{"id":53146,"date":"2021-03-10T14:24:20","date_gmt":"2021-03-10T14:24:20","guid":{"rendered":"\/forum\/forums\/topic\/problem-with-convergence-in-ansys-fluent\/"},"modified":"2021-03-10T14:24:20","modified_gmt":"2021-03-10T14:24:20","slug":"problem-with-convergence-in-ansys-fluent","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/problem-with-convergence-in-ansys-fluent\/","title":{"rendered":"Problem with convergence in ANSYS Fluent"},"content":{"rendered":"<p>Hello everyone.nI am doing a simulation on a real scale cuboidal building with small extrusion at the entrance (canopy) and it is inclined at 3 degrees. I performed the simulation in Ansys fluent and the simulation is not reaching at the convergence.nThe minimum element quality is 0.64, minimum orthogonal quality of mesh is 0.71 and max skewness is 0.55. I used the proximity size function and cutcell as assembly meshing and mesh seems to be good and there are about 3.76 million elements and 4.05 million nodes.nI am using standard k-epsilon turbulence model with inlet velocity as 12 m\/s and outlet as pressure outlet. nI am using pressure-velocity coupling as SIMPLE and all the parameters of spatial discretization as first order upwind to initialize the solution. The URFs are default and I tried changing them to 0.2 for pressure and 0.5 for other parameters. I set the residuals at 1*10^-4 and initialize the solution from inlet and then started the steady state simulation.nI tried changing the URFs, orders of the simulations, initialization properties. But, I do not understand the problem why the simulation is not getting converged. The minimum residual value it reaches for continuity is 4.75*10^-2 and after that it changes the value around this value and residual plot stays stable.nCan anyone please help me?n<\/p>\n","protected":false},"template":"","class_list":["post-53146","topic","type-topic","status-closed","hentry"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_old_topic_id":["25458"],"_bbp_old_topic_author_name_id":["Anonymous"],"_bbp_old_is_topic_anonymous_id":["false"],"_bbp_old_closed_status_id":["publish"],"_bbp_author_ip":["*\u0002'?\u0000\u0010?E-??N????"],"_bbp_old_sticky_status_id":["normal"],"_bbp_likes_count":["0"],"_btv_view_count":["3463"],"_bbp_subscription":["239732"],"_bbp_topic_status":["unanswered"],"_bbp_status":["publish"],"_bbp_topic_id":["53146"],"_bbp_forum_id":["27792"],"_bbp_engagement":["25","199","22555","164345"],"_bbp_voice_count":["4"],"_bbp_reply_count":["14"],"_bbp_last_reply_id":["147840"],"_bbp_last_active_id":["147840"],"_bbp_last_active_time":["2021-03-24 10:08:50"]},"test":"riteshnw"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/53146","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\/53146\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=53146"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}