{"id":161222,"date":"2021-08-11T15:24:55","date_gmt":"2021-08-11T15:24:55","guid":{"rendered":"\/forum\/forums\/topic\/defining-the-interface-of-a-2-way-fluid-solid-interaction-and-capturing-the-accurate-mesh-motion\/"},"modified":"2021-08-14T15:04:57","modified_gmt":"2021-08-14T15:04:57","slug":"defining-the-interface-of-a-2-way-fluid-solid-interaction-and-capturing-the-accurate-mesh-motion","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/defining-the-interface-of-a-2-way-fluid-solid-interaction-and-capturing-the-accurate-mesh-motion\/","title":{"rendered":"Defining the Interface of a 2-way Fluid-Solid Interaction, and Capturing the Accurate Mesh Motion"},"content":{"rendered":"<div class=\"Item-Body\">\n<div class=\"Message userContent\">\n<p>Hello dear expert,<\/p>\n<p>I am new to ANSYS Workbench, and I have faced some issues regarding two-way fluid-solid interaction. I want to simulate a simple model, a 2D rectangular duct that a part of its top wall is flexible. So I created a rectangular channel and attached a rectangular part to represent that flexible section of the top wall, which has a thickness of 1mm. For more simplicity, I have only used fixed support at both ends of this flexible section to see how the airflow impacts it. (Note: since we cannot mesh a 2D geometry in ANSYS, I have set the width to be 1mm, and there are only two rows of elements in the width of the domain).<\/p>\n<p>Regarding this discussion (<a href=\"\/forum\/discussion\/1222\/creating-a-common-wall-on-fluid-flow\" rel=\"nofollow\">\/forum\/discussion\/1222\/creating-a-common-wall-on-fluid-flow<\/a>), I have formed&nbsp;a new part&nbsp;and then used &ldquo;share topology&rdquo; to achieve a conformal mesh&nbsp;and avoid further errors&nbsp;such as&nbsp;<strong><em>one-surface: cannot create surface from sliding interface zone. Creating empty surface,&nbsp;<\/em><\/strong>or<strong><em>&nbsp;additional walls in Fluent.<\/em><\/strong><\/p>\n<p>However, by using share topology and having no problem with meshing the fluid zone, when I open fluent to setup other variables (inlet velocity, dynamic mesh motion, and so forth), there will be&nbsp;<strong><em>no mesh interface<\/em><\/strong>, and also the&nbsp;<strong><em>interface<\/em><\/strong>&nbsp;will automatically be set&nbsp;<strong><em>wall:<\/em><\/strong><\/p>\n<div class=\"embedExternal embedImage\">\n<div class=\"embedExternal-content\">\n<a class=\"embedImage-link\" href=\"\/forum\/wp-content\/uploads\/forum-uploads\/772\/M3J9494RAZC5.jpg\" rel=\"nofollow noopener\" target=\"_blank\"><br \/>\n<img decoding=\"async\" class=\"embedImage-img\" src=\"\/forum\/wp-content\/uploads\/forum-uploads\/772\/M3J9494RAZC5.jpg\" alt=\"Capture11.JPG\" \/><br \/>\n<\/a><\/p>\n","protected":false},"template":"","class_list":["post-161222","topic","type-topic","status-closed","hentry","topic-tag-ansys-fluent","topic-tag-ansys-workbench","topic-tag-meshing"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_author_ip":[""],"_bbp_view_count":["236"],"_bbp_likes_count":["0","0"],"_bbp_forum_subforum_count":["0"],"_btv_view_count":["2445"],"_bbp_subscription":["245289"],"_bbp_topic_status":["unanswered"],"_bbp_status":["publish"],"_bbp_topic_id":["161222"],"_bbp_forum_id":["27792"],"_bbp_engagement":["20093","204595"],"_bbp_voice_count":["2"],"_bbp_reply_count":["2"],"_bbp_last_reply_id":["188770"],"_bbp_last_active_id":["188770"],"_bbp_last_active_time":["2021-08-14 15:04:57"]},"test":"m-samanehmirigmail-com"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/161222","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics"}],"about":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/types\/topic"}],"version-history":[{"count":0,"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/161222\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=161222"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}