{"id":453732,"date":"2026-03-04T16:04:16","date_gmt":"2026-03-04T16:04:16","guid":{"rendered":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/convergent-body-from-nx-2027-causing-zone-merge-errors\/"},"modified":"2026-03-04T16:04:16","modified_gmt":"2026-03-04T16:04:16","slug":"convergent-body-from-nx-2027-causing-zone-merge-errors","status":"publish","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/convergent-body-from-nx-2027-causing-zone-merge-errors\/","title":{"rendered":"Convergent Body from NX 2027 Causing Zone Merge Errors"},"content":{"rendered":"<p>&lt;p&gt;Hello,&lt;\/p&gt;&lt;p&gt;I am working on a heat dissipation analysis for a complex heatsink geometry and have been encountering a series of issues importing and meshing a model that contains convergent bodies originating from NX 2027. I wanted to document the full issue chain here in case others have encountered similar problems and to ask for guidance on the best path forward.&lt;\/p&gt;&lt;p&gt;&#8212;&lt;\/p&gt;&lt;p&gt;SOFTWARE VERSIONS:&lt;br&gt;- NX 2027&lt;br&gt;- ANSYS 2025 (Electronics Desktop \/ Workbench)&lt;br&gt;- Fluent Meshing (Watertight Geometry Workflow)&lt;\/p&gt;&lt;p&gt;&lt;br&gt;BACKGROUND:&lt;br&gt;The geometry was created in NX 2027 and contains convergent bodies. The goal is to perform a heat transfer analysis on a complex heatsink in Fluent\/Icepack.&lt;\/p&gt;&lt;p&gt;&lt;br&gt;ISSUES ENCOUNTERED:&lt;\/p&gt;&lt;p&gt;1. Parasolid Text Export (.x_t) blocked with error:&lt;br&gt;&#8221;Cannot export Convergent bodies as text files. Please export Convergent bodies as binary.&#8221;&lt;\/p&gt;&lt;p&gt;2. Parasolid Binary Export (.x_b) succeeded but imported into AEDT as an empty\/invisible body with no geometry present.&lt;\/p&gt;&lt;p&gt;3. Brought geometry into Workbench via direct .prt import. Opened in SpaceClaim where the convergent body appears as a Facets body type in the Structure tree, alongside a solid Enclosure body created in SpaceClaim.&lt;\/p&gt;&lt;p&gt;4. In Fluent Meshing Watertight Geometry Workflow, Generate Surface Mesh fails with:&lt;br&gt;&#8221;Cannot merge zones of different types or belonging to different objects.&#8221;&lt;br&gt;It seems like this is caused by the heatsink being a Facets\/mesh body type while the enclosure is a standard solid body&lt;\/p&gt;&lt;p&gt;Here&#8217;s what I&#8217;ve tried so far: &nbsp;&lt;\/p&gt;&lt;p&gt;- Exporting as STEP from NX &mdash; geometry incomplete, some features not captured&lt;br&gt;- Exporting as Parasolid binary &mdash; imports as empty geometry in AEDT&lt;br&gt;- SpaceClaim Repair tools &mdash; no STEP or Parasolid export available in current license&lt;\/p&gt;&lt;p&gt;&nbsp;&lt;\/p&gt;&lt;p&gt;QUESTIONS:&lt;\/p&gt;&lt;p&gt;1. Is there a way to handle mixed Facets\/Solid geometry in the Fluent Meshing Watertight Geometry workflow, or is Fault Tolerant Meshing the correct workflow for this situation?&lt;br&gt;2. Is there a recommended workflow for bringing NX 2027 convergent body geometry into Fluent\/Icepack for analysis?&lt;\/p&gt;&lt;p&gt;Any guidance would be greatly appreciated. Thank you.&lt;\/p&gt;<\/p>\n","protected":false},"template":"","class_list":["post-453732","topic","type-topic","status-publish","hentry"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_forum_id":["27792"],"_bbp_topic_id":["453732"],"_bbp_subscription":["659295","13988"],"_bbp_author_ip":["195.252.220.54"],"_bbp_last_reply_id":["454625"],"_bbp_last_active_id":["454625"],"_bbp_last_active_time":["2026-03-17 06:29:43"],"_bbp_reply_count":["1"],"_bbp_reply_count_hidden":["0"],"_bbp_voice_count":["2"],"_bbp_engagement":["659295","13988"],"_btv_view_count":["71"],"_bbp_topic_status":["unanswered"]},"test":"audryspurdue-edu"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/453732","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\/453732\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=453732"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}