{"id":460268,"date":"2026-06-23T23:56:07","date_gmt":"2026-06-23T23:56:07","guid":{"rendered":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/fluent-mesh-fails-at-propeller-trailing-edge\/"},"modified":"2026-06-23T23:56:07","modified_gmt":"2026-06-23T23:56:07","slug":"fluent-mesh-fails-at-propeller-trailing-edge","status":"publish","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/fluent-mesh-fails-at-propeller-trailing-edge\/","title":{"rendered":"Fluent mesh fails at propeller trailing edge"},"content":{"rendered":"

<p>I am modelling a small two-bladed propeller for CFD in ANSYS 2026 R1 Student. The propeller was reconstructed in Fusion 360 using lofted airfoil sections, exported as STEP\/SAT, imported into ANSYS, and Boolean-subtracted from a rotating cylindrical fluid domain for Fluent. Inserted one first to see whats the problem.<\/p><p class=”isSelectedEnd”>The issue is that meshing the rotating domain fails. The main errors are:<\/p><p>“one or more entities failed to mesh”<br>“one or more surfaces cannot be meshed with acceptable quality”<br>“the current meshing options and settings cannot generate a mesh”<\/p><p class=”isSelectedEnd”>When I inspect the failed region, ANSYS highlights the propeller trailing-edge area and sometimes the root\/tip area. The blade wall faces are selectable after the Boolean subtract, but the surface mesh still fails around these thin\/sliver faces.<\/p><p class=”isSelectedEnd”>Things I have tried:<\/p><ul data-spread=”false”><\/p>\n

  • Reduced the loft from 30+ airfoil profiles to about 10 profiles.<\/li>\n
  • Removed guide rails from the loft.<\/li>\n
  • Blunted\/rounded the trailing edge in the airfoil sketches before lofting.<\/li>\n
  • Exported clean STEP\/SAT files with only the final solid body.<\/li>\n
  • Turned off automatic inflation.<\/li>\n
  • Tried automatic Virtual Topology, but it created 0 virtual faces\/edges.<\/li>\n
  • Tried body\/edge sizing.<\/li>\n
  • Tried stitching the separate trailing-edge surface in SpaceClaim, but it did not solve the issue.<br><br><br>Please help<br><br>SCreenshots:<br><br><\/li>\n<\/ul>\n","protected":false},"template":"","class_list":["post-460268","topic","type-topic","status-publish","hentry","topic-tag-fluent-ansys-1"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_forum_id":["27792"],"_bbp_topic_id":["460268"],"_bbp_subscription":["702177","199"],"_bbp_author_ip":["118.189.177.18"],"_bbp_last_reply_id":["460290"],"_bbp_last_active_id":["460290"],"_bbp_last_active_time":["2026-06-24 10:07:53"],"_bbp_reply_count":["3"],"_bbp_reply_count_hidden":["0"],"_bbp_voice_count":["2"],"_bbp_engagement":["702177","199"],"_btv_view_count":["33"],"_bbp_topic_status":["unanswered"]},"test":"r-sakthidharangmail-com"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/460268","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\/460268\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=460268"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}