{"id":49101,"date":"2019-11-14T14:12:00","date_gmt":"2019-11-14T13:12:00","guid":{"rendered":"https:\/\/www.thermal-engineering.org\/o-que-e-o-perfil-de-velocidade-da-lei-de-potencia-fluxo-turbulento-definicao\/"},"modified":"2020-02-01T20:10:24","modified_gmt":"2020-02-01T19:10:24","slug":"o-que-e-o-perfil-de-velocidade-da-lei-de-potencia-fluxo-turbulento-definicao","status":"publish","type":"post","link":"https:\/\/www.thermal-engineering.org\/pt-br\/o-que-e-o-perfil-de-velocidade-da-lei-de-potencia-fluxo-turbulento-definicao\/","title":{"rendered":"O que \u00e9 o perfil de velocidade da lei de pot\u00eancia &#8211; Fluxo turbulento &#8211; Defini\u00e7\u00e3o"},"content":{"rendered":"<div class=\"su-quote su-quote-style-default\">\n<div class=\"su-quote-inner su-clearfix\">O perfil de velocidade no fluxo turbulento \u00e9 mais plano na parte central do tubo.\u00a0O mais simples e mais conhecido \u00e9 o perfil de velocidade da lei de pot\u00eancia.\u00a0Engenharia T\u00e9rmica<\/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>Perfil de velocidade turbulenta<\/h2>\n<figure id=\"attachment_14420\" class=\"wp-caption aligncenter\" aria-describedby=\"caption-attachment-14420\"><a href=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/velocity-profiles-internal-flow.png\"><img loading=\"lazy\" class=\"size-full wp-image-14420 lazy-loaded\" src=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/velocity-profiles-internal-flow.png\" alt=\"perfis de velocidade - fluxo interno\" width=\"546\" height=\"439\" data-lazy-type=\"image\" data-src=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/velocity-profiles-internal-flow.png\" \/><\/a><figcaption id=\"caption-attachment-14420\" class=\"wp-caption-text\">Fonte: Departamento de Energia dos EUA, TERMODIN\u00c2MICA, TRANSFER\u00caNCIA DE CALOR E FLUXO DE FLUIDO.\u00a0Manual de Fundamentos do DOE, Volume 1, 2 e 3. Junho de 1992.<\/figcaption><\/figure>\n<h2>Perfil de velocidade da lei de pot\u00eancia &#8211; Perfil de velocidade turbulenta<\/h2>\n<p><a href=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/Power-law-velocity-profile.png\"><img loading=\"lazy\" class=\"alignright size-medium wp-image-14475 lazy-loaded\" src=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/Power-law-velocity-profile-300x171.png\" alt=\"Perfil de velocidade da lei de pot\u00eancia\" width=\"300\" height=\"171\" data-lazy-type=\"image\" data-src=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/Power-law-velocity-profile-300x171.png\" \/><\/a>O perfil de velocidade no\u00a0<a title=\"Fluxo turbulento\" href=\"https:\/\/www.thermal-engineering.org\/pt-br\/o-que-e-fluxo-turbulento-definicao\/\"><strong>fluxo turbulento<\/strong><\/a>\u00a0\u00e9 mais plano na parte central do tubo (isto \u00e9, no n\u00facleo turbulento) do que no\u00a0<a title=\"Fluxo Laminar - Fluxo Viscoso\" href=\"https:\/\/www.thermal-engineering.org\/pt-br\/o-que-e-fluxo-laminar-fluxo-viscoso-definicao\/\"><strong>fluxo laminar<\/strong><\/a>\u00a0.\u00a0A velocidade do fluxo cai rapidamente extremamente perto das paredes.\u00a0Isto \u00e9 devido \u00e0 difusividade do fluxo turbulento.<\/p>\n<p>No caso de fluxo de tubula\u00e7\u00e3o turbulento, existem muitos perfis de velocidade emp\u00edricos.\u00a0O mais simples e mais conhecido \u00e9 o\u00a0<strong>perfil de velocidade da lei de pot\u00eancia<\/strong>\u00a0:<\/p>\n<p><a href=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/Power-law-velocity-profile-equation.png\"><img loading=\"lazy\" class=\"aligncenter size-full wp-image-14474 lazy-loaded\" src=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/Power-law-velocity-profile-equation.png\" alt=\"Perfil da velocidade da lei de pot\u00eancia - equa\u00e7\u00e3o\" width=\"421\" height=\"65\" data-lazy-type=\"image\" data-src=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/Power-law-velocity-profile-equation.png\" \/><\/a><\/p>\n<p>onde o expoente n \u00e9 uma constante cujo valor depende do\u00a0<a title=\"N\u00famero de Reynolds\" href=\"https:\/\/www.nuclear-power.com\/nuclear-engineering\/fluid-dynamics\/reynolds-number\/\"><strong>n\u00famero de Reynolds<\/strong><\/a>\u00a0.\u00a0Essa depend\u00eancia \u00e9 emp\u00edrica e \u00e9 mostrada na figura.\u00a0Em resumo, o valor n aumenta com o aumento do n\u00famero de Reynolds.\u00a0<strong>O s\u00e9timo perfil de velocidade da lei da pot\u00eancia<\/strong>\u00a0aproxima muitos fluxos industriais.<\/p>\n<figure id=\"attachment_14476\" class=\"wp-caption aligncenter\" aria-describedby=\"caption-attachment-14476\"><a href=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/Turbulent-flow-profiles.png\"><img loading=\"lazy\" class=\"wp-image-14476 lazy-loaded\" src=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/Turbulent-flow-profiles.png\" alt=\"Fluxo turbulento - perfis\" width=\"381\" height=\"398\" data-lazy-type=\"image\" data-src=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/Turbulent-flow-profiles.png\" \/><\/a><figcaption id=\"caption-attachment-14476\" class=\"wp-caption-text\">Fluxo turbulento &#8211; perfis<\/figcaption><\/figure>\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\">\n<div class=\"inside-grid-column\">\n<div class=\"su-accordion\">\n<div class=\"su-spoiler su-spoiler-style-default su-spoiler-icon-arrow\" data-anchor=\"References\">\n<div class=\"su-spoiler-title\" tabindex=\"0\" role=\"button\"><\/div>\n<\/div>\n<\/div>\n<div tabindex=\"0\" role=\"button\">\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>Este artigo \u00e9 baseado na tradu\u00e7\u00e3o autom\u00e1tica do artigo original em ingl\u00eas. Para mais informa\u00e7\u00f5es, consulte o artigo em ingl\u00eas. Voc\u00ea pode nos ajudar. Se voc\u00ea deseja corrigir a tradu\u00e7\u00e3o, envie-a para: translations@nuclear-power.com ou preencha o formul\u00e1rio de tradu\u00e7\u00e3o on-line. Agradecemos sua ajuda, atualizaremos a tradu\u00e7\u00e3o o mais r\u00e1pido poss\u00edvel. Obrigado.<\/p>\n<\/div>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>O perfil de velocidade no fluxo turbulento \u00e9 mais plano na parte central do tubo.\u00a0O mais simples e mais conhecido \u00e9 o perfil de velocidade da lei de pot\u00eancia.\u00a0Engenharia T\u00e9rmica Perfil de velocidade turbulenta Fonte: Departamento de Energia dos EUA, TERMODIN\u00c2MICA, TRANSFER\u00caNCIA DE CALOR E FLUXO DE FLUIDO.\u00a0Manual de Fundamentos do DOE, Volume 1, 2 &#8230; <a title=\"O que \u00e9 o perfil de velocidade da lei de pot\u00eancia &#8211; Fluxo turbulento &#8211; Defini\u00e7\u00e3o\" class=\"read-more\" href=\"https:\/\/www.thermal-engineering.org\/pt-br\/o-que-e-o-perfil-de-velocidade-da-lei-de-potencia-fluxo-turbulento-definicao\/\" aria-label=\"More on O que \u00e9 o perfil de velocidade da lei de pot\u00eancia &#8211; Fluxo turbulento &#8211; Defini\u00e7\u00e3o\">Ler mais<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[14],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v15.4 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>O que \u00e9 o perfil de velocidade da lei de pot\u00eancia - Fluxo turbulento - Defini\u00e7\u00e3o<\/title>\n<meta name=\"description\" content=\"O perfil de velocidade no fluxo turbulento \u00e9 mais plano na parte central do tubo. 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