{"id":695317,"date":"2024-10-30T19:52:48","date_gmt":"2024-10-30T18:52:48","guid":{"rendered":"https:\/\/www.thermal-engineering.org\/?p=695317"},"modified":"2024-10-30T19:52:48","modified_gmt":"2024-10-30T18:52:48","slug":"ky-thuat-do-van-toc-bang-anh-hat","status":"publish","type":"post","link":"https:\/\/www.thermal-engineering.org\/vi\/ky-thuat-do-van-toc-bang-anh-hat\/","title":{"rendered":"K\u1ef9 thu\u1eadt \u0111o v\u1eadn t\u1ed1c b\u1eb1ng \u1ea3nh h\u1ea1t"},"content":{"rendered":"<p class=\"sidekick\">K\u1ef9 thu\u1eadt \u0111o v\u1eadn t\u1ed1c b\u1eb1ng \u1ea3nh h\u1ea1t: Ph\u01b0\u01a1ng ph\u00e1p s\u1eed d\u1ee5ng h\u00ecnh \u1ea3nh h\u1ea1t \u0111\u1ec3 \u0111o l\u01b0\u1eddng v\u00e0 ph\u00e2n t\u00edch v\u1eadn t\u1ed1c d\u00f2ng ch\u1ea3y trong c\u00e1c h\u1ec7 th\u1ed1ng nhi\u1ec7t k\u1ef9 thu\u1eadt.<\/p>\n<p><img src=\"https:\/\/www.thermal-engineering.org\/wp-content\/uploads\/2024\/07\/ky_thuat_do_van_toc_bang_anh_hat.png\" alt=\"K\u1ef9 thu\u1eadt \u0111o v\u1eadn t\u1ed1c b\u1eb1ng \u1ea3nh h\u1ea1t\" style=\"display: block; margin-left: auto; margin-right: auto;\"\/><\/p>\n<h2>K\u1ef9 thu\u1eadt \u0111o v\u1eadn t\u1ed1c b\u1eb1ng \u1ea3nh h\u1ea1t<\/h2>\n<p>Trong ng\u00e0nh k\u1ef9 thu\u1eadt nhi\u1ec7t, m\u1ed9t trong nh\u1eefng ph\u01b0\u01a1ng ph\u00e1p quan tr\u1ecdng \u0111\u1ec3 \u0111o l\u01b0\u1eddng v\u00e0 ph\u00e2n t\u00edch lu\u1ed3ng kh\u00ed v\u00e0 ch\u1ea5t l\u1ecfng l\u00e0 k\u1ef9 thu\u1eadt \u0111o v\u1eadn t\u1ed1c b\u1eb1ng \u1ea3nh h\u1ea1t (Particle Image Velocimetry &#8211; PIV). Ph\u01b0\u01a1ng ph\u00e1p n\u00e0y cho ph\u00e9p ta kh\u1ea3o s\u00e1t c\u00e1c \u0111\u1eb7c t\u00ednh c\u1ee7a d\u00f2ng ch\u1ea3y m\u1ed9t c\u00e1ch chi ti\u1ebft v\u00e0 ch\u00ednh x\u00e1c.<\/p>\n<h2>Nguy\u00ean l\u00fd c\u01a1 b\u1ea3n c\u1ee7a PIV<\/h2>\n<p>K\u1ef9 thu\u1eadt PIV s\u1eed d\u1ee5ng c\u00e1c h\u1ea1t si\u00eau nh\u1ecf \u0111\u01b0\u1ee3c th\u1ea3 v\u00e0o d\u00f2ng ch\u1ea3y. Nh\u1eefng h\u1ea1t n\u00e0y ph\u1ea3i \u0111\u1ee7 nh\u1eb9 \u0111\u1ec3 ch\u00fang c\u00f3 th\u1ec3 chuy\u1ec3n \u0111\u1ed9ng m\u1ed9t c\u00e1ch t\u1ef1 do, theo s\u00e1t d\u00f2ng ch\u1ea3y m\u00e0 kh\u00f4ng \u1ea3nh h\u01b0\u1edfng t\u1edbi t\u00ednh ch\u1ea5t c\u1ee7a d\u00f2ng. Khi chi\u1ebfu s\u00e1ng b\u1eb1ng laser ho\u1eb7c \u0111\u00e8n LED m\u1ea1nh, c\u00e1c h\u1ea1t n\u00e0y s\u1ebd ph\u1ea3n chi\u1ebfu \u00e1nh s\u00e1ng v\u00e0 \u0111\u01b0\u1ee3c ghi l\u1ea1i b\u1eb1ng h\u1ec7 th\u1ed1ng camera ch\u1ee5p nhanh.<\/p>\n<ul>\n<li>Tr\u01b0\u1edbc h\u1ebft, d\u00f2ng ch\u1ea3y s\u1ebd \u0111\u01b0\u1ee3c chi\u1ebfu s\u00e1ng b\u1edfi m\u1ed9t ch\u00f9m tia laser ho\u1eb7c m\u1ed9t ngu\u1ed3n s\u00e1ng ph\u00f9 h\u1ee3p.<\/li>\n<li>C\u00e1c h\u1ea1t ph\u1ea3n chi\u1ebfu \u00e1nh s\u00e1ng v\u00e0 h\u1ec7 th\u1ed1ng camera ghi l\u1ea1i h\u00ecnh \u1ea3nh t\u1ea1i nhi\u1ec1u th\u1eddi \u0111i\u1ec3m kh\u00e1c nhau.<\/li>\n<li>B\u1eb1ng c\u00e1ch so s\u00e1nh c\u00e1c v\u1ecb tr\u00ed c\u1ee7a c\u00e1c h\u1ea1t trong hai b\u1ee9c \u1ea3nh li\u00ean ti\u1ebfp, ta c\u00f3 th\u1ec3 x\u00e1c \u0111\u1ecbnh \u0111\u01b0\u1ee3c v\u1eadn t\u1ed1c c\u1ee7a d\u00f2ng ch\u1ea3y t\u1ea1i m\u1ed7i \u0111i\u1ec3m.<\/li>\n<\/ul>\n<h2>C\u00f4ng c\u1ee5 v\u00e0 thi\u1ebft b\u1ecb<\/h2>\n<ul>\n<li><b>H\u1ea1t d\u1ea5u v\u1ebft:<\/b> L\u00e0 c\u00e1c h\u1ea1t r\u1ea5t nh\u1ecf v\u00e0 d\u1ec5 d\u00e0ng theo s\u00e1t d\u00f2ng ch\u1ea3y. Th\u01b0\u1eddng l\u00e0 c\u00e1c h\u1ea1t c\u00f3 k\u00edch th\u01b0\u1edbc t\u1eeb v\u00e0i micromet \u0111\u1ebfn v\u00e0i ch\u1ee5c micromet.<\/li>\n<li><b>Laser:<\/b> M\u1ed9t ngu\u1ed3n s\u00e1ng m\u1ea1nh th\u01b0\u1eddng s\u1eed d\u1ee5ng laser do kh\u1ea3 n\u0103ng cung c\u1ea5p ch\u00f9m s\u00e1ng c\u00f3 c\u01b0\u1eddng \u0111\u1ed9 cao v\u00e0 ph\u00e2n b\u1ed1 \u0111\u1ed3ng \u0111\u1ec1u.<\/li>\n<li><b>Camera cao t\u1ed1c:<\/b> Camera c\u00f3 th\u1ec3 ch\u1ee5p h\u00e0ng ngh\u00ecn b\u1ee9c \u1ea3nh m\u1ed7i gi\u00e2y, \u0111\u1ea3m b\u1ea3o ghi l\u1ea1i c\u00e1c chuy\u1ec3n \u0111\u1ed9ng nhanh c\u1ee7a h\u1ea1t.<\/li>\n<li><b>Ph\u1ea7n m\u1ec1m ph\u00e2n t\u00edch h\u00ecnh \u1ea3nh:<\/b> C\u00e1c ph\u1ea7n m\u1ec1m n\u00e0y gi\u00fap x\u1eed l\u00fd v\u00e0 ph\u00e2n t\u00edch h\u00ecnh \u1ea3nh, t\u00ednh to\u00e1n v\u1eadn t\u1ed1c c\u1ee7a c\u00e1c h\u1ea1t v\u00e0 t\u1eeb \u0111\u00f3 x\u00e1c \u0111\u1ecbnh \u0111\u01b0\u1ee3c v\u1eadn t\u1ed1c c\u1ee7a d\u00f2ng ch\u1ea3y.<\/li>\n<\/ul>\n<h2>Ph\u01b0\u01a1ng ph\u00e1p th\u1ef1c hi\u1ec7n<\/h2>\n<ol>\n<li>Ch\u1ecdn l\u1ef1a v\u00e0 pha ch\u1ebf c\u00e1c h\u1ea1t d\u1ea5u v\u1ebft.<\/li>\n<li>Th\u00eam c\u00e1c h\u1ea1t v\u00e0o d\u00f2ng ch\u1ea3y c\u1ea7n \u0111o.<\/li>\n<li>S\u1eed d\u1ee5ng laser ho\u1eb7c ngu\u1ed3n s\u00e1ng m\u1ea1nh \u0111\u1ec3 chi\u1ebfu s\u00e1ng d\u00f2ng ch\u1ea3y.<\/li>\n<li>Ch\u1ee5p \u1ea3nh d\u00f2ng ch\u1ea3y t\u1ea1i c\u00e1c th\u1eddi \u0111i\u1ec3m li\u00ean ti\u1ebfp b\u1eb1ng camera cao t\u1ed1c.<\/li>\n<li>S\u1eed d\u1ee5ng ph\u1ea7n m\u1ec1m \u0111\u1ec3 x\u1eed l\u00fd v\u00e0 ph\u00e2n t\u00edch h\u00ecnh \u1ea3nh, x\u00e1c \u0111\u1ecbnh v\u1ecb tr\u00ed v\u00e0 v\u1eadn t\u1ed1c c\u1ee7a c\u00e1c h\u1ea1t.<\/li>\n<\/ol>\n<h2>\u01afu \u0111i\u1ec3m c\u1ee7a k\u1ef9 thu\u1eadt PIV<\/h2>\n<ul>\n<li><b>\u0110\u1ed9 ch\u00ednh x\u00e1c cao:<\/b> PIV cho ph\u00e9p \u0111o l\u01b0\u1eddng v\u1eadn t\u1ed1c t\u1ea1i nhi\u1ec1u \u0111i\u1ec3m trong c\u00f9ng m\u1ed9t th\u1eddi \u0111i\u1ec3m, cung c\u1ea5p c\u00e1i nh\u00ecn to\u00e0n di\u1ec7n v\u1ec1 d\u00f2ng ch\u1ea3y.<\/li>\n<li><b>Kh\u00f4ng x\u00e2m l\u1ea5n:<\/b> C\u00e1c h\u1ea1t d\u1ea5u v\u1ebft kh\u00f4ng l\u00e0m \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn d\u00f2ng ch\u1ea3y, gi\u00fap duy tr\u00ec t\u00ednh ch\u00e2n th\u1ef1c c\u1ee7a c\u00e1c \u0111\u1eb7c t\u00ednh d\u00f2ng ch\u1ea3y.<\/li>\n<li><b>Ph\u00e2n t\u00edch \u0111a chi\u1ec1u:<\/b> PIV c\u00f3 th\u1ec3 \u00e1p d\u1ee5ng trong nhi\u1ec1u m\u00f4i tr\u01b0\u1eddng kh\u00e1c nhau, t\u1eeb kh\u00f4ng kh\u00ed \u0111\u1ebfn ch\u1ea5t l\u1ecfng, v\u00e0 trong c\u1ea3 c\u00e1c d\u00f2ng ch\u1ea3y hai v\u00e0 ba chi\u1ec1u.<\/li>\n<\/ul>\n<h2>K\u1ebft lu\u1eadn<\/h2>\n<p>K\u1ef9 thu\u1eadt \u0111o v\u1eadn t\u1ed1c b\u1eb1ng \u1ea3nh h\u1ea1t l\u00e0 m\u1ed9t ph\u01b0\u01a1ng ph\u00e1p hi\u1ec7u qu\u1ea3 v\u00e0 ch\u00ednh x\u00e1c trong l\u0129nh v\u1ef1c k\u1ef9 thu\u1eadt nhi\u1ec7t. B\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng c\u00e1c c\u00f4ng ngh\u1ec7 hi\u1ec7n \u0111\u1ea1i nh\u01b0 laser v\u00e0 camera cao t\u1ed1c, PIV gi\u00fap c\u00e1c nh\u00e0 nghi\u00ean c\u1ee9u v\u00e0 k\u1ef9 s\u01b0 hi\u1ec3u r\u00f5 h\u01a1n v\u1ec1 c\u00e1c \u0111\u1eb7c t\u00ednh c\u1ee7a d\u00f2ng ch\u1ea3y, t\u1eeb \u0111\u00f3 c\u1ea3i thi\u1ec7n thi\u1ebft k\u1ebf h\u1ec7 th\u1ed1ng v\u00e0 n\u00e2ng cao hi\u1ec7u su\u1ea5t l\u00e0m vi\u1ec7c.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>K\u1ef9 thu\u1eadt \u0111o v\u1eadn t\u1ed1c b\u1eb1ng \u1ea3nh h\u1ea1t: Ph\u01b0\u01a1ng ph\u00e1p s\u1eed d\u1ee5ng h\u00ecnh \u1ea3nh h\u1ea1t \u0111\u1ec3 \u0111o l\u01b0\u1eddng v\u00e0 ph\u00e2n t\u00edch v\u1eadn t\u1ed1c d\u00f2ng ch\u1ea3y trong c\u00e1c h\u1ec7 th\u1ed1ng nhi\u1ec7t k\u1ef9 thu\u1eadt.<\/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>K\u1ef9 thu\u1eadt \u0111o v\u1eadn t\u1ed1c b\u1eb1ng \u1ea3nh h\u1ea1t<\/title>\n<meta name=\"description\" content=\"K\u1ef9 thu\u1eadt \u0111o v\u1eadn t\u1ed1c b\u1eb1ng \u1ea3nh h\u1ea1t: Ph\u01b0\u01a1ng ph\u00e1p s\u1eed d\u1ee5ng h\u00ecnh \u1ea3nh h\u1ea1t \u0111\u1ec3 \u0111o l\u01b0\u1eddng v\u00e0 ph\u00e2n t\u00edch v\u1eadn t\u1ed1c d\u00f2ng ch\u1ea3y trong c\u00e1c h\u1ec7 th\u1ed1ng nhi\u1ec7t k\u1ef9 thu\u1eadt.\" \/>\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\/ky-thuat-do-van-toc-bang-anh-hat\/\" \/>\n<meta property=\"og:locale\" content=\"vi_VN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"K\u1ef9 thu\u1eadt \u0111o v\u1eadn t\u1ed1c b\u1eb1ng \u1ea3nh h\u1ea1t\" \/>\n<meta property=\"og:description\" content=\"K\u1ef9 thu\u1eadt \u0111o v\u1eadn t\u1ed1c b\u1eb1ng \u1ea3nh h\u1ea1t: Ph\u01b0\u01a1ng ph\u00e1p s\u1eed d\u1ee5ng h\u00ecnh \u1ea3nh h\u1ea1t \u0111\u1ec3 \u0111o l\u01b0\u1eddng v\u00e0 ph\u00e2n t\u00edch v\u1eadn t\u1ed1c d\u00f2ng ch\u1ea3y trong c\u00e1c h\u1ec7 th\u1ed1ng nhi\u1ec7t k\u1ef9 thu\u1eadt.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.thermal-engineering.org\/vi\/ky-thuat-do-van-toc-bang-anh-hat\/\" \/>\n<meta property=\"og:site_name\" content=\"Thermal Engineering\" \/>\n<meta property=\"article:published_time\" content=\"2024-10-30T18:52:48+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.thermal-engineering.org\/wp-content\/uploads\/2024\/07\/ky_thuat_do_van_toc_bang_anh_hat.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=\"4 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\/ky-thuat-do-van-toc-bang-anh-hat\/#primaryimage\",\"inLanguage\":\"vi-VN\",\"url\":\"https:\/\/www.thermal-engineering.org\/wp-content\/uploads\/2024\/07\/ky_thuat_do_van_toc_bang_anh_hat.png\",\"width\":1000,\"height\":1000,\"caption\":\"K\\u1ef9 thu\\u1eadt \\u0111o v\\u1eadn t\\u1ed1c b\\u1eb1ng \\u1ea3nh h\\u1ea1t\"},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.thermal-engineering.org\/vi\/ky-thuat-do-van-toc-bang-anh-hat\/#webpage\",\"url\":\"https:\/\/www.thermal-engineering.org\/vi\/ky-thuat-do-van-toc-bang-anh-hat\/\",\"name\":\"K\\u1ef9 thu\\u1eadt \\u0111o v\\u1eadn t\\u1ed1c b\\u1eb1ng \\u1ea3nh h\\u1ea1t\",\"isPartOf\":{\"@id\":\"https:\/\/www.thermal-engineering.org\/fr\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/www.thermal-engineering.org\/vi\/ky-thuat-do-van-toc-bang-anh-hat\/#primaryimage\"},\"datePublished\":\"2024-10-30T18:52:48+00:00\",\"dateModified\":\"2024-10-30T18:52:48+00:00\",\"author\":{\"@id\":\"https:\/\/www.thermal-engineering.org\/fr\/#\/schema\/person\/e8c544db9afedaec8574d6464f9398bb\"},\"description\":\"K\\u1ef9 thu\\u1eadt \\u0111o v\\u1eadn t\\u1ed1c b\\u1eb1ng \\u1ea3nh h\\u1ea1t: Ph\\u01b0\\u01a1ng ph\\u00e1p s\\u1eed d\\u1ee5ng h\\u00ecnh \\u1ea3nh h\\u1ea1t \\u0111\\u1ec3 \\u0111o l\\u01b0\\u1eddng v\\u00e0 ph\\u00e2n t\\u00edch v\\u1eadn t\\u1ed1c d\\u00f2ng ch\\u1ea3y trong c\\u00e1c h\\u1ec7 th\\u1ed1ng nhi\\u1ec7t k\\u1ef9 thu\\u1eadt.\",\"inLanguage\":\"vi-VN\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/www.thermal-engineering.org\/vi\/ky-thuat-do-van-toc-bang-anh-hat\/\"]}]},{\"@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\/695317"}],"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=695317"}],"version-history":[{"count":0,"href":"https:\/\/www.thermal-engineering.org\/vi\/wp-json\/wp\/v2\/posts\/695317\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.thermal-engineering.org\/vi\/wp-json\/wp\/v2\/media?parent=695317"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.thermal-engineering.org\/vi\/wp-json\/wp\/v2\/categories?post=695317"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.thermal-engineering.org\/vi\/wp-json\/wp\/v2\/tags?post=695317"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}