{"id":48929,"date":"2019-11-13T19:59:11","date_gmt":"2019-11-13T18:59:11","guid":{"rendered":"https:\/\/www.thermal-engineering.org\/o-que-e-o-numero-de-cavitacao-definicao\/"},"modified":"2019-11-13T19:59:11","modified_gmt":"2019-11-13T18:59:11","slug":"o-que-e-o-numero-de-cavitacao-definicao","status":"publish","type":"post","link":"https:\/\/www.thermal-engineering.org\/pt-br\/o-que-e-o-numero-de-cavitacao-definicao\/","title":{"rendered":"O que \u00e9 o n\u00famero de cavita\u00e7\u00e3o – defini\u00e7\u00e3o"},"content":{"rendered":"
\n
O n\u00famero de cavita\u00e7\u00e3o ou o par\u00e2metro de cavita\u00e7\u00e3o \u00e9 um n\u00famero sem dimens\u00e3o.\u00a0Caracteriza a proximidade da press\u00e3o no fluxo do l\u00edquido com a press\u00e3o do vapor.\u00a0Engenharia T\u00e9rmica<\/span><\/div>\n<\/div>\n
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Cavita\u00e7\u00e3o em Bombas Centr\u00edfugas<\/span><\/h2>\n

\"cavita\u00e7\u00e3o<\/a>Principais locais onde\u00a0<\/span>a cavita\u00e7\u00e3o<\/span><\/strong><\/a>\u00a0ocorre s\u00e3o em bombas,\u00a0<\/span>em\u00a0<\/span>turbinas<\/span><\/a>\u00a0ou h\u00e9lices<\/span><\/strong>\u00a0.\u00a0Nas bombas centr\u00edfugas, a cavita\u00e7\u00e3o resulta de uma\u00a0<\/span>redu\u00e7\u00e3o na press\u00e3o de suc\u00e7\u00e3o<\/span><\/strong>\u00a0, um\u00a0<\/span>aumento na temperatura de suc\u00e7\u00e3o<\/span><\/strong>\u00a0ou um\u00a0<\/span>aumento na vaz\u00e3o<\/span><\/strong>\u00a0acima daquela para a qual a bomba foi projetada.<\/span><\/p>\n

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<\/div>\n

N\u00famero de cavita\u00e7\u00e3o<\/span><\/h2>\n

O\u00a0<\/span>n\u00famero de cavita\u00e7\u00e3o (Ca)<\/span><\/strong>\u00a0ou o\u00a0<\/span>par\u00e2metro de cavita\u00e7\u00e3o<\/span><\/strong>\u00a0\u00e9 um n\u00famero sem dimens\u00e3o usado nos c\u00e1lculos de fluxo.\u00a0\u00c9 convencional caracterizar a proximidade da press\u00e3o no fluxo do l\u00edquido com a press\u00e3o do vapor (e, portanto, o potencial de cavita\u00e7\u00e3o) por meio do n\u00famero da cavita\u00e7\u00e3o.<\/span><\/p>\n

O n\u00famero da cavita\u00e7\u00e3o pode ser expresso como:<\/span><\/p>\n

\"n\u00famero<\/a><\/p>\n

Onde<\/span><\/p>\n

CA = n\u00famero de cavita\u00e7\u00e3o<\/span><\/em><\/p>\n

p = press\u00e3o local (Pa)<\/span><\/em><\/p>\n

p\u00a0<\/span><\/em>v<\/span><\/sub><\/em>\u00a0= press\u00e3o de vapor do fluido (Pa)<\/span><\/em><\/p>\n

\u03c1 = densidade do fluido (kg \/ m\u00a0<\/span><\/em>3<\/span><\/sup><\/em>\u00a0)<\/span><\/em><\/p>\n

v = velocidade do fluido (m \/ s)<\/span><\/em><\/p>\n<\/div>\n<\/div>\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","protected":false},"excerpt":{"rendered":"

O n\u00famero de cavita\u00e7\u00e3o ou o par\u00e2metro de cavita\u00e7\u00e3o \u00e9 um n\u00famero sem dimens\u00e3o.\u00a0Caracteriza a proximidade da press\u00e3o no fluxo do l\u00edquido com a press\u00e3o do vapor.\u00a0Engenharia T\u00e9rmica Cavita\u00e7\u00e3o em Bombas Centr\u00edfugas Principais locais onde\u00a0a cavita\u00e7\u00e3o\u00a0ocorre s\u00e3o em bombas,\u00a0em\u00a0turbinas\u00a0ou h\u00e9lices\u00a0.\u00a0Nas bombas centr\u00edfugas, a cavita\u00e7\u00e3o resulta de uma\u00a0redu\u00e7\u00e3o na press\u00e3o de suc\u00e7\u00e3o\u00a0, um\u00a0aumento na temperatura de … 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 o n\u00famero de cavita\u00e7\u00e3o - defini\u00e7\u00e3o<\/title>\n<meta name=\"description\" content=\"O n\u00famero de cavita\u00e7\u00e3o ou o par\u00e2metro de cavita\u00e7\u00e3o \u00e9 um n\u00famero sem dimens\u00e3o. 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