{"id":49065,"date":"2019-11-14T09:00:37","date_gmt":"2019-11-14T08:00:37","guid":{"rendered":"https:\/\/www.thermal-engineering.org\/quais-sao-as-caracteristicas-do-fluxo-bifasico-definicao\/"},"modified":"2019-11-14T09:00:37","modified_gmt":"2019-11-14T08:00:37","slug":"quais-sao-as-caracteristicas-do-fluxo-bifasico-definicao","status":"publish","type":"post","link":"https:\/\/www.thermal-engineering.org\/pt-br\/quais-sao-as-caracteristicas-do-fluxo-bifasico-definicao\/","title":{"rendered":"Quais s\u00e3o as caracter\u00edsticas do fluxo bif\u00e1sico &#8211; Defini\u00e7\u00e3o"},"content":{"rendered":"<div class=\"su-quote su-quote-style-default\">\n<div class=\"su-quote-inner su-clearfix\"><span>Caracter\u00edsticas do fluxo bif\u00e1sico.\u00a0Todos os problemas de fluxo de duas fases t\u00eam caracter\u00edsticas que s\u00e3o caracteristicamente diferentes daquelas encontradas em problemas de fase \u00fanica.\u00a0Engenharia T\u00e9rmica<\/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\"><a href=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/two-phase-fluid-flow.png\"><img loading=\"lazy\" class=\"alignright size-full wp-image-14768 lazy-loaded\" src=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/two-phase-fluid-flow.png\" alt=\"fluxo de fluido bif\u00e1sico\" width=\"82\" height=\"332\" data-lazy-type=\"image\" data-src=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/two-phase-fluid-flow.png\" \/><\/a><\/p>\n<h2><span>Caracter\u00edsticas do fluxo de fluido bif\u00e1sico<\/span><\/h2>\n<p><span>Todos os problemas de fluxo de duas fases t\u00eam caracter\u00edsticas que s\u00e3o caracteristicamente diferentes daquelas encontradas em problemas de fase \u00fanica.<\/span><\/p>\n<ul>\n<li><span>No caso de vapor e \u00e1gua l\u00edquida, a\u00a0<\/span><strong><span>densidade<\/span><\/strong><span>\u00a0das duas fases\u00a0<\/span><strong><span>difere por um fator de cerca de 1000<\/span><\/strong><span>\u00a0.\u00a0Portanto, a influ\u00eancia da for\u00e7a do corpo gravitacional nos fluxos multif\u00e1sicos \u00e9 de muito maior import\u00e2ncia do que no caso dos fluxos monof\u00e1sicos.<\/span><\/li>\n<li><span>A\u00a0<\/span><strong><span>velocidade do som<\/span><\/strong><span>\u00a0muda drasticamente para os materiais em fase de mudan\u00e7a e pode ter ordens de magnitude diferentes.\u00a0Isso influencia significativamente um\u00a0<\/span><strong><span>fluxo atrav\u00e9s de um orif\u00edcio<\/span><\/strong><span>\u00a0.<\/span><\/li>\n<li><span>A\u00a0<\/span><strong><span>concentra\u00e7\u00e3o<\/span><\/strong><span>\u00a0relativa\u00a0de diferentes fases \u00e9 geralmente um par\u00e2metro dependente de grande import\u00e2ncia em fluxos multif\u00e1sicos, enquanto \u00e9 um par\u00e2metro sem conseq\u00fc\u00eancia em fluxos monof\u00e1sicos.<\/span><\/li>\n<li><span>A mudan\u00e7a de fase significa que as quedas de press\u00e3o induzidas pelo fluxo podem causar altera\u00e7\u00f5es de fase adicionais (por exemplo, a \u00e1gua pode evaporar atrav\u00e9s de um orif\u00edcio), aumentando o volume relativo do meio gasoso, compress\u00edvel e aumentando as velocidades de efluxo, diferentemente do fluxo incompress\u00edvel monof\u00e1sico, em que a diminui\u00e7\u00e3o de um orif\u00edcio diminuiria a velocidade do efluxo.<\/span><\/li>\n<li><span>A distribui\u00e7\u00e3o espacial das v\u00e1rias fases no canal de fluxo afeta fortemente o comportamento do fluxo.<\/span><\/li>\n<li><span>Existem muitos tipos de instabilidades no fluxo multif\u00e1sico.<\/span><\/li>\n<\/ul>\n<figure id=\"attachment_14788\" class=\"wp-caption aligncenter\" aria-describedby=\"caption-attachment-14788\"><a href=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/flow-patterns-vertical-flow-Hewitt.png\"><img loading=\"lazy\" class=\"size-full wp-image-14788 lazy-loaded\" src=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/flow-patterns-vertical-flow-Hewitt.png\" alt=\"padr\u00f5es de fluxo - fluxo vertical - Hewitt\" width=\"428\" height=\"397\" data-lazy-type=\"image\" data-src=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/flow-patterns-vertical-flow-Hewitt.png\" \/><\/a><figcaption id=\"caption-attachment-14788\" class=\"wp-caption-text\"><span>O mapa do regime de fluxo vertical de Hewitt e Roberts (1969)<\/span><br \/>\n<span>para fluxo em um tubo de 3,2 cm de di\u00e2metro, validado para fluxo de ar \/ \u00e1gua \u00e0<\/span><br \/>\n<span>press\u00e3o atmosf\u00e9rica e fluxo de vapor \/ \u00e1gua a alta press\u00e3o.\u00a0Fonte: Brennen, CE, Fundamentos de fluxos multif\u00e1sicos, Cambridge University Press, 2005, ISBN 0521 848040<\/span><\/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\"><\/div>\n<div class=\"su-spoiler-title\" 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","protected":false},"excerpt":{"rendered":"<p>Caracter\u00edsticas do fluxo bif\u00e1sico.\u00a0Todos os problemas de fluxo de duas fases t\u00eam caracter\u00edsticas que s\u00e3o caracteristicamente diferentes daquelas encontradas em problemas de fase \u00fanica.\u00a0Engenharia T\u00e9rmica Caracter\u00edsticas do fluxo de fluido bif\u00e1sico Todos os problemas de fluxo de duas fases t\u00eam caracter\u00edsticas que s\u00e3o caracteristicamente diferentes daquelas encontradas em problemas de fase \u00fanica. No caso de &#8230; <a title=\"Quais s\u00e3o as caracter\u00edsticas do fluxo bif\u00e1sico &#8211; Defini\u00e7\u00e3o\" class=\"read-more\" href=\"https:\/\/www.thermal-engineering.org\/pt-br\/quais-sao-as-caracteristicas-do-fluxo-bifasico-definicao\/\" aria-label=\"More on Quais s\u00e3o as caracter\u00edsticas do fluxo bif\u00e1sico &#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>Quais s\u00e3o as caracter\u00edsticas do fluxo bif\u00e1sico - Defini\u00e7\u00e3o<\/title>\n<meta name=\"description\" content=\"Caracter\u00edsticas do fluxo bif\u00e1sico. 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