{"id":33369,"date":"2019-02-18T09:55:44","date_gmt":"2019-02-18T09:55:44","guid":{"rendered":"\/forum\/forums\/topic\/divergence-detected-in-amg-solver-pressure-coupling\/"},"modified":"2019-02-18T09:55:44","modified_gmt":"2019-02-18T09:55:44","slug":"divergence-detected-in-amg-solver-pressure-coupling","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/divergence-detected-in-amg-solver-pressure-coupling\/","title":{"rendered":"Divergence detected in AMG solver: pressure coupling"},"content":{"rendered":"<p>Hi<\/p>\n<p><\/p>\n<p>I am doing 2 way FSI simulation of&nbsp; a flap.Case is 3D and flow is laminar .I started simulation with pressure based transient flow using time step 1e-4. Coupled scheme is used with second order implicit transient formulation.<\/p>\n<p><\/p>\n<p>Case worked well until 1800 coupling steps then suddenly I got the error<\/p>\n<p><\/p>\n<p>&#8220;Divergence detected in AMG solver, pressure coupling&#8221;<\/p>\n<p><\/p>\n<p>I want to know the reason for this type of error, if any one could guide me please. Is there any problem in solver or discretization scheme?<\/p>\n<p><\/p>\n<p>Waiting for a kind response.<\/p>\n<p><\/p>\n<p>&nbsp;<\/p>\n<p><\/p>\n<p>Kind regards<\/p>\n<p><\/p>\n<p>Tayyaba<\/p>\n<p><\/p>\n<p>&nbsp;<\/p>\n","protected":false},"template":"","class_list":["post-33369","topic","type-topic","status-closed","hentry"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_old_topic_id":["5541"],"_bbp_old_topic_author_name_id":["Anonymous"],"_bbp_old_is_topic_anonymous_id":["false"],"_bbp_old_closed_status_id":["publish"],"_bbp_author_ip":[null],"_bbp_old_sticky_status_id":["normal"],"_bbp_likes_count":["0","0","0","0","0"],"_btv_view_count":["2296"],"_bbp_topic_status":["unanswered"],"_bbp_status":["publish"],"_bbp_topic_id":["33369"],"_bbp_forum_id":["27792"],"_bbp_engagement":["22555","159399","160370"],"_bbp_voice_count":["3"],"_bbp_reply_count":["8"],"_bbp_last_reply_id":["104346"],"_bbp_last_active_id":["104346"],"_bbp_last_active_time":["2020-02-04 16:14:51"]},"test":"tayyaba"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/33369","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\/33369\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=33369"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}