{"id":48957,"date":"2019-11-13T22:40:12","date_gmt":"2019-11-13T21:40:12","guid":{"rendered":"https:\/\/www.thermal-engineering.org\/o-que-e-plug-flow-slug-flow-definicao\/"},"modified":"2020-02-01T09:36:52","modified_gmt":"2020-02-01T08:36:52","slug":"o-que-e-plug-flow-slug-flow-definicao","status":"publish","type":"post","link":"https:\/\/www.thermal-engineering.org\/pt-br\/o-que-e-plug-flow-slug-flow-definicao\/","title":{"rendered":"O que \u00e9 Plug Flow – Slug Flow – Defini\u00e7\u00e3o"},"content":{"rendered":"
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Quer o fluxo seja de fluxo de buj\u00e3o ou de lesma, depende especialmente da fra\u00e7\u00e3o de vazio que causa a aglomera\u00e7\u00e3o de bolhas em buj\u00f5es e lesmas maiores.\u00a0Engenharia T\u00e9rmica<\/div>\n<\/div>\n
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Slug Flow – Tubos Verticais<\/h2>\n

O aumento da\u00a0fra\u00e7\u00e3o de vazios<\/a><\/strong>\u00a0\u00a0no\u00a0fluxo borbulhante<\/a>\u00a0causa\u00a0aglomera\u00e7\u00e3o de bolhas<\/strong>\u00a0em\u00a0plugues e lesmas maiores<\/strong>\u00a0.\u00a0Essas lesmas s\u00e3o similares em dimens\u00e3o ao di\u00e2metro do tubo.\u00a0Essas lesmas viajam a uma velocidade que \u00e9 uma fra\u00e7\u00e3o substancial da velocidade do g\u00e1s e ocorrem intermitentemente.\u00a0Como essas grandes lesmas de g\u00e1s s\u00e3o separadas umas das outras por lesmas de l\u00edquido, elas causam\u00a0grandes flutua\u00e7\u00f5es na press\u00e3o e na vaz\u00e3o do l\u00edquido<\/strong>\u00a0.\u00a0Em alguns casos, um fluxo descendente pode ser observado pr\u00f3ximo \u00e0 parede do tubo, mesmo que o fluxo l\u00edquido de fluido seja ascendente.\u00a0Isso \u00e9 causado pela\u00a0for\u00e7a gravitacional<\/strong>\u00a0.<\/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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\"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 de buj\u00e3o e fluxo de lesma – tubos horizontais<\/h2>\n

Aumentando ainda mais as causas da velocidade do g\u00e1s, as\u00a0ondas atingem o topo do tubo<\/strong>\u00a0.\u00a0Quer o fluxo seja de fluxo de buj\u00e3o ou de lesma, depende especialmente da fra\u00e7\u00e3o de vazio que causa a aglomera\u00e7\u00e3o de bolhas em buj\u00f5es e lesmas maiores.\u00a0No fluxo do buj\u00e3o, os di\u00e2metros das bolhas s\u00e3o menores que o tubo.\u00a0As lesmas s\u00e3o de dimens\u00e3o semelhante ao di\u00e2metro do tubo.\u00a0As lesmas viajam a uma velocidade que \u00e9 uma fra\u00e7\u00e3o substancial da velocidade do g\u00e1s e ocorrem intermitentemente.\u00a0Como essas grandes lesmas de g\u00e1s s\u00e3o separadas umas das outras por lesmas de l\u00edquido, elas causam\u00a0grandes flutua\u00e7\u00f5es na press\u00e3o e na vaz\u00e3o do l\u00edquido<\/strong>\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>
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.\u00a0<\/span>Linhas 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.\u00a0<\/span>Fonte: Mandhane, JM, Gregory, GA e Aziz, KA (1974).\u00a0<\/span>Um mapa de padr\u00f5es de fluxo para fluxo g\u00e1s-l\u00edquido em tubos horizontais.\u00a0<\/span>Int.\u00a0<\/span>J. Fluxo multif\u00e1sico<\/span>
\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<\/figcaption><\/figure>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

Quer o fluxo seja de fluxo de buj\u00e3o ou de lesma, depende especialmente da fra\u00e7\u00e3o de vazio que causa a aglomera\u00e7\u00e3o de bolhas em buj\u00f5es e lesmas maiores.\u00a0Engenharia T\u00e9rmica Slug Flow – Tubos Verticais O aumento da\u00a0fra\u00e7\u00e3o de vazios\u00a0\u00a0no\u00a0fluxo borbulhante\u00a0causa\u00a0aglomera\u00e7\u00e3o de bolhas\u00a0em\u00a0plugues e lesmas maiores\u00a0.\u00a0Essas lesmas s\u00e3o similares em dimens\u00e3o ao di\u00e2metro do tubo.\u00a0Essas lesmas … 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 Plug Flow - Slug Flow - Defini\u00e7\u00e3o<\/title>\n<meta name=\"description\" content=\"Quer o fluxo seja de fluxo de buj\u00e3o ou de lesma, depende especialmente da fra\u00e7\u00e3o de vazio que causa a aglomera\u00e7\u00e3o de bolhas em buj\u00f5es e lesmas maiores. 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