{"id":307993,"date":"2023-09-22T01:48:05","date_gmt":"2023-09-22T01:48:05","guid":{"rendered":"\/forum\/forums\/topic\/meshing-and-convergence\/"},"modified":"2023-09-22T01:48:05","modified_gmt":"2023-09-22T01:48:05","slug":"meshing-and-convergence","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/meshing-and-convergence\/","title":{"rendered":"Meshing and convergence"},"content":{"rendered":"<p>I am carrying out a study on Ahmed&#8217;s body in order to validate another study on external flow.<\/p>\n<p>With a coarser mesh, I obtain satisfactory values, in addition to convergence. But I need greater precision.<\/p>\n<p>Therefore, I was working on refining the mesh, calculating the size of the thickness of the first boundary layer and the Y+.<\/p>\n<p>However, I find it difficult to obtain convergence of results when I refine the mesh. The residual graphs fluctuate a lot, as do the results for Cd and Cl.<\/p>\n<p>Therefore, I would like to know how I can overcome this problem in order to achieve a good quality mesh and convergence of results.<\/p>\n<p>Another issue is that, when I refine the mesh to the calculated values of the initial boundary layer thickness, there are very small cells, making it difficult to achieve good orthogonal quality of the mesh.<\/p>\n<p>If anyone can help, I would greatly appreciate it.<\/p>\n","protected":false},"template":"","class_list":["post-307993","topic","type-topic","status-closed","hentry","topic-tag-fluent-cfd-ansys-1","topic-tag-heatfluxfluentnaturalconvectionexternalflowansys-1"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_subscription":["128308","13659"],"_bbp_author_ip":["23.52.43.81"]," _bbp_last_reply_id":["0"]," _bbp_likes_count":["0"],"_btv_view_count":["332"],"_bbp_topic_status":["unanswered"],"_bbp_status":["publish"],"_bbp_topic_id":["307993"],"_bbp_forum_id":["27786"],"_bbp_engagement":["13659","128308"],"_bbp_voice_count":["2"],"_bbp_reply_count":["1"],"_bbp_last_reply_id":["310368"],"_bbp_last_active_id":["310368"],"_bbp_last_active_time":["2023-10-06 12:05:26"]},"test":"bchristo97gmail-com"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/307993","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\/307993\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=307993"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}