{"id":345,"date":"2014-09-09T23:43:52","date_gmt":"2014-09-10T06:43:52","guid":{"rendered":"http:\/\/nuclearprojects.com\/blog\/?p=345"},"modified":"2014-09-11T21:46:33","modified_gmt":"2014-09-12T04:46:33","slug":"schlieren-flow-visualization","status":"publish","type":"post","link":"https:\/\/nuclearprojects.com\/blog\/schlieren-flow-visualization\/","title":{"rendered":"Schlieren Flow Visualization"},"content":{"rendered":"<p>A really neat technique for visualizing the flow of fluids is called <strong>Schlieren flow visualization <\/strong>(<em>pronounced: sh-lear-in<\/em>). By using either special mirrors or lenses, the density gradients of a fluid can be seen. Examples would be the heat rising from a candle, or the aerodynamics effects of a bullet traveling through the air. This technique is used in wind tunnels and in many other areas of research.<\/p>\n<p>This diagram from NASA shows a typical duel mirror Schlieren setup:<\/p>\n<p><a href=\"http:\/\/nuclearprojects.com\/blog\/wp-content\/uploads\/2014\/09\/nasa-schlieren.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-348 size-full\" src=\"http:\/\/nuclearprojects.com\/blog\/wp-content\/uploads\/2014\/09\/nasa-schlieren.jpg\" alt=\"nasa-schlieren\" width=\"720\" height=\"540\" srcset=\"https:\/\/nuclearprojects.com\/blog\/wp-content\/uploads\/2014\/09\/nasa-schlieren.jpg 720w, https:\/\/nuclearprojects.com\/blog\/wp-content\/uploads\/2014\/09\/nasa-schlieren-300x225.jpg 300w\" sizes=\"auto, (max-width: 720px) 100vw, 720px\" \/><\/a><\/p>\n<p>Here are a couple examples of what a Schlieren setup can produce:<\/p>\n<p><a href=\"http:\/\/nuclearprojects.com\/blog\/wp-content\/uploads\/2014\/09\/schlieren1.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-347\" src=\"http:\/\/nuclearprojects.com\/blog\/wp-content\/uploads\/2014\/09\/schlieren1.jpg\" alt=\"schlieren1\" width=\"263\" height=\"154\" \/><\/a><\/p>\n<p>And this one:<\/p>\n<div id=\"attachment_346\" style=\"width: 230px\" class=\"wp-caption aligncenter\"><a href=\"http:\/\/nuclearprojects.com\/blog\/wp-content\/uploads\/2014\/09\/220px-Schlieren-color-candle-plume.jpg\" target=\"_blank\" rel=\"http:\/\/commons.wikimedia.org\/wiki\/File:Schlieren-color-candle-plume.jpg#mediaviewer\/File:Schlieren-color-candle-plume.jpg\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-346\" class=\"wp-image-346 size-full\" src=\"http:\/\/nuclearprojects.com\/blog\/wp-content\/uploads\/2014\/09\/220px-Schlieren-color-candle-plume.jpg\" alt=\"220px-Schlieren-color-candle-plume\" width=\"220\" height=\"213\" \/><\/a><p id=\"caption-attachment-346\" class=\"wp-caption-text\">&#8220;Schlieren-color-candle-plume&#8221; by Settles1 &#8211; Licensed under C.C. Attribution 3.0 via Wikimedia Commons<\/p><\/div>\n","protected":false},"excerpt":{"rendered":"<p>A really neat technique for visualizing the flow of fluids is called Schlieren flow visualization (pronounced: sh-lear-in). By using either special mirrors or lenses, the density gradients of a fluid can be seen. Examples would be the heat rising from a candle, or the aerodynamics effects of a bullet traveling through the air. This technique [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":346,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[18],"tags":[],"class_list":["post-345","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-cool-stuff"],"_links":{"self":[{"href":"https:\/\/nuclearprojects.com\/blog\/wp-json\/wp\/v2\/posts\/345","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/nuclearprojects.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/nuclearprojects.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/nuclearprojects.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/nuclearprojects.com\/blog\/wp-json\/wp\/v2\/comments?post=345"}],"version-history":[{"count":6,"href":"https:\/\/nuclearprojects.com\/blog\/wp-json\/wp\/v2\/posts\/345\/revisions"}],"predecessor-version":[{"id":355,"href":"https:\/\/nuclearprojects.com\/blog\/wp-json\/wp\/v2\/posts\/345\/revisions\/355"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/nuclearprojects.com\/blog\/wp-json\/wp\/v2\/media\/346"}],"wp:attachment":[{"href":"https:\/\/nuclearprojects.com\/blog\/wp-json\/wp\/v2\/media?parent=345"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/nuclearprojects.com\/blog\/wp-json\/wp\/v2\/categories?post=345"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/nuclearprojects.com\/blog\/wp-json\/wp\/v2\/tags?post=345"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}