{"id":709439,"date":"2024-08-31T12:14:34","date_gmt":"2024-08-31T11:14:34","guid":{"rendered":"https:\/\/www.thermal-engineering.org\/?p=709439"},"modified":"2024-08-31T12:14:34","modified_gmt":"2024-08-31T11:14:34","slug":"hieu-ung-venturi-trong-dong-chay-chat-long-la-gi","status":"publish","type":"post","link":"https:\/\/www.thermal-engineering.org\/vi\/hieu-ung-venturi-trong-dong-chay-chat-long-la-gi\/","title":{"rendered":"Hi\u1ec7u \u1ee8ng Venturi trong D\u00f2ng Ch\u1ea3y Ch\u1ea5t L\u1ecfng L\u00e0 G\u00ec?"},"content":{"rendered":"<p class=\"sidekick\">Hi\u1ec7u \u1ee8ng Venturi trong D\u00f2ng Ch\u1ea3y Ch\u1ea5t L\u1ecfng L\u00e0 G\u00ec? Gi\u1ea3i th\u00edch nguy\u00ean l\u00fd Venturi, c\u00e1ch n\u00f3 l\u00e0m gi\u1ea3m \u00e1p su\u1ea5t v\u00e0 t\u0103ng t\u1ed1c \u0111\u1ed9 d\u00f2ng ch\u1ea3y trong \u1ed1ng d\u1eabn.<\/p>\n<p><img src=\"https:\/\/www.thermal-engineering.org\/wp-content\/uploads\/2024\/07\/hieu_ung_venturi_trong_dong_chay_chat_long_la_gi.png\" alt=\"Hi\u1ec7u \u1ee8ng Venturi trong D\u00f2ng Ch\u1ea3y Ch\u1ea5t L\u1ecfng L\u00e0 G\u00ec?\" style=\"display: block; margin-left: auto; margin-right: auto;\"\/><\/p>\n<h2>Hi\u1ec7u \u1ee8ng Venturi trong D\u00f2ng Ch\u1ea3y Ch\u1ea5t L\u1ecfng L\u00e0 G\u00ec?<\/h2>\n<p>Hi\u1ec7u \u1ee9ng Venturi l\u00e0 m\u1ed9t hi\u1ec7n t\u01b0\u1ee3ng th\u00fa v\u1ecb trong l\u0129nh v\u1ef1c c\u01a1 h\u1ecdc ch\u1ea5t l\u1ecfng, n\u01a1i m\u00e0 s\u1ef1 thay \u0111\u1ed5i v\u1ec1 t\u1ed1c \u0111\u1ed9 d\u00f2ng ch\u1ea3y d\u1eabn \u0111\u1ebfn s\u1ef1 thay \u0111\u1ed5i v\u1ec1 \u00e1p su\u1ea5t. Hi\u1ec7n t\u01b0\u1ee3ng n\u00e0y \u0111\u01b0\u1ee3c \u0111\u1eb7t theo t\u00ean c\u1ee7a nh\u00e0 khoa h\u1ecdc ng\u01b0\u1eddi \u00dd, Giovanni Battista Venturi, ng\u01b0\u1eddi \u0111\u00e3 ph\u00e1t hi\u1ec7n ra n\u00f3 v\u00e0o th\u1ebf k\u1ef7 18.<\/p>\n<h2>Nguy\u00ean l\u00fd Ho\u1ea1t \u0111\u1ed9ng c\u1ee7a Hi\u1ec7u \u1ee8ng Venturi<\/h2>\n<p>Hi\u1ec7u \u1ee9ng Venturi x\u1ea3y ra khi d\u00f2ng ch\u1ea3y c\u1ee7a m\u1ed9t ch\u1ea5t l\u1ecfng qua m\u1ed9t \u1ed1ng c\u00f3 ti\u1ebft di\u1ec7n thay \u0111\u1ed5i. Khi ch\u1ea5t l\u1ecfng ch\u1ea3y qua m\u1ed9t \u0111o\u1ea1n \u1ed1ng h\u1eb9p (c\u1ed5 h\u1ecdng), t\u1ed1c \u0111\u1ed9 c\u1ee7a ch\u1ea5t l\u1ecfng t\u0103ng l\u00ean, v\u00e0 \u00e1p su\u1ea5t gi\u1ea3m xu\u1ed1ng. Hi\u1ec7n t\u01b0\u1ee3ng n\u00e0y c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c gi\u1ea3i th\u00edch b\u1eb1ng ph\u01b0\u01a1ng tr\u00ecnh Bernoulli, m\u1ed9t c\u00f4ng c\u1ee5 to\u00e1n h\u1ecdc quan tr\u1ecdng trong c\u01a1 h\u1ecdc ch\u1ea5t l\u1ecfng:<\/p>\n<p>P + \\frac{1}{2}\\rho v^2 + \\rho gh = h\u1eb1ng s\u1ed1<\/p>\n<ul>\n<li>P: \u00c1p su\u1ea5t c\u1ee7a ch\u1ea5t l\u1ecfng (Pa)<\/li>\n<li>\\rho: M\u1eadt \u0111\u1ed9 c\u1ee7a ch\u1ea5t l\u1ecfng (kg\/m<sup>3<\/sup>)<\/li>\n<li>v: V\u1eadn t\u1ed1c d\u00f2ng ch\u1ea3y (m\/s)<\/li>\n<li>g: Gia t\u1ed1c tr\u1ecdng tr\u01b0\u1eddng (m\/s<sup>2<\/sup>)<\/li>\n<li>h: \u0110\u1ed9 cao (m)<\/li>\n<\/ul>\n<p>Trong m\u1ed9t \u1ed1ng ngang, x\u00e9t tr\u01b0\u1eddng h\u1ee3p \u0111\u1ed9 cao h l\u00e0 kh\u00f4ng \u0111\u1ed5i, ph\u01b0\u01a1ng tr\u00ecnh Bernoulli c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c \u0111\u01a1n gi\u1ea3n h\u00f3a:<\/p>\n<p>P + \\frac{1}{2}\\rho v^2 = h\u1eb1ng s\u1ed1<\/p>\n<h2>\u1ee8ng D\u1ee5ng c\u1ee7a Hi\u1ec7u \u1ee8ng Venturi<\/h2>\n<p>Hi\u1ec7u \u1ee9ng Venturi c\u00f3 r\u1ea5t nhi\u1ec1u \u1ee9ng d\u1ee5ng trong c\u00e1c h\u1ec7 th\u1ed1ng c\u01a1 h\u1ecdc v\u00e0 k\u1ef9 thu\u1eadt:<\/p>\n<ol>\n<li><b>\u0110\u1ed3ng h\u1ed3 \u0111o l\u01b0u l\u01b0\u1ee3ng:<\/b> C\u00e1c thi\u1ebft b\u1ecb \u0111o l\u01b0u l\u01b0\u1ee3ng d\u00f9ng hi\u1ec7u \u1ee9ng Venturi \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh t\u1ed1c \u0111\u1ed9 d\u00f2ng ch\u1ea3y c\u1ee7a ch\u1ea5t l\u1ecfng.<\/li>\n<li><b>C\u00e1c b\u1ed9 ch\u1ebf h\u00f2a kh\u00ed:<\/b> Trong \u0111\u1ed9ng c\u01a1 xe h\u01a1i, h\u1ed7n h\u1ee3p kh\u00f4ng kh\u00ed v\u00e0 nhi\u00ean li\u1ec7u \u0111\u01b0\u1ee3c \u0111i\u1ec1u ch\u1ec9nh b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng hi\u1ec7u \u1ee9ng Venturi trong b\u1ed9 ch\u1ebf h\u00f2a kh\u00ed.<\/li>\n<li><b>M\u00e1y l\u1ecdc n\u01b0\u1edbc:<\/b> Hi\u1ec7u \u1ee9ng Venturi \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 l\u00e0m t\u0103ng \u00e1p su\u1ea5t trong qu\u00e1 tr\u00ecnh l\u1ecdc n\u01b0\u1edbc.<\/li>\n<li><b>H\u1ec7 th\u1ed1ng th\u00f4ng gi\u00f3:<\/b> S\u1eed d\u1ee5ng hi\u1ec7n t\u01b0\u1ee3ng n\u00e0y trong c\u00e1c h\u1ec7 th\u1ed1ng th\u00f4ng gi\u00f3 \u0111\u1ec3 \u0111i\u1ec1u ch\u1ec9nh lu\u1ed3ng kh\u00f4ng kh\u00ed.<\/li>\n<\/ol>\n<h2>V\u00ed D\u1ee5 C\u1ee5 Th\u1ec3 V\u1ec1 Hi\u1ec7u \u1ee8ng Venturi<\/h2>\n<p>M\u1ed9t v\u00ed d\u1ee5 ph\u1ed5 bi\u1ebfn v\u1ec1 hi\u1ec7u \u1ee9ng Venturi l\u00e0 khi b\u1ea1n \u00e9p m\u1ea1nh d\u00f2ng n\u01b0\u1edbc t\u1eeb v\u00f2i, t\u1ea1o ra m\u1ed9t tia n\u01b0\u1edbc m\u1ea1nh h\u01a1n, nh\u01b0ng \u00e1p su\u1ea5t gi\u1ea3m. Trong c\u00e1c b\u1ed9 \u0111o l\u01b0u l\u01b0\u1ee3ng c\u00f4ng nghi\u1ec7p, c\u1ed5 h\u1ecdng c\u1ee7a \u1ed1ng \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 t\u0103ng t\u1ed1c l\u01b0u l\u01b0\u1ee3ng ch\u1ea5t l\u1ecfng v\u00e0 gi\u1ea3m \u00e1p su\u1ea5t, cho ph\u00e9p \u0111o l\u01b0\u1eddng l\u01b0u l\u01b0\u1ee3ng ch\u00ednh x\u00e1c h\u01a1n.<\/p>\n<p>Hi\u1ec7u \u1ee9ng Venturi l\u00e0 m\u1ed9t ph\u1ea7n quan tr\u1ecdng c\u1ee7a l\u00fd thuy\u1ebft c\u01a1 h\u1ecdc ch\u1ea5t l\u1ecfng v\u00e0 c\u00f3 r\u1ea5t nhi\u1ec1u \u1ee9ng d\u1ee5ng th\u1ef1c ti\u1ec5n c\u00f3 gi\u00e1 tr\u1ecb trong \u0111\u1eddi s\u1ed1ng h\u00e0ng ng\u00e0y v\u00e0 trong c\u00f4ng ngh\u1ec7 hi\u1ec7n \u0111\u1ea1i. Qua vi\u1ec7c hi\u1ec3u r\u00f5 v\u00e0 \u00e1p d\u1ee5ng hi\u1ec7u \u1ee9ng n\u00e0y, ch\u00fang ta c\u00f3 th\u1ec3 ph\u00e1t tri\u1ec3n nhi\u1ec1u c\u00f4ng ngh\u1ec7 hi\u1ec7u qu\u1ea3 v\u00e0 ti\u1ebft ki\u1ec7m n\u0103ng l\u01b0\u1ee3ng h\u01a1n.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Hi\u1ec7u \u1ee8ng Venturi trong D\u00f2ng Ch\u1ea3y Ch\u1ea5t L\u1ecfng L\u00e0 G\u00ec? Gi\u1ea3i th\u00edch nguy\u00ean l\u00fd Venturi, c\u00e1ch n\u00f3 l\u00e0m gi\u1ea3m \u00e1p su\u1ea5t v\u00e0 t\u0103ng t\u1ed1c \u0111\u1ed9 d\u00f2ng ch\u1ea3y trong \u1ed1ng d\u1eabn.<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[132],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v15.4 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Hi\u1ec7u \u1ee8ng Venturi trong D\u00f2ng Ch\u1ea3y Ch\u1ea5t L\u1ecfng L\u00e0 G\u00ec?<\/title>\n<meta name=\"description\" content=\"Hi\u1ec7u \u1ee8ng Venturi trong D\u00f2ng Ch\u1ea3y Ch\u1ea5t L\u1ecfng L\u00e0 G\u00ec? 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