{"id":41555,"date":"2020-03-06T12:29:26","date_gmt":"2020-03-06T12:29:26","guid":{"rendered":"\/forum\/forums\/topic\/solution-wouldnt-stabilize-or-reach-convergence-wind-turbine-k-omega-model-2\/"},"modified":"2020-03-06T12:29:26","modified_gmt":"2020-03-06T12:29:26","slug":"solution-wouldnt-stabilize-or-reach-convergence-wind-turbine-k-omega-model-2","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/solution-wouldnt-stabilize-or-reach-convergence-wind-turbine-k-omega-model-2\/","title":{"rendered":"Solution wouldn&#8217;t stabilize or reach convergence, Wind turbine K-Omega model"},"content":{"rendered":"<p>Dear members,&nbsp;<\/p>\n<p><\/p>\n<p>I tried solving a 2,700,000 element structured mesh of good orthogonal quality (0.93) and low skewness using the K-Omega model and PRESTO setting, during initialization it mentioned that it didn&#8217;t reach convergence. I started calculating with 1000 iteration and the value of Cm seemed to stabilize before fluctuating intensively towards the last 200 iterations.<\/p>\n<p><\/p>\n<p>While solving it kept printing &#8221; reversed flow in 7000 faces on pressure outlet 8&#8243; What does that mean ?<br \/>Any clue regarding what could be done ?<\/p>\n<p><\/p>\n<p><img decoding=\"async\" src=\"https:\/\/us.v-cdn.net\/6032193\/uploads\/attachments\/f97fb995-8d3f-4054-a60b-a9b30008458e\/800f2c55-b3e5-45d3-acdb-ab7600cbe6be_fluent-2.jpg?width=690&amp;upscale=false\" alt=\"\"><\/p>\n<p><\/p>\n<p><img decoding=\"async\" src=\"https:\/\/us.v-cdn.net\/6032193\/uploads\/attachments\/f97fb995-8d3f-4054-a60b-a9b30008458e\/d0a0c26a-7ee7-4634-925f-ab7600cbf9e5_fluent-1.jpg?width=690&amp;upscale=false\" alt=\"\"><\/p>\n<p><\/p>\n<p><img decoding=\"async\" src=\"https:\/\/us.v-cdn.net\/6032193\/uploads\/attachments\/f97fb995-8d3f-4054-a60b-a9b30008458e\/fdf3e8fa-6289-4c97-952e-ab7600cd2126_fluent-3.jpg?width=690&amp;upscale=false\" alt=\"\"><\/p>\n<p><\/p>\n<p><img decoding=\"async\" src=\"https:\/\/us.v-cdn.net\/6032193\/uploads\/attachments\/f97fb995-8d3f-4054-a60b-a9b30008458e\/0acd0e03-6330-428e-91e4-ab7600cc0ae1_mesh-1.jpg?width=690&amp;upscale=false\" alt=\"\"><\/p>\n<p><\/p>\n<p><img decoding=\"async\" src=\"https:\/\/us.v-cdn.net\/6032193\/uploads\/attachments\/f97fb995-8d3f-4054-a60b-a9b30008458e\/e495b582-740f-4d9a-9447-ab7600cc1d92_mesh-2.jpg?width=690&amp;upscale=false\" alt=\"\"><\/p>\n","protected":false},"template":"","class_list":["post-41555","topic","type-topic","status-closed","hentry"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_old_topic_id":["13735"],"_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"],"_btv_view_count":["1075"],"_bbp_subscription":["47177"],"_bbp_topic_status":["unanswered"],"_bbp_status":["publish"],"_bbp_topic_id":["41555"],"_bbp_forum_id":["27792"],"_bbp_engagement":["25","47177","161063"],"_bbp_voice_count":["3"],"_bbp_reply_count":["6"],"_bbp_last_reply_id":["320146"],"_bbp_last_active_id":["320146"],"_bbp_last_active_time":["2023-11-30 00:01:17"]},"test":"hazem"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/41555","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\/41555\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=41555"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}