{"id":49189,"date":"2019-11-14T22:14:18","date_gmt":"2019-11-14T21:14:18","guid":{"rendered":"https:\/\/www.thermal-engineering.org\/o-que-e-fluxo-laminar-vs-turbulento-definicao\/"},"modified":"2020-02-02T09:45:36","modified_gmt":"2020-02-02T08:45:36","slug":"o-que-e-fluxo-laminar-vs-turbulento-definicao","status":"publish","type":"post","link":"https:\/\/www.thermal-engineering.org\/pt-br\/o-que-e-fluxo-laminar-vs-turbulento-definicao\/","title":{"rendered":"O que \u00e9 fluxo laminar vs turbulento – defini\u00e7\u00e3o"},"content":{"rendered":"
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Laminar vs fluxo turbulento.\u00a0O fluxo laminar \u00e9 caracterizado por caminhos suaves ou regulares de part\u00edculas do fluido, em contraste com o fluxo turbulento.\u00a0Engenharia T\u00e9rmica<\/div>\n<\/div>\n
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Fluxo Turbulento vs Laminar<\/h2>\n

Fluxo laminar<\/h2>\n

\"Regime<\/a>Na din\u00e2mica de fluidos,\u00a0o fluxo laminar<\/strong>\u00a0\u00e9 caracterizado por\u00a0trajetos suaves ou regulares<\/strong>\u00a0de part\u00edculas do fluido, em contraste com o\u00a0fluxo turbulento<\/strong>\u00a0, caracterizado pelo\u00a0movimento irregular<\/strong>\u00a0das part\u00edculas do fluido.\u00a0O fluido flui em\u00a0camadas paralelas<\/strong>\u00a0(com\u00a0mistura lateral m\u00ednima<\/strong>\u00a0), sem interrup\u00e7\u00e3o entre as camadas.\u00a0Portanto, o fluxo laminar tamb\u00e9m \u00e9 conhecido como\u00a0fluxo aerodin\u00e2mico ou viscoso<\/strong>\u00a0.<\/p>\n

O termo fluxo de corrente de fluxo \u00e9 descritivo do fluxo porque, no fluxo laminar, camadas de \u00e1gua fluindo umas sobre as outras em\u00a0velocidades diferentes,<\/strong>\u00a0praticamente sem mistura entre as camadas, as part\u00edculas de fluido se movem em caminhos ou linhas de fluxo definidos e observ\u00e1veis.<\/p>\n

Quando um fluido est\u00e1 fluindo atrav\u00e9s de um\u00a0canal fechado<\/strong>\u00a0, como um tubo ou entre duas placas planas, pode ocorrer um dos dois tipos de fluxo (fluxo laminar ou fluxo turbulento), dependendo da\u00a0velocidade<\/strong>\u00a0,\u00a0viscosidade<\/strong>\u00a0do fluido e do\u00a0tamanho do tubo ( ou no n\u00famero de Reynolds)<\/strong>\u00a0.\u00a0O fluxo laminar tende a ocorrer em velocidades mais baixas e com alta viscosidade.<\/p>\n

Fluxo turbulento<\/h2>\n

\"Fluxo<\/a>Na din\u00e2mica de fluidos, o\u00a0fluxo turbulento<\/strong>\u00a0\u00e9 caracterizado pelo\u00a0movimento irregular<\/strong>\u00a0de part\u00edculas (pode-se dizer\u00a0ca\u00f3tico<\/strong>\u00a0) do fluido.\u00a0Ao contr\u00e1rio do fluxo laminar, o fluido\u00a0n\u00e3o flui em camadas paralelas<\/strong>\u00a0, a\u00a0mistura lateral \u00e9 muito alta<\/strong>\u00a0e h\u00e1 uma ruptura entre as camadas.\u00a0A turbul\u00eancia tamb\u00e9m \u00e9 caracterizada por\u00a0recircula\u00e7\u00e3o, redemoinhos<\/strong>\u00a0e\u00a0aleatoriedade aparente<\/strong>\u00a0.\u00a0No fluxo turbulento, a velocidade do fluido em um ponto est\u00e1 continuamente sofrendo altera\u00e7\u00f5es na\u00a0magnitude e na dire\u00e7\u00e3o<\/strong>\u00a0.<\/p>\n

O conhecimento detalhado do comportamento do regime de fluxo turbulento \u00e9 importante na engenharia, porque a\u00a0maioria dos fluxos industriais<\/strong>\u00a0, especialmente os de engenharia nuclear,\u00a0s\u00e3o turbulentos<\/strong>\u00a0.\u00a0Infelizmente, o car\u00e1ter altamente intermitente e irregular da turbul\u00eancia\u00a0complica todas as an\u00e1lises<\/strong>\u00a0.\u00a0De fato, costuma-se dizer que a turbul\u00eancia \u00e9 o ”\u00a0\u00faltimo problema n\u00e3o resolvido da f\u00edsica matem\u00e1tica cl\u00e1ssica<\/strong>\u00a0“.<\/p>\n

A principal ferramenta dispon\u00edvel para sua an\u00e1lise \u00e9 a\u00a0an\u00e1lise CFD<\/strong>\u00a0.\u00a0O CFD \u00e9 um ramo da mec\u00e2nica de fluidos que utiliza an\u00e1lise e algoritmos num\u00e9ricos para resolver e analisar problemas que envolvem\u00a0fluxos turbulentos de fluido<\/strong>\u00a0.\u00a0\u00c9 amplamente aceito que\u00a0as equa\u00e7\u00f5es de Navier-Stokes<\/strong>\u00a0(ou\u00a0equa\u00e7\u00f5es<\/strong>\u00a0simplificadas\u00a0de Navier-Stokes com m\u00e9dia de Reynolds<\/strong>\u00a0) s\u00e3o capazes de exibir solu\u00e7\u00f5es turbulentas, e essas equa\u00e7\u00f5es s\u00e3o a base de praticamente todos os c\u00f3digos CFD.<\/p>\n<\/div>\n<\/div>\n

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

Laminar vs fluxo turbulento.\u00a0O fluxo laminar \u00e9 caracterizado por caminhos suaves ou regulares de part\u00edculas do fluido, em contraste com o fluxo turbulento.\u00a0Engenharia T\u00e9rmica Fluxo Turbulento vs Laminar Fluxo laminar Na din\u00e2mica de fluidos,\u00a0o fluxo laminar\u00a0\u00e9 caracterizado por\u00a0trajetos suaves ou regulares\u00a0de part\u00edculas do fluido, em contraste com o\u00a0fluxo turbulento\u00a0, caracterizado pelo\u00a0movimento irregular\u00a0das part\u00edculas do fluido.\u00a0O … 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 laminar vs turbulento - defini\u00e7\u00e3o<\/title>\n<meta name=\"description\" content=\"Laminar vs fluxo turbulento. 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