{"id":245922,"date":"2023-01-09T15:25:26","date_gmt":"2023-01-09T15:25:26","guid":{"rendered":"\/forum\/forums\/topic\/mesh-generation-errors-when-growth-rate-1-1-with-structured-2d-mesh\/"},"modified":"2023-01-10T00:20:13","modified_gmt":"2023-01-10T00:20:13","slug":"mesh-generation-errors-when-growth-rate-1-1-with-structured-2d-mesh","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/mesh-generation-errors-when-growth-rate-1-1-with-structured-2d-mesh\/","title":{"rendered":"Mesh generation errors when Growth Rate &gt; 1.1 with structured 2D mesh"},"content":{"rendered":"<p>Hello everyone,<\/p>\n<p>I want to simulate a 2D airfoil using a structured C-mesh similar to <a href=\"http:\/\/www.cfd-online.com\/W\/images\/1\/1a\/Naca0012_mesh_final.JPG\">this one<\/a>. Therefore I made a couple of sizings with a fixed number of divisions and a Multizone Quad\/Tri Method. Overall the mesh looks correct, but in the area close to the airfoil the growth rate of the cells is strange as shown in this image:<\/p>\n<p><a class=\"wp-colorbox-image cboxElement\" href=\"\/forum\/wp-content\/uploads\/sites\/2\/2023\/01\/09-01-2023-1673276638-mceclip0.png\"><img loading=\"lazy\" decoding=\"async\" src=\"\/forum\/wp-content\/uploads\/sites\/2\/2023\/01\/09-01-2023-1673276638-mceclip0.png\" width=\"230\" height=\"572\"><\/a><\/p>\n<p>Also I get this warning: <br \/>The following entities with objects scoped to them were unable to have mesh data correctly associated with them. Try removing the object scoped to these entities or try another mesh method to get a successful mesh.<br \/>Project &gt; Model &gt; Geometry &gt; Surface Body &gt; Surface Body<\/p>\n<p>I found out that it has to do with the growth rate of the sizing orthogonal to the surface (actually boundary, since it&#8217;s 2D) of the airfoil. If I set it to 1.1 it looks fine:<\/p>\n<p><a class=\"wp-colorbox-image cboxElement\" href=\"\/forum\/wp-content\/uploads\/sites\/2\/2023\/01\/09-01-2023-1673277205-mceclip1.png\"><img loading=\"lazy\" decoding=\"async\" src=\"\/forum\/wp-content\/uploads\/sites\/2\/2023\/01\/09-01-2023-1673277205-mceclip1.png\" width=\"276\" height=\"557\"><\/a><\/p>\n<p>Though I still get the warning from above (so maybe it&#8217;s unrelated). The threshold seems to be around 1.11.<\/p>\n<p>What am I doing wrong?<\/p>\n","protected":false},"template":"","class_list":["post-245922","topic","type-topic","status-closed","hentry","topic-tag-Structuredmeshing-2","topic-tag-2d-meshing-1","topic-tag-growth-rate-1"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_subscription":["245942","62"],"_bbp_author_ip":["23.192.164.18"]," _bbp_last_reply_id":["0"]," _bbp_likes_count":["0"],"_btv_view_count":["1757"],"_edit_lock":["1673310080:171426"],"_bbp_topic_status":["unanswered"],"_bbp_status":["publish"],"_bbp_topic_id":["245922"],"_bbp_forum_id":["27792"],"_bbp_engagement":["62","245942"],"_bbp_voice_count":["2"],"_bbp_reply_count":["5"],"_bbp_last_reply_id":["246510"],"_bbp_last_active_id":["246510"],"_bbp_last_active_time":["2023-01-13 18:04:46"]},"test":"oll5hbdfkmozmail-com"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/245922","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\/245922\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=245922"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}