{"id":762,"date":"2020-02-17T21:37:45","date_gmt":"2020-02-17T20:37:45","guid":{"rendered":"http:\/\/yvcharron.com\/?page_id=762"},"modified":"2020-12-20T10:19:26","modified_gmt":"2020-12-20T09:19:26","slug":"structured-surfaces-2","status":"publish","type":"page","link":"https:\/\/yvcharron.com\/index.php\/structured-surfaces-2\/","title":{"rendered":"Structured surfaces &#8211; From two to three dimensions"},"content":{"rendered":"\n<p style=\"text-align:center\" class=\"has-text-color has-small-font-size has-cyan-bluish-gray-color\">Keywords: Structured surfaces Two-dimension 2D 3D flow drag reduction turbulence low speed streaks grooves<\/p>\n\n\n\n<p style=\"text-align:left\" class=\"has-text-color has-large-font-size has-very-dark-gray-color\">This section includes three parts:<\/p>\n\n\n\n<p style=\"text-align:center\">_<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" style=\"text-align:center\">Two_dimension structures or 2D longitudinal grooves<\/h2>\n\n\n\n<div class=\"wp-block-media-text alignwide\" style=\"grid-template-columns:29% auto\"><figure class=\"wp-block-media-text__media\"><img loading=\"lazy\" decoding=\"async\" width=\"500\" height=\"412\" src=\"http:\/\/yvcharron.com\/wp-content\/uploads\/2020\/12\/shark-skin-surfaces-for-fluid-drag-reduction_rsta20100201f04.jpg\" alt=\"Two_dimension grooves also called riblets. Flow drag reduction from 6 to 12%.\" class=\"wp-image-2128\" srcset=\"https:\/\/yvcharron.com\/wp-content\/uploads\/2020\/12\/shark-skin-surfaces-for-fluid-drag-reduction_rsta20100201f04.jpg 500w, https:\/\/yvcharron.com\/wp-content\/uploads\/2020\/12\/shark-skin-surfaces-for-fluid-drag-reduction_rsta20100201f04-300x247.jpg 300w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/figure><div class=\"wp-block-media-text__content\">\n<p style=\"text-align:center\" class=\"has-text-color has-medium-font-size has-very-dark-gray-color\"> These structures include only <em><strong>ONE flow drag reduction mechanism<\/strong><\/em>. They are also called <strong>riblets<\/strong>.  <\/p>\n\n\n\n<p style=\"text-align:center\" class=\"has-text-color has-medium-font-size has-vivid-cyan-blue-color\">\n\nThey are longitudinal <strong>with constant shape and dimension in the MAIN flow direction<\/strong><\/p>\n<\/div><\/div>\n\n\n\n<p style=\"text-align:center\"><a href=\"http:\/\/yvcharron.com\/index.php\/two-dimension-structures\/\">http:\/\/yvcharron.com\/index.php\/two-dimension-structures\/<\/a>_<\/p>\n\n\n\n<p style=\"text-align:center\">_<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" style=\"text-align:center\">Three_dimension structures &#8211; Type 3D_1<\/h2>\n\n\n\n<div class=\"wp-block-media-text alignwide\" style=\"grid-template-columns:36% auto\"><figure class=\"wp-block-media-text__media\"><img loading=\"lazy\" decoding=\"async\" width=\"626\" height=\"343\" src=\"http:\/\/yvcharron.com\/wp-content\/uploads\/2020\/03\/image-11.png\" alt=\"Three_dimension structures, longitudinal grooves with transversal displacement flow drag reduction of 10 to 20%.\" class=\"wp-image-815\" srcset=\"https:\/\/yvcharron.com\/wp-content\/uploads\/2020\/03\/image-11.png 626w, https:\/\/yvcharron.com\/wp-content\/uploads\/2020\/03\/image-11-300x164.png 300w\" sizes=\"auto, (max-width: 626px) 100vw, 626px\" \/><\/figure><div class=\"wp-block-media-text__content\">\n<p style=\"text-align:center\" class=\"has-text-color has-medium-font-size has-very-dark-gray-color\">These structures include <strong><em>TWO flow drag reduction mechanisms<\/em><\/strong><em>:<\/em> longitudinal riblets with transversal (lateral) periodic displacement. <\/p>\n\n\n\n<p style=\"text-align:center\" class=\"has-text-color has-medium-font-size has-vivid-cyan-blue-color\">They present the<strong> same shape and dimension along the structure path <\/strong> i.e. the secondary local flow.  <strong>  <\/strong><\/p>\n\n\n\n<p style=\"text-align:center\">_<\/p>\n<\/div><\/div>\n\n\n\n<p style=\"text-align:center\"><a href=\"http:\/\/yvcharron.com\/index.php\/three-dimension-structured-surfaces-type-1\/\">http:\/\/yvcharron.com\/index.php\/three-dimension-structured-surfaces-type-1\/<\/a><\/p>\n\n\n\n<p style=\"text-align:center\">_<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" style=\"text-align:center\">Three_dimension structures &#8211; Type 3D_2<\/h2>\n\n\n\n<div class=\"wp-block-media-text alignwide\" style=\"grid-template-columns:28% auto\"><figure class=\"wp-block-media-text__media\"><img loading=\"lazy\" decoding=\"async\" width=\"297\" height=\"190\" src=\"http:\/\/yvcharron.com\/wp-content\/uploads\/2020\/03\/image-12.png\" alt=\"Three dimension structures, longitudinal grooves with two orthogonal waves, one transversal and one normal to the surface, flow drag reduction greater than 20 %\" class=\"wp-image-826\"\/><\/figure><div class=\"wp-block-media-text__content\">\n<p style=\"text-align:center\" class=\"has-text-color has-medium-font-size has-very-dark-gray-color\">These structures include <strong><em>THREE flow drag reduction mechanisms<\/em><\/strong><em>: <\/em>longitudinal riblets with two orthogonal waves, one transversal periodic displacement plus one normal periodic displacement. <\/p>\n\n\n\n<p style=\"text-align:center\" class=\"has-text-color has-medium-font-size has-vivid-cyan-blue-color\">They present the<strong> same shape but varying  height along the structure path&nbsp;<\/strong>i.e. the secondary local flow. <\/p>\n\n\n\n<p style=\"text-align:center\">_<\/p>\n<\/div><\/div>\n\n\n\n<p style=\"text-align:center\"><a href=\"http:\/\/yvcharron.com\/index.php\/three-dimension-structures-type-2\/\">http:\/\/yvcharron.com\/index.php\/three-dimension-structures-type-2\/<\/a><\/p>\n\n\n\n<p style=\"text-align:center\">_<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Keywords: Structured surfaces Two-dimension 2D 3D flow drag reduction turbulence low speed streaks grooves This section includes three parts: _ Two_dimension structures or 2D longitudinal grooves These structures include only ONE flow drag reduction mechanism. They are also called riblets. They are longitudinal with constant shape and dimension in the MAIN flow direction http:\/\/yvcharron.com\/index.php\/two-dimension-structures\/_ _&hellip; <br \/> <a class=\"read-more\" href=\"https:\/\/yvcharron.com\/index.php\/structured-surfaces-2\/\">Read more<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-762","page","type-page","status-publish","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.9 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Structured surfaces - From two to three dimensions - CHARRON Yves<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/yvcharron.com\/index.php\/structured-surfaces-2\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Structured surfaces - From two to three dimensions - CHARRON Yves\" \/>\n<meta property=\"og:description\" content=\"Keywords: Structured surfaces Two-dimension 2D 3D flow drag reduction turbulence low speed streaks grooves This section includes three parts: _ Two_dimension structures or 2D longitudinal grooves These structures include only ONE flow drag reduction mechanism. 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