{"id":48953,"date":"2019-11-13T22:20:47","date_gmt":"2019-11-13T21:20:47","guid":{"rendered":"https:\/\/www.thermal-engineering.org\/o-que-e-fluxo-borbulhante-fluxo-bifasico-definicao\/"},"modified":"2020-02-01T09:36:24","modified_gmt":"2020-02-01T08:36:24","slug":"o-que-e-fluxo-borbulhante-fluxo-bifasico-definicao","status":"publish","type":"post","link":"https:\/\/www.thermal-engineering.org\/pt-br\/o-que-e-fluxo-borbulhante-fluxo-bifasico-definicao\/","title":{"rendered":"O que \u00e9 fluxo borbulhante – fluxo bif\u00e1sico – defini\u00e7\u00e3o"},"content":{"rendered":"
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Fluxo borbulhante.\u00a0Em contraste com o fluxo borbulhante no canal vertical, o fluxo borbulhante no canal horizontal \u00e9 fortemente influenciado pela for\u00e7a gravitacional.\u00a0Engenharia T\u00e9rmica<\/div>\n<\/div>\n
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Bubbly Flow – Tubos verticais<\/h2>\n

No fluxo borbulhante, a taxa de fluxo do l\u00edquido \u00e9 alta o suficiente para quebrar o g\u00e1s em bolhas, mas n\u00e3o \u00e9 alta o suficiente para fazer com que as bolhas se misturem bem na fase l\u00edquida.\u00a0As\u00a0bolhas variam muito em tamanho e forma<\/strong>\u00a0, mas geralmente s\u00e3o quase esf\u00e9ricas e muito\u00a0menores que o di\u00e2metro<\/strong>\u00a0do tubo.<\/p>\n

Veja tamb\u00e9m:\u00a0Fluxo de fluido bif\u00e1sico<\/a><\/p>\n<\/div>\n<\/div>\n

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\"Borbulhante<\/a>
Esbo\u00e7os de regimes de fluxo para fluxo bif\u00e1sico em um tubo vertical.\u00a0Fonte: Weisman, J. Padr\u00f5es de fluxo bif\u00e1sicos.\u00a0Cap\u00edtulo 15 do Manual de Fluidos em Movimento, Cheremisinoff NP, Gupta R. 1983, Ann Arbor Science Publishers.<\/figcaption><\/figure>\n<\/div>\n<\/div>\n
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<\/div>\n
\"padr\u00f5es<\/a>
O mapa do regime de fluxo vertical de Hewitt e Roberts (1969) para fluxo em um tubo de 3,2 cm de di\u00e2metro, validado para fluxo de ar \/ \u00e1gua \u00e0 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<\/figcaption><\/figure>\n
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Fluxo borbulhante – tubos horizontais<\/h2>\n

Em contraste com o fluxo borbulhante no canal vertical, o fluxo borbulhante no canal horizontal \u00e9\u00a0fortemente influenciado pela for\u00e7a gravitacional<\/strong>\u00a0.\u00a0Devido \u00e0\u00a0flutuabilidade<\/strong>\u00a0, as bolhas s\u00e3o dispersas no l\u00edquido com uma concentra\u00e7\u00e3o mais alta na metade superior do canal.\u00a0Esse regime geralmente ocorre em\u00a0taxas de fluxo mais altas<\/strong>\u00a0, porque a taxas de fluxo mais baixas a for\u00e7a gravitacional tende a drenar o anel l\u00edquido em dire\u00e7\u00e3o \u00e0 parte inferior do canal, resultando em\u00a0fluxo estratificado<\/strong><\/a>\u00a0.<\/p>\n<\/div>\n<\/div>\n

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\"bolha,<\/a>
Esbo\u00e7os de regimes de fluxo para fluxo bif\u00e1sico em um tubo horizontal.\u00a0Fonte: Weisman, J. Padr\u00f5es de fluxo bif\u00e1sicos.\u00a0Cap\u00edtulo 15 do Manual de Fluidos em Movimento, Cheremisinoff NP, Gupta R. 1983, Ann Arbor Science Publishers.<\/figcaption><\/figure>\n<\/div>\n<\/div>\n
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\"padr\u00f5es<\/a><\/p>\n

Um mapa de regime de fluxo para o fluxo de uma mistura ar \/ \u00e1gua em um tubo horizontal de 2,5 cm de di\u00e2metro a 25 \u00b0 C e 1 bar.\u00a0Linhas e pontos s\u00f3lidos s\u00e3o observa\u00e7\u00f5es experimentais das condi\u00e7\u00f5es de transi\u00e7\u00e3o, enquanto as zonas tracejadas representam previs\u00f5es te\u00f3ricas.\u00a0Fonte: Mandhane, JM, Gregory, GA e Aziz, KA (1974).\u00a0Um mapa de padr\u00f5es de fluxo para fluxo g\u00e1s-l\u00edquido em tubos horizontais.\u00a0Int.\u00a0J. Fluxo multif\u00e1sico<\/span><\/p>\n

……………………………………………………………………………………………………………………………….<\/p>\n

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","protected":false},"excerpt":{"rendered":"

Fluxo borbulhante.\u00a0Em contraste com o fluxo borbulhante no canal vertical, o fluxo borbulhante no canal horizontal \u00e9 fortemente influenciado pela for\u00e7a gravitacional.\u00a0Engenharia T\u00e9rmica Bubbly Flow – Tubos verticais No fluxo borbulhante, a taxa de fluxo do l\u00edquido \u00e9 alta o suficiente para quebrar o g\u00e1s em bolhas, mas n\u00e3o \u00e9 alta o suficiente para fazer … 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":"\nO que \u00e9 fluxo borbulhante - fluxo bif\u00e1sico - defini\u00e7\u00e3o<\/title>\n<meta name=\"description\" content=\"Fluxo borbulhante. Em contraste com o fluxo borbulhante no canal vertical, o fluxo borbulhante no canal horizontal \u00e9 fortemente influenciado pela for\u00e7a gravitacional. 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