{"id":46796,"date":"2019-11-01T10:38:48","date_gmt":"2019-11-01T09:38:48","guid":{"rendered":"https:\/\/www.thermal-engineering.org\/quest-ce-que-la-force-sur-un-coude-deflecteur-definition\/"},"modified":"2020-03-03T08:47:04","modified_gmt":"2020-03-03T07:47:04","slug":"quest-ce-que-la-force-sur-un-coude-deflecteur-definition","status":"publish","type":"post","link":"https:\/\/www.thermal-engineering.org\/fr\/quest-ce-que-la-force-sur-un-coude-deflecteur-definition\/","title":{"rendered":"Qu&#8217;est-ce que la force sur un coude d\u00e9flecteur &#8211; D\u00e9finition"},"content":{"rendered":"<div class=\"su-quote su-quote-style-default\">\n<div class=\"su-quote-inner su-clearfix\">Un coude (disons de la tuyauterie principale) est utilis\u00e9 pour d\u00e9vier le d\u00e9bit d&#8217;eau \u00e0 une vitesse de 17 m \/ s.\u00a0Calculez la force exerc\u00e9e sur le mur du coude du d\u00e9flecteur.\u00a0G\u00e9nie thermique<\/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>Exemple: la force agissant sur un coude de d\u00e9flecteur<\/h2>\n<p><a href=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/Momentum-equation-control-volume.png\"><img loading=\"lazy\" class=\"alignright size-medium wp-image-14368 lazy-loaded\" src=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/Momentum-equation-control-volume-300x255.png\" alt=\"Equation Momentum - volume de contr\u00f4le\" width=\"300\" height=\"255\" data-lazy-type=\"image\" data-src=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/Momentum-equation-control-volume-300x255.png\" \/><\/a><strong>Un coude<\/strong>\u00a0(disons de la tuyauterie principale) est utilis\u00e9 pour d\u00e9vier le d\u00e9bit d&#8217;eau \u00e0 une vitesse de\u00a0<strong>17 m \/ s<\/strong>\u00a0.\u00a0Le diam\u00e8tre de la tuyauterie est \u00e9gal \u00e0\u00a0<strong>700 mm<\/strong>\u00a0.\u00a0La pression manom\u00e9trique \u00e0 l&#8217;int\u00e9rieur du tuyau est d&#8217;environ\u00a0<strong>16 MPa<\/strong>\u00a0\u00e0 une temp\u00e9rature de 290 \u00b0 C.\u00a0Le fluide a une densit\u00e9 constante\u00a0<strong>\u2374 ~ 720 kg \/ m\u00a0<sup>3<\/sup><\/strong>\u00a0(\u00e0 290 \u00b0 C).\u00a0L&#8217;angle du coude est de\u00a0<strong>45 \u00b0<\/strong>\u00a0.<\/p>\n<p>Calculez la\u00a0<strong>force exerc\u00e9e sur le mur<\/strong>\u00a0du coude du d\u00e9flecteur (c.-\u00e0-d. Calculez le vecteur F\u00a0<sub>3<\/sub>\u00a0).<\/p>\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<p><strong><span>Hypoth\u00e8ses:<\/span><\/strong><\/p>\n<ul>\n<li><span>Le d\u00e9bit est r\u00e9gulier.<\/span><\/li>\n<li><span>Les pertes par friction sont n\u00e9gligeables.<\/span><\/li>\n<li><span>Le poids du coude est n\u00e9gligeable.<\/span><\/li>\n<li><span>Le poids de l&#8217;eau dans le coude est n\u00e9gligeable.<\/span><\/li>\n<\/ul>\n<p><span>Nous prenons le coude comme\u00a0<\/span><strong><span>volume de contr\u00f4le<\/span><\/strong><span>\u00a0.\u00a0Le volume de contr\u00f4le est indiqu\u00e9 sur l&#8217;image.\u00a0L&#8217;\u00e9quation de quantit\u00e9 de mouvement est une \u00e9quation vectorielle, elle a donc trois composantes.\u00a0Nous prenons les coordonn\u00e9es x et z comme indiqu\u00e9 et nous r\u00e9soudrons le probl\u00e8me s\u00e9par\u00e9ment en fonction de ces coordonn\u00e9es.<\/span><\/p>\n<p><span>Tout d&#8217;abord, consid\u00e9rons le composant dans la\u00a0<\/span><strong><span>coordonn\u00e9e x<\/span><\/strong><span>\u00a0.\u00a0La conservation de l&#8217;\u00e9quation du moment lin\u00e9aire devient:<\/span><\/p>\n<p><a href=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/Momentum-equation-x-coordinate.png\"><img loading=\"lazy\" class=\"size-full wp-image-14367 alignleft lazy-loaded\" src=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/Momentum-equation-x-coordinate.png\" alt=\"\u00c9quation de momentum - coordonn\u00e9e x\" width=\"603\" height=\"371\" data-lazy-type=\"image\" data-src=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/Momentum-equation-x-coordinate.png\" \/><\/a><\/p>\n<p><span>Deuxi\u00e8mement, consid\u00e9rons le composant dans la\u00a0<\/span><strong><span>coordonn\u00e9e y<\/span><\/strong><span>\u00a0.\u00a0La conservation de l&#8217;\u00e9quation du moment lin\u00e9aire devient:<\/span><\/p>\n<p><a href=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/Momentum-equation-y-coordinate.png\"><img loading=\"lazy\" class=\"size-full wp-image-14365 alignleft lazy-loaded\" src=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/Momentum-equation-y-coordinate.png\" alt=\"\u00c9quation de momentum - coordonn\u00e9e y\" width=\"566\" height=\"383\" data-lazy-type=\"image\" data-src=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/Momentum-equation-y-coordinate.png\" \/><\/a><\/p>\n<p><span>La force finale agissant sur la paroi d&#8217;un coude d\u00e9flecteur sera:<\/span><\/p>\n<p><a href=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/Momentum-equation-resulting-force.png\"><img loading=\"lazy\" class=\"size-full wp-image-14366 alignleft lazy-loaded\" src=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/Momentum-equation-resulting-force.png\" alt=\"\u00c9quation de momentum - force r\u00e9sultante\" width=\"294\" height=\"51\" data-lazy-type=\"image\" data-src=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/Momentum-equation-resulting-force.png\" \/><\/a><\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<div class=\"inside-grid-column\"><\/div>\n<div><\/div>\n<div><\/div>\n<div><\/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","protected":false},"excerpt":{"rendered":"<p>Un coude (disons de la tuyauterie principale) est utilis\u00e9 pour d\u00e9vier le d\u00e9bit d&#8217;eau \u00e0 une vitesse de 17 m \/ s.\u00a0Calculez la force exerc\u00e9e sur le mur du coude du d\u00e9flecteur.\u00a0G\u00e9nie thermique Exemple: la force agissant sur un coude de d\u00e9flecteur Un coude\u00a0(disons de la tuyauterie principale) est utilis\u00e9 pour d\u00e9vier le d\u00e9bit d&#8217;eau &#8230; <a title=\"Qu&#8217;est-ce que la force sur un coude d\u00e9flecteur &#8211; D\u00e9finition\" class=\"read-more\" href=\"https:\/\/www.thermal-engineering.org\/fr\/quest-ce-que-la-force-sur-un-coude-deflecteur-definition\/\" aria-label=\"En savoir plus sur Qu&#8217;est-ce que la force sur un coude d\u00e9flecteur &#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>Qu&#039;est-ce que la force sur un coude d\u00e9flecteur - D\u00e9finition<\/title>\n<meta name=\"description\" content=\"Un coude (disons de la tuyauterie principale) est utilis\u00e9 pour d\u00e9vier le d\u00e9bit d&#039;eau \u00e0 une vitesse de 17 m \/ s. 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