{"id":342090,"date":"2023-12-26T11:18:38","date_gmt":"2023-12-26T11:18:38","guid":{"rendered":"\/forum\/forums\/topic\/why-does-a-model-with-bad-mesh-converge-but-not-with-good-mesh\/"},"modified":"2023-12-26T11:18:38","modified_gmt":"2023-12-26T11:18:38","slug":"why-does-a-model-with-bad-mesh-converge-but-not-with-good-mesh","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/why-does-a-model-with-bad-mesh-converge-but-not-with-good-mesh\/","title":{"rendered":"Why does a model with bad mesh converge, but not with good mesh?"},"content":{"rendered":"<p>Hello,<\/p>\n<p>&nbsp;<\/p>\n<p>I have done two almost identical analyses. The only difference between the two analyses is the mesh quality. While mesh with worse quality and stair-steps converges, mesh with better quality does not converge. What could be the reason?&nbsp;<\/p>\n<p>I add the mesh qualities below. Also I use Fluent Meshing.<\/p>\n<p>&nbsp;<\/p>\n<p><strong>Analysis Setup<\/strong><\/p>\n<p>Simple Ventilation Structure Performance<\/p>\n<p>Viscous Model : k-w (GEKO)<\/p>\n<p>&nbsp;<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"\/forum\/wp-content\/uploads\/sites\/2\/2023\/12\/26-12-2023-1703588961-mceclip0.png\" width=\"1037\" height=\"540\"><\/p>\n<p>&nbsp;<\/p>\n<p><strong>Converged Model&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;Not-Converged Model<\/strong><\/p>\n<p><img decoding=\"async\" src=\"\/forum\/wp-content\/uploads\/sites\/2\/2023\/12\/26-12-2023-1703589183-mceclip1.png\">&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <img loading=\"lazy\" decoding=\"async\" src=\"\/forum\/wp-content\/uploads\/sites\/2\/2023\/12\/26-12-2023-1703589236-mceclip2.png\" width=\"411\" height=\"335\"><\/p>\n<p>&nbsp;<\/p>\n","protected":false},"template":"","class_list":["post-342090","topic","type-topic","status-closed","hentry","topic-tag-cfd","topic-tag-convergence","topic-tag-fluent","topic-tag-fluentmeshing-1","topic-tag-mesh"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_subscription":["292772","39507","199"],"_bbp_author_ip":["96.7.218.223"]," _bbp_last_reply_id":["0"]," _bbp_likes_count":["0"],"_btv_view_count":["1110"],"_bbp_topic_status":["unanswered"],"_bbp_status":["publish"],"_bbp_topic_id":["342090"],"_bbp_forum_id":["27792"],"_bbp_engagement":["199","39507","292772"],"_bbp_voice_count":["3"],"_bbp_reply_count":["4"],"_bbp_last_reply_id":["342756"],"_bbp_last_active_id":["342756"],"_bbp_last_active_time":["2024-01-02 16:06:12"]},"test":"akndnzmngmail-com"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/342090","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\/342090\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=342090"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}