{"id":408885,"date":"2025-02-07T23:42:17","date_gmt":"2025-02-07T23:42:17","guid":{"rendered":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/meshing-help-i-keep-getting-errors-how-would-you-tackle-this-geometry\/"},"modified":"2025-02-07T23:42:17","modified_gmt":"2025-02-07T23:42:17","slug":"meshing-help-i-keep-getting-errors-how-would-you-tackle-this-geometry","status":"publish","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/meshing-help-i-keep-getting-errors-how-would-you-tackle-this-geometry\/","title":{"rendered":"Meshing Help &#8211; I keep getting errors. How would you tackle this geometry?"},"content":{"rendered":"<p>&lt;p&gt;Hi,&lt;\/p&gt;&lt;p&gt;I&#8217;m having a really hard time generating a mesh for my geometry and hope someone can give me some pointers, or possible solutions and explanations why it&#8217;s not working.&lt;\/p&gt;&lt;p&gt;The geometry in question is a single cooling channel of a rocket nozzle and consists of a &#8216;U&#8217; shaped body (blue) called &#8216;liner&#8217;, the channel (red) itself, and a lid section that covers the channel (yellow) called &#8216;jacket&#8217;. (See the attached pictures&nbsp;<img decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2025\/02\/07-02-2025-1738969514-Screenshot 2025-02-08 000206.jpg\" alt=\"\" \/><img decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2025\/02\/07-02-2025-1738969575-Screenshot 2025-02-08 000234.jpg\" alt=\"\" \/>) It&#8217;s quite thin (approx. 2.5mm) but long (approx. 700mm).&lt;\/p&gt;&lt;p&gt;I imported the geometry from an Autodesk Inventor file into Discovery to prepared the geometry (repairs, named selections, shared topology, etc.).&lt;\/p&gt;&lt;p&gt;&nbsp;&lt;\/p&gt;&lt;p&gt;I want to add prism layers for the fluid-side channel walls. Could the low first layer height setting (6e-5mm) be an issue?&nbsp; &lt;\/p&gt;&lt;p&gt;Any pointers how to tackle the whole meshing process? Which methods, and mesh settings would you use for something like this?&lt;\/p&gt;&lt;p&gt;&nbsp;&lt;\/p&gt;&lt;p&gt;I tried using the MultiZone method for the channel body, and the Sweeping method (all 3 bodies&nbsp; for the liner and jacket body and added edge sizing at several locations.&nbsp;&lt;\/p&gt;&lt;p&gt;But I keep getting errors and warnings saying &#8216;a mesh couldn&#8217;t be generated with the current meshing options and settings&#8217;, &#8216;meshing was completed, but some elements don&#8217;t satisfy the quality criteria, process was aborted&#8217;, &#8216;elements with certain quality settings could not be assigned meshing data&#8217;, &#8216;collision detected, prism layers altered accordingly&#8217;.&nbsp;&lt;\/p&gt;&lt;p&gt;I also get a NURBS info when I open the meshing program. Could this be the reason for the errors, or does it just increase the meshing time?&lt;\/p&gt;&lt;p&gt;&nbsp;&lt;\/p&gt;&lt;p&gt;The weird and confusing thing is, that I was able to get it working a few days ago, but now it seems like the same settings don&#8217;t work anymore which is really frustrating.&lt;\/p&gt;&lt;p&gt;Sorry, if these are stupid\/obvious questions. I&#8217;m relatively new to this, so I&#8217;m thankful for any tips &#8211; even if they might seem trivial or basic for you!&lt;\/p&gt;&lt;p&gt;&nbsp;&lt;\/p&gt;&lt;p&gt;Regards,&lt;\/p&gt;&lt;p&gt;Phil&lt;\/p&gt;&lt;p&gt;&nbsp;&lt;\/p&gt;&lt;p&gt;Note: I losely translated the errors into english, so the wording might be slightly different than the real english error\/warning messages.&lt;\/p&gt;<\/p>\n","protected":false},"template":"","class_list":["post-408885","topic","type-topic","status-publish","hentry","topic-tag-error","topic-tag-meshing"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_forum_id":["27790"],"_bbp_topic_id":["408885"],"_bbp_subscription":["491682","240","54120"],"_bbp_author_ip":["2a02:3100:890d:aa00:5c10:a4d1:5067:fcd9"],"_bbp_last_reply_id":["421863"],"_bbp_last_active_id":["421863"],"_bbp_last_active_time":["2025-02-16 22:27:39"],"_bbp_reply_count":["3"],"_bbp_reply_count_hidden":["0"],"_bbp_voice_count":["3"],"_bbp_engagement":["491682","240","54120"],"_btv_view_count":["735"],"_bbp_topic_status":["unanswered"]},"test":"21e53e26581695e7c5bd209de34f2d2aeb5756e6"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/408885","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\/408885\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=408885"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}