{"id":49501,"date":"2020-11-02T12:32:04","date_gmt":"2020-11-02T12:32:04","guid":{"rendered":"\/forum\/forums\/topic\/solution-not-converging-when-activating-adaptive-mesh-refinement-in-fluent\/"},"modified":"2020-11-02T12:32:04","modified_gmt":"2020-11-02T12:32:04","slug":"solution-not-converging-when-activating-adaptive-mesh-refinement-in-fluent","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/solution-not-converging-when-activating-adaptive-mesh-refinement-in-fluent\/","title":{"rendered":"Solution not converging when activating Adaptive Mesh Refinement in Fluent"},"content":{"rendered":"<div class=\"Item-Body\">\n<div class=\"Message userContent\">\n<p>Hello,<\/p>\n<p>I am trying to simulate a relatively simple 2D problem of a shock tube inviscid flow. It is a transient problem.<\/p>\n<p>I have created 2 cell zones for two sections in the geometry (which is a rectangle) and after providing boundary conditions, I have enabled adaptive mesh refinement.<\/p>\n<p>I did AMR by creating 2 cell registers for refinement and coarsening, and provided the refinement and coarsening thresholds for gradients of pressure.<\/p>\n<p>However, after several thousands of iterations the solution residuals stop converging. PFA image of a residual plot.<\/p>\n<div class=\"embedExternal embedImage\">\n<div class=\"embedExternal-content\">\n<a class=\"embedImage-link\" href=\"https:\/\/us.v-cdn.net\/6032193\/uploads\/SVJOL3U6ZTUP\/not-converging-st-problem-2.png\" rel=\"nofollow noopener\" target=\"_blank\"><br \/>\n<img decoding=\"async\" class=\"embedImage-img\" src=\"https:\/\/us.v-cdn.net\/6032193\/uploads\/SVJOL3U6ZTUP\/not-converging-st-problem-2.png\" alt=\"not converging st problem-2.png\" \/><br \/>\n<\/a><\/p>\n","protected":false},"template":"","class_list":["post-49501","topic","type-topic","status-closed","hentry","topic-tag-adaptive-mesh-method","topic-tag-fluent"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_old_topic_id":["21739"],"_bbp_old_topic_author_name_id":["Anonymous"],"_bbp_old_is_topic_anonymous_id":["false"],"_bbp_old_closed_status_id":["publish"],"_bbp_author_ip":["tDH?"],"_bbp_old_sticky_status_id":["normal"],"_bbp_likes_count":["0"],"_btv_view_count":["926"],"_bbp_subscription":["255616"],"_bbp_topic_status":["unanswered"],"_bbp_status":["publish"],"_bbp_topic_id":["49501"],"_bbp_forum_id":["27792"],"_bbp_engagement":["22555","181494"],"_bbp_voice_count":["2"],"_bbp_reply_count":["5"],"_bbp_last_reply_id":["131909"],"_bbp_last_active_id":["131909"],"_bbp_last_active_time":["2020-11-03 02:22:51"]},"test":"jd_jn"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/49501","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\/49501\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=49501"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}