9coulement.\u00a0De ce point de vue, on distingue:<\/span><\/p>\n<ul>\n<li><strong><span>Flux interne<\/span><\/strong><\/li>\n<li><strong><span>Flux externe<\/span><\/strong><\/li>\n<\/ul>\n<p><strong><span>Le flux interne<\/span><\/strong><span>\u00a0est un flux pour lequel le fluide est confin\u00e9 par une surface.\u00a0Une connaissance d\u00e9taill\u00e9e du comportement des r\u00e9gimes d&#8217;\u00e9coulement interne est\u00a0<\/span><strong><span>importante en ing\u00e9nierie<\/span><\/strong><span>\u00a0, car les tuyaux circulaires peuvent supporter des pressions \u00e9lev\u00e9es et sont donc utilis\u00e9s pour transporter des liquides.\u00a0Par ailleurs, le\u00a0<\/span><strong><span>flux externe<\/span><\/strong><span>\u00a0est un flux dans lequel les couches limites se d\u00e9veloppent librement, sans contraintes impos\u00e9es par les surfaces adjacentes.\u00a0Une connaissance d\u00e9taill\u00e9e du comportement des\u00a0r\u00e9gimes d&#8217;\u00a0<\/span><strong><span>\u00e9coulement externe<\/span><\/strong><span>\u00a0est\u00a0<\/span><strong><span>importante, notamment en a\u00e9ronautique<\/span><\/strong><span>\u00a0et en\u00a0<\/span><strong><span>a\u00e9rodynamique<\/span><\/strong><span>\u00a0.<\/span><\/p>\n<\/div>\n<\/div>\n<div class=\"lgc-column lgc-grid-parent lgc-grid-100 lgc-tablet-grid-100 lgc-mobile-grid-100 lgc-equal-heights  lgc-first lgc-last\"><\/div>\n<div><\/div>\n<div><\/div>\n<div>\n<p>&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;.<\/p>\n<p>Cet article est bas\u00e9 sur la traduction automatique de l&#8217;article original en anglais. Pour plus d&#8217;informations, voir l&#8217;article en anglais. Pouvez vous nous aider Si vous souhaitez corriger la traduction, envoyez-la \u00e0 l&#8217;adresse: translations@nuclear-power.com ou remplissez le formulaire de traduction en ligne. Nous appr\u00e9cions votre aide, nous mettrons \u00e0 jour la traduction le plus rapidement possible. Merci<\/p>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>D&#8217;un point de vue technique pratique, le r\u00e9gime d&#8217;\u00e9coulement peut \u00eatre class\u00e9 selon plusieurs crit\u00e8res.\u00a0Les r\u00e9gimes d&#8217;\u00e9coulement sont d\u00e9crits ici.\u00a0R\u00e9gime d&#8217;\u00e9coulement R\u00e9gime d&#8217;\u00e9coulement D&#8217;un point de vue technique pratique, le r\u00e9gime d&#8217;\u00e9coulement peut \u00eatre class\u00e9 selon\u00a0plusieurs crit\u00e8res\u00a0. Tout \u00e9coulement de fluide\u00a0est class\u00e9 dans l&#8217;une des deux grandes cat\u00e9gories ou r\u00e9gimes.\u00a0Ces deux r\u00e9gimes de flux sont: &#8230; <a title=\"Quel est le r\u00e9gime de flux &#8211; D\u00e9finition\" class=\"read-more\" href=\"https:\/\/www.thermal-engineering.org\/fr\/quel-est-le-regime-de-flux-definition\/\" aria-label=\"En savoir plus sur Quel est le r\u00e9gime de flux &#8211; D\u00e9finition\">Lire la suite<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[8],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v15.4 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Quel est le r\u00e9gime de flux - D\u00e9finition<\/title>\n<meta name=\"description\" content=\"D&#039;un point de vue technique pratique, le r\u00e9gime d&#039;\u00e9coulement peut \u00eatre class\u00e9 selon plusieurs crit\u00e8res. 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