{"id":49081,"date":"2019-11-14T10:14:59","date_gmt":"2019-11-14T09:14:59","guid":{"rendered":"https:\/\/www.thermal-engineering.org\/o-que-e-comprimento-hidrodinamico-da-entrada-definicao\/"},"modified":"2020-02-01T17:35:07","modified_gmt":"2020-02-01T16:35:07","slug":"o-que-e-comprimento-hidrodinamico-da-entrada-definicao","status":"publish","type":"post","link":"https:\/\/www.thermal-engineering.org\/pt-br\/o-que-e-comprimento-hidrodinamico-da-entrada-definicao\/","title":{"rendered":"O que \u00e9 Comprimento Hidrodin\u00e2mico da Entrada – Defini\u00e7\u00e3o"},"content":{"rendered":"
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Para caracterizar a regi\u00e3o com entrada, o comprimento hidrodin\u00e2mico da entrada deve ser introduzido.\u00a0O comprimento da entrada hidrodin\u00e2mica deve ser verificado em todos os c\u00e1lculos.\u00a0Engenharia T\u00e9rmica<\/div>\n<\/div>\n
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Comprimento hidrodin\u00e2mico da entrada<\/h2>\n
\"Fluxo<\/a>
Fonte: White Frank M., Mec\u00e2nica dos Fluidos, McGraw-Hill Education, 7\u00aa edi\u00e7\u00e3o, fevereiro de 2010, ISBN: 978-0077422417<\/figcaption><\/figure>\n

Para\u00a0o<\/a>\u00a0regime de\u00a0fluxo interno<\/a>\u00a0, uma\u00a0regi\u00e3o de entrada<\/strong>\u00a0\u00e9 t\u00edpica.\u00a0Nesta regi\u00e3o, um fluxo a montante quase inviscido a montante converge e entra no tubo.\u00a0Para caracterizar esta regi\u00e3o, o\u00a0comprimento da entrada hidrodin\u00e2mica<\/strong>\u00a0\u00e9 introduzido e \u00e9 aproximadamente igual a:<\/p>\n

\"comprimento<\/a><\/p>\n

O comprimento m\u00e1ximo de entrada hidrodin\u00e2mica, em\u00a0Re\u00a0D, crit<\/sub>\u00a0\u00a0= 2300<\/strong>\u00a0(\u00a0fluxo laminar<\/strong>\u00a0), \u00e9 L\u00a0e<\/sub>\u00a0= 138d, onde D \u00e9 o di\u00e2metro do tubo.\u00a0Esse \u00e9 o maior comprimento de desenvolvimento poss\u00edvel.\u00a0Em\u00a0escoamento turbulento<\/strong>\u00a0, as camadas limite crescer mais rapidamente, e L\u00a0e<\/sub>\u00a0\u00a0\u00e9 relativamente mais curto.\u00a0Para qualquer problema,\u00a0L\u00a0e<\/sub>\u00a0\u00a0\/ D<\/strong>\u00a0deve ser\u00a0verificado<\/strong>\u00a0para ver se L\u00a0e<\/sub>\u00a0\u00a0\u00e9 insignificante quando comparado ao comprimento do tubo.\u00a0A uma dist\u00e2ncia finita da entrada, os efeitos da entrada podem ser negligenciados, porque as camadas limites se fundem e o n\u00facleo inv\u00edscido desaparece.\u00a0O fluxo do tubo \u00e9 ent\u00e3o\u00a0totalmente desenvolvido<\/strong>\u00a0.<\/p>\n<\/div>\n<\/div>\n

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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<\/div>\n","protected":false},"excerpt":{"rendered":"

Para caracterizar a regi\u00e3o com entrada, o comprimento hidrodin\u00e2mico da entrada deve ser introduzido.\u00a0O comprimento da entrada hidrodin\u00e2mica deve ser verificado em todos os c\u00e1lculos.\u00a0Engenharia T\u00e9rmica Comprimento hidrodin\u00e2mico da entrada Fonte: White Frank M., Mec\u00e2nica dos Fluidos, McGraw-Hill Education, 7\u00aa edi\u00e7\u00e3o, fevereiro de 2010, ISBN: 978-0077422417 Para\u00a0o\u00a0regime de\u00a0fluxo interno\u00a0, uma\u00a0regi\u00e3o de entrada\u00a0\u00e9 t\u00edpica.\u00a0Nesta regi\u00e3o, um … 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 Comprimento Hidrodin\u00e2mico da Entrada - Defini\u00e7\u00e3o<\/title>\n<meta name=\"description\" content=\"Para caracterizar a regi\u00e3o com entrada, o comprimento hidrodin\u00e2mico da entrada deve ser introduzido. 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