{"id":240995,"date":"2022-11-16T13:04:27","date_gmt":"2022-11-16T13:04:27","guid":{"rendered":"\/forum\/forums\/topic\/problems-in-meshing-stl-files\/"},"modified":"2023-03-14T13:37:21","modified_gmt":"2023-03-14T13:37:21","slug":"problems-in-meshing-stl-files","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/problems-in-meshing-stl-files\/","title":{"rendered":"Problems in meshing stl files"},"content":{"rendered":"<p style=\"text-align: justify\">Hi!<\/p>\n<p style=\"text-align: justify\">I realized a geometry model through segmentation of a biomedical image using 3D slicer. Now I need to mesh it in order to perform a CFD on Ansys Fluent.<\/p>\n<p style=\"text-align: justify\">However, I met so many problems:<\/p>\n<ol style=\"text-align: justify\">\n<li>My 3D model is in a .stl format and it doesn&#8217;t allow the mesher to create the mesh since the huge number of facets makes the geometry too complicated. So, on the geometry step I converted the facets into a solid and passed it to the mesher.<\/li>\n<li>At this point the mesh was created, but with big elements, which I need to be much smaller. However, by decreasing the elements size I got this error: &#8220;Execution error inside the mesher. The process suffered an unhandled exception or ran out of memory&#8221;.<\/li>\n<li>I also need to perform inflation of the mesh. However, one of the input required is the &#8220;boundary&#8221;, that has to be a surface. I could probably create (but I&#8217;m not sure) a surface named selection given but the sum of all the small faces that make up my solid&#8217;s surface, but they are thousands and I have to select them one-by-one, and of course this makes the process too hard. Another option I though about was to create a &#8220;patch body&#8221;, made of the solid surface, from the geometry software, usign the AutoSkin function, so to use it as the surface I need for the &#8220;boundary&#8221; voice in &#8220;inflation&#8221; for the mesh. However in this case I would have two separate models in the mesher: a solid model + the surface model, so I don&#8217;t know if this solution would work.<\/li>\n<\/ol>\n<p style=\"text-align: justify\">&nbsp;<\/p>\n<p style=\"text-align: justify\">Please since I&#8217;m not an expert and I&#8217;m trying to figure things out, your help would be really apreciated!<\/p>\n<p style=\"text-align: justify\">Thank you<\/p>\n","protected":false},"template":"","class_list":["post-240995","topic","type-topic","status-closed","hentry"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_subscription":["267918","199"],"_bbp_author_ip":["23.48.209.109"]," _bbp_last_reply_id":["0"]," _bbp_likes_count":["0"],"_btv_view_count":["1552"],"_bbp_status":["publish"],"_bbp_topic_status":["unanswered"],"_bbp_topic_id":["240995"],"_bbp_forum_id":["27796"],"_bbp_engagement":["199","267918"],"_bbp_voice_count":["2"],"_bbp_reply_count":["6"],"_bbp_last_reply_id":["241137"],"_bbp_last_active_id":["241137"],"_bbp_last_active_time":["2022-11-17 10:46:39"]},"test":"valeria-guadagnomail-polimi-it"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/240995","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\/240995\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=240995"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}