{"id":708591,"date":"2024-09-04T23:17:03","date_gmt":"2024-09-04T22:17:03","guid":{"rendered":"https:\/\/www.thermal-engineering.org\/?p=708591"},"modified":"2024-09-04T23:17:03","modified_gmt":"2024-09-04T22:17:03","slug":"dong-chay-on-dinh-va-roi-loan-la-gi","status":"publish","type":"post","link":"https:\/\/www.thermal-engineering.org\/vi\/dong-chay-on-dinh-va-roi-loan-la-gi\/","title":{"rendered":"D\u00f2ng Ch\u1ea3y \u1ed4n \u0110\u1ecbnh V\u00e0 R\u1ed1i Lo\u1ea1n L\u00e0 G\u00ec?"},"content":{"rendered":"<p class=\"sidekick\">D\u00f2ng ch\u1ea3y \u1ed5n \u0111\u1ecbnh v\u00e0 r\u1ed1i lo\u1ea1n l\u00e0 g\u00ec? T\u00ecm hi\u1ec3u s\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa d\u00f2ng ch\u1ea3y \u1ed5n \u0111\u1ecbnh v\u00e0 d\u00f2ng ch\u1ea3y r\u1ed1i lo\u1ea1n, c\u00e1ch th\u1ee9c ho\u1ea1t \u0111\u1ed9ng v\u00e0 \u1ee9ng d\u1ee5ng trong k\u1ef9 thu\u1eadt nhi\u1ec7t.<\/p>\n<p><img src=\"https:\/\/www.thermal-engineering.org\/wp-content\/uploads\/2024\/07\/dong_chay_on_dinh_va_roi_loan_la_gi.png\" alt=\"D\u00f2ng Ch\u1ea3y \u1ed4n \u0110\u1ecbnh V\u00e0 R\u1ed1i Lo\u1ea1n L\u00e0 G\u00ec?\" style=\"display: block; margin-left: auto; margin-right: auto;\"\/><\/p>\n<h2>D\u00f2ng Ch\u1ea3y \u1ed4n \u0110\u1ecbnh V\u00e0 R\u1ed1i Lo\u1ea1n L\u00e0 G\u00ec?<\/h2>\n<p>Trong ng\u00e0nh k\u1ef9 thu\u1eadt nhi\u1ec7t, hi\u1ec3u bi\u1ebft v\u1ec1 d\u00f2ng ch\u1ea3y c\u1ee7a ch\u1ea5t l\u1ecfng c\u00f3 vai tr\u00f2 r\u1ea5t quan tr\u1ecdng. D\u00f2ng ch\u1ea3y c\u1ee7a ch\u1ea5t l\u1ecfng c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c ph\u00e2n lo\u1ea1i th\u00e0nh hai lo\u1ea1i ch\u00ednh: d\u00f2ng ch\u1ea3y \u1ed5n \u0111\u1ecbnh v\u00e0 d\u00f2ng ch\u1ea3y r\u1ed1i lo\u1ea1n. S\u1ef1 ph\u00e2n bi\u1ec7t n\u00e0y gi\u00fap ch\u00fang ta hi\u1ec3u r\u00f5 h\u01a1n v\u1ec1 c\u00e1ch h\u00e0nh x\u1eed c\u1ee7a ch\u1ea5t l\u1ecfng v\u00e0 kh\u00ed trong c\u00e1c \u1ee9ng d\u1ee5ng th\u1ef1c t\u1ebf.<\/p>\n<h2>D\u00f2ng Ch\u1ea3y \u1ed4n \u0110\u1ecbnh<\/h2>\n<p>D\u00f2ng ch\u1ea3y \u1ed5n \u0111\u1ecbnh, hay c\u00f2n g\u1ecdi l\u00e0 d\u00f2ng ch\u1ea3y t\u1ea7ng, l\u00e0 lo\u1ea1i d\u00f2ng ch\u1ea3y m\u00e0 ch\u1ea5t l\u1ecfng di chuy\u1ec3n m\u1ed9t c\u00e1ch \u0111\u1ec1u \u0111\u1eb7n v\u00e0 c\u00f3 t\u1ed5 ch\u1ee9c. Trong d\u00f2ng ch\u1ea3y n\u00e0y, c\u00e1c l\u1edbp ch\u1ea5t l\u1ecfng di chuy\u1ec3n song song v\u1edbi nhau m\u00e0 kh\u00f4ng tr\u1ed9n l\u1eabn.<\/p>\n<ul>\n<li><strong>T\u00ednh ch\u1ea5t:<\/strong> D\u00f2ng ch\u1ea3y \u1ed5n \u0111\u1ecbnh c\u00f3 v\u1eadn t\u1ed1c v\u00e0 \u00e1p su\u1ea5t kh\u00f4ng \u0111\u1ed5i theo th\u1eddi gian.<\/li>\n<li><strong>\u0110\u1eb7c \u0111i\u1ec3m:<\/strong> C\u00e1c \u0111\u01b0\u1eddng d\u00f2ng ch\u1ea3y kh\u00f4ng giao nhau, t\u1ea1o n\u00ean m\u1ed9t m\u00f4 h\u00ecnh d\u00f2ng ch\u1ea3y m\u01b0\u1ee3t m\u00e0.<\/li>\n<li><strong>V\u00ed d\u1ee5:<\/strong> D\u00f2ng ch\u1ea3y c\u1ee7a m\u00e1u trong c\u00e1c m\u1ea1ch m\u00e1u nh\u1ecf ho\u1eb7c d\u00f2ng ch\u1ea3y qua m\u1ed9t \u1ed1ng d\u1eabn n\u01b0\u1edbc nh\u1ecf.<\/li>\n<li><strong>Ph\u01b0\u01a1ng tr\u00ecnh:<\/strong> S\u1ed1 Reynolds (Re) th\u1ea5p (Re < 2000) th\u01b0\u1eddng li\u00ean quan \u0111\u1ebfn d\u00f2ng ch\u1ea3y \u1ed5n \u0111\u1ecbnh.<\/li>\n<\/ul>\n<h2>D\u00f2ng Ch\u1ea3y R\u1ed1i Lo\u1ea1n<\/h2>\n<p>D\u00f2ng ch\u1ea3y r\u1ed1i lo\u1ea1n, hay d\u00f2ng ch\u1ea3y nhi\u1ec5u \u0111\u1ed9ng, l\u00e0 lo\u1ea1i d\u00f2ng ch\u1ea3y m\u00e0 c\u00e1c ph\u1ea7n t\u1eed ch\u1ea5t l\u1ecfng di chuy\u1ec3n m\u1ed9t c\u00e1ch ng\u1eabu nhi\u00ean v\u00e0 xo\u00e1y. Trong d\u00f2ng ch\u1ea3y n\u00e0y, c\u00e1c l\u1edbp ch\u1ea5t l\u1ecfng kh\u00f4ng c\u00f2n di chuy\u1ec3n song song n\u1eefa.<\/p>\n<ul>\n<li><strong>T\u00ednh ch\u1ea5t:<\/strong> D\u00f2ng ch\u1ea3y r\u1ed1i lo\u1ea1n c\u00f3 s\u1ef1 thay \u0111\u1ed5i li\u00ean t\u1ee5c v\u1ec1 v\u1eadn t\u1ed1c v\u00e0 \u00e1p su\u1ea5t theo th\u1eddi gian.<\/li>\n<li><strong>\u0110\u1eb7c \u0111i\u1ec3m:<\/strong> C\u00e1c \u0111\u01b0\u1eddng d\u00f2ng giao nhau v\u00e0 t\u1ea1o n\u00ean m\u1ed9t m\u00f4 h\u00ecnh d\u00f2ng ch\u1ea3y ph\u1ee9c t\u1ea1p v\u00e0 h\u1ed7n lo\u1ea1n.<\/li>\n<li><strong>V\u00ed d\u1ee5:<\/strong> D\u00f2ng ch\u1ea3y c\u1ee7a n\u01b0\u1edbc trong m\u1ed9t c\u00e1i ao s\u1ee5c s\u00f4i ho\u1eb7c d\u00f2ng kh\u00ed trong m\u1ed9t chi\u1ebfc xe h\u01a1i \u0111ang ch\u1ea1y.<\/li>\n<li><strong>Ph\u01b0\u01a1ng tr\u00ecnh:<\/strong> S\u1ed1 Reynolds cao (Re > 4000) th\u01b0\u1eddng li\u00ean quan \u0111\u1ebfn d\u00f2ng ch\u1ea3y r\u1ed1i lo\u1ea1n.<\/li>\n<\/ul>\n<h2>S\u1ed1 Reynolds<\/h2>\n<p>S\u1ed1 Reynolds (Re) l\u00e0 m\u1ed9t ch\u1ec9 s\u1ed1 v\u00f4 h\u01b0\u1edbng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 d\u1ef1 \u0111o\u00e1n ki\u1ec3u d\u00f2ng ch\u1ea3y c\u1ee7a ch\u1ea5t l\u1ecfng. N\u00f3 \u0111\u01b0\u1ee3c t\u00ednh b\u1eb1ng c\u00f4ng th\u1ee9c:<\/p>\n<p><em>Re = \\(\\frac{\\rho * V * L}{\\mu}\\)<\/em><\/p>\n<ol>\n<li><strong>\\(\\rho\\) (rho):<\/strong> M\u1eadt \u0111\u1ed9 c\u1ee7a ch\u1ea5t l\u1ecfng.<\/li>\n<li><strong>V:<\/strong> V\u1eadn t\u1ed1c \u0111\u1eb7c tr\u01b0ng c\u1ee7a d\u00f2ng ch\u1ea3y.<\/li>\n<li><strong>L:<\/strong> K\u00edch th\u01b0\u1edbc \u0111\u1eb7c tr\u01b0ng (v\u00ed d\u1ee5: \u0111\u01b0\u1eddng k\u00ednh c\u1ee7a \u1ed1ng).<\/li>\n<li><strong>\\(\\mu\\) (mu):<\/strong> \u0110\u1ed9 nh\u1edbt \u0111\u1ed9ng h\u1ecdc c\u1ee7a ch\u1ea5t l\u1ecfng.<\/li>\n<\/ol>\n<p>D\u1ef1a v\u00e0o s\u1ed1 Reynolds, ch\u00fang ta c\u00f3 th\u1ec3 ph\u00e2n bi\u1ec7t gi\u1eefa d\u00f2ng ch\u1ea3y \u1ed5n \u0111\u1ecbnh v\u00e0 d\u00f2ng ch\u1ea3y r\u1ed1i lo\u1ea1n:<\/p>\n<ul>\n<li><strong>D\u00f2ng ch\u1ea3y \u1ed5n \u0111\u1ecbnh:<\/strong> Re < 2000<\/li>\n<li><strong>D\u00f2ng ch\u1ea3y chuy\u1ec3n ti\u1ebfp:<\/strong> 2000 < Re < 4000<\/li>\n<li><strong>D\u00f2ng ch\u1ea3y r\u1ed1i lo\u1ea1n:<\/strong> Re > 4000<\/li>\n<\/ul>\n<h2>K\u1ebft Lu\u1eadn<\/h2>\n<p>Hi\u1ec3u r\u00f5 s\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa d\u00f2ng ch\u1ea3y \u1ed5n \u0111\u1ecbnh v\u00e0 r\u1ed1i lo\u1ea1n kh\u00f4ng ch\u1ec9 quan tr\u1ecdng trong l\u0129nh v\u1ef1c k\u1ef9 thu\u1eadt nhi\u1ec7t m\u00e0 c\u00f2n c\u00f3 \u1ee9ng d\u1ee5ng r\u1ed9ng r\u00e3i trong c\u00e1c ng\u00e0nh khoa h\u1ecdc v\u00e0 k\u1ef9 thu\u1eadt kh\u00e1c. Vi\u1ec7c ph\u00e2n bi\u1ec7t n\u00e0y gi\u00fap c\u00e1c k\u1ef9 s\u01b0 v\u00e0 nh\u00e0 khoa h\u1ecdc thi\u1ebft k\u1ebf v\u00e0 t\u1ed1i \u01b0u h\u00f3a h\u1ec7 th\u1ed1ng v\u1eadn h\u00e0nh ch\u1ea5t l\u1ecfng m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3 v\u00e0 an to\u00e0n.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>D\u00f2ng ch\u1ea3y \u1ed5n \u0111\u1ecbnh v\u00e0 r\u1ed1i lo\u1ea1n l\u00e0 g\u00ec? T\u00ecm hi\u1ec3u s\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa d\u00f2ng ch\u1ea3y \u1ed5n \u0111\u1ecbnh v\u00e0 d\u00f2ng ch\u1ea3y r\u1ed1i lo\u1ea1n, c\u00e1ch th\u1ee9c ho\u1ea1t \u0111\u1ed9ng v\u00e0 \u1ee9ng d\u1ee5ng trong k\u1ef9 thu\u1eadt nhi\u1ec7t.<\/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>D\u00f2ng Ch\u1ea3y \u1ed4n \u0110\u1ecbnh V\u00e0 R\u1ed1i Lo\u1ea1n L\u00e0 G\u00ec?<\/title>\n<meta name=\"description\" content=\"D\u00f2ng ch\u1ea3y \u1ed5n \u0111\u1ecbnh v\u00e0 r\u1ed1i lo\u1ea1n l\u00e0 g\u00ec? T\u00ecm hi\u1ec3u s\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa d\u00f2ng ch\u1ea3y \u1ed5n \u0111\u1ecbnh v\u00e0 d\u00f2ng ch\u1ea3y r\u1ed1i lo\u1ea1n, c\u00e1ch th\u1ee9c ho\u1ea1t \u0111\u1ed9ng v\u00e0 \u1ee9ng d\u1ee5ng trong k\u1ef9 thu\u1eadt nhi\u1ec7t.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.thermal-engineering.org\/vi\/dong-chay-on-dinh-va-roi-loan-la-gi\/\" \/>\n<meta property=\"og:locale\" content=\"vi_VN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"D\u00f2ng Ch\u1ea3y \u1ed4n \u0110\u1ecbnh V\u00e0 R\u1ed1i Lo\u1ea1n L\u00e0 G\u00ec?\" \/>\n<meta property=\"og:description\" content=\"D\u00f2ng ch\u1ea3y \u1ed5n \u0111\u1ecbnh v\u00e0 r\u1ed1i lo\u1ea1n l\u00e0 g\u00ec? T\u00ecm hi\u1ec3u s\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa d\u00f2ng ch\u1ea3y \u1ed5n \u0111\u1ecbnh v\u00e0 d\u00f2ng ch\u1ea3y r\u1ed1i lo\u1ea1n, c\u00e1ch th\u1ee9c ho\u1ea1t \u0111\u1ed9ng v\u00e0 \u1ee9ng d\u1ee5ng trong k\u1ef9 thu\u1eadt nhi\u1ec7t.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.thermal-engineering.org\/vi\/dong-chay-on-dinh-va-roi-loan-la-gi\/\" \/>\n<meta property=\"og:site_name\" content=\"Thermal Engineering\" \/>\n<meta property=\"article:published_time\" content=\"2024-09-04T22:17:03+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.thermal-engineering.org\/wp-content\/uploads\/2024\/07\/dong_chay_on_dinh_va_roi_loan_la_gi.png\" \/>\n<meta name=\"twitter:card\" content=\"summary\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\">\n\t<meta name=\"twitter:data1\" content=\"Nick Connor\">\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\">\n\t<meta name=\"twitter:data2\" content=\"3 minutes\">\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebSite\",\"@id\":\"https:\/\/www.thermal-engineering.org\/fr\/#website\",\"url\":\"https:\/\/www.thermal-engineering.org\/fr\/\",\"name\":\"Thermal Engineering\",\"description\":\"\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":\"https:\/\/www.thermal-engineering.org\/fr\/?s={search_term_string}\",\"query-input\":\"required name=search_term_string\"}],\"inLanguage\":\"vi-VN\"},{\"@type\":\"ImageObject\",\"@id\":\"https:\/\/www.thermal-engineering.org\/vi\/dong-chay-on-dinh-va-roi-loan-la-gi\/#primaryimage\",\"inLanguage\":\"vi-VN\",\"url\":\"https:\/\/www.thermal-engineering.org\/wp-content\/uploads\/2024\/07\/dong_chay_on_dinh_va_roi_loan_la_gi.png\",\"width\":1000,\"height\":1000,\"caption\":\"D\\u00f2ng Ch\\u1ea3y \\u1ed4n \\u0110\\u1ecbnh V\\u00e0 R\\u1ed1i Lo\\u1ea1n L\\u00e0 G\\u00ec?\"},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.thermal-engineering.org\/vi\/dong-chay-on-dinh-va-roi-loan-la-gi\/#webpage\",\"url\":\"https:\/\/www.thermal-engineering.org\/vi\/dong-chay-on-dinh-va-roi-loan-la-gi\/\",\"name\":\"D\\u00f2ng Ch\\u1ea3y \\u1ed4n \\u0110\\u1ecbnh V\\u00e0 R\\u1ed1i Lo\\u1ea1n L\\u00e0 G\\u00ec?\",\"isPartOf\":{\"@id\":\"https:\/\/www.thermal-engineering.org\/fr\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/www.thermal-engineering.org\/vi\/dong-chay-on-dinh-va-roi-loan-la-gi\/#primaryimage\"},\"datePublished\":\"2024-09-04T22:17:03+00:00\",\"dateModified\":\"2024-09-04T22:17:03+00:00\",\"author\":{\"@id\":\"https:\/\/www.thermal-engineering.org\/fr\/#\/schema\/person\/e8c544db9afedaec8574d6464f9398bb\"},\"description\":\"D\\u00f2ng ch\\u1ea3y \\u1ed5n \\u0111\\u1ecbnh v\\u00e0 r\\u1ed1i lo\\u1ea1n l\\u00e0 g\\u00ec? T\\u00ecm hi\\u1ec3u s\\u1ef1 kh\\u00e1c bi\\u1ec7t gi\\u1eefa d\\u00f2ng ch\\u1ea3y \\u1ed5n \\u0111\\u1ecbnh v\\u00e0 d\\u00f2ng ch\\u1ea3y r\\u1ed1i lo\\u1ea1n, c\\u00e1ch th\\u1ee9c ho\\u1ea1t \\u0111\\u1ed9ng v\\u00e0 \\u1ee9ng d\\u1ee5ng trong k\\u1ef9 thu\\u1eadt nhi\\u1ec7t.\",\"inLanguage\":\"vi-VN\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/www.thermal-engineering.org\/vi\/dong-chay-on-dinh-va-roi-loan-la-gi\/\"]}]},{\"@type\":\"Person\",\"@id\":\"https:\/\/www.thermal-engineering.org\/fr\/#\/schema\/person\/e8c544db9afedaec8574d6464f9398bb\",\"name\":\"Nick Connor\",\"image\":{\"@type\":\"ImageObject\",\"@id\":\"https:\/\/www.thermal-engineering.org\/fr\/#personlogo\",\"inLanguage\":\"vi-VN\",\"url\":\"https:\/\/secure.gravatar.com\/avatar\/84c0dec310b44b65da29dc9df6925239?s=96&d=mm&r=g\",\"caption\":\"Nick Connor\"}}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","_links":{"self":[{"href":"https:\/\/www.thermal-engineering.org\/vi\/wp-json\/wp\/v2\/posts\/708591"}],"collection":[{"href":"https:\/\/www.thermal-engineering.org\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.thermal-engineering.org\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.thermal-engineering.org\/vi\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.thermal-engineering.org\/vi\/wp-json\/wp\/v2\/comments?post=708591"}],"version-history":[{"count":0,"href":"https:\/\/www.thermal-engineering.org\/vi\/wp-json\/wp\/v2\/posts\/708591\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.thermal-engineering.org\/vi\/wp-json\/wp\/v2\/media?parent=708591"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.thermal-engineering.org\/vi\/wp-json\/wp\/v2\/categories?post=708591"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.thermal-engineering.org\/vi\/wp-json\/wp\/v2\/tags?post=708591"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}