{"id":51348,"date":"2021-01-16T17:41:30","date_gmt":"2021-01-16T17:41:30","guid":{"rendered":"\/forum\/forums\/topic\/diverging-immediately-after-enabling-the-species-mass-transfer\/"},"modified":"2021-01-16T17:41:30","modified_gmt":"2021-01-16T17:41:30","slug":"diverging-immediately-after-enabling-the-species-mass-transfer","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/diverging-immediately-after-enabling-the-species-mass-transfer\/","title":{"rendered":"Diverging immediately after enabling the species mass transfer"},"content":{"rendered":"<p>I am running a transient simulation of gas absorption in liquid with a mixture model. Initially, I ran case without invoking the species mass transfer, where the has run without any error. Then, I activated the species mass transfer, then immediately the case is diverging. how to resolve this and what are the reasons for this?.The error is shown here:nReversed flow on 4240 faces of pressure-outlet 5.Stabilizing pressure coupled to enhance linear solver robustness.Stabilizing pressure coupled using GMRES to enhance linear solver robustness.Experiencing convergence difficulties &#8211; temporarily relaxing and trying again&#8230;nnExperiencing convergence difficulties &#8211; temporarily relaxing and trying again&#8230;nnExperiencing convergence difficulties &#8211; temporarily relaxing and trying again&#8230;nnExperiencing convergence difficulties &#8211; temporarily relaxing and trying again&#8230;nStabilizing pressure coupled to enhance linear solver robustness.nStabilizing pressure coupled using GMRES to enhance linear solver robustness.nnExperiencing convergence difficulties &#8211; temporarily relaxing and trying again&#8230;nnDivergence detected in AMG solver: pressure coupled Stabilizing liq-species-0 to enhance linear solver robustness.nStabilizing liq-species-0 using GMRES to enhance linear solver robustness.nnDivergence detected in AMG solver: liq-species-0 Stabilizing gas-species-0 to enhance linear solver robustness.nStabilizing gas-species-0 using GMRES to enhance linear solver robustness.nnDivergence detected in AMG solver: gas-species-0 Stabilizing temperature to enhance linear solver robustness.nStabilizing temperature using GMRES to enhance linear solver robustness.nnDivergence detected in AMG solver: temperature Stabilizing vof-1 to enhance linear solver robustness.nStabilizing vof-1 using GMRES to enhance linear solver robustness.nnDivergence detected in AMG solver: vof-1nDivergence detected in AMG solver: pressure couplednDivergence detected in AMG solver: liq-species-0nDivergence detected in AMG solver: gas-species-0nDivergence detected in AMG solver: temperaturenDivergence detected in AMG solver: vof-1nDivergence detected in AMG solver: pressure couplednDivergence detected in AMG solver: liq-species-0nDivergence detected in AMG solver: gas-species-0nDivergence detected in AMG solver: temperaturenDivergence detected in AMG solver: vof-1nDivergence detected in AMG solver: pressure couplednDivergence detected in AMG solver: liq-species-0nDivergence detected in AMG solver: gas-species-0nDivergence detected in AMG solver: temperaturenDivergence detected in AMG solver: vof-1nError at host: floating point exceptionnError at Node 0: floating point exceptionnError at Node 1: floating point exceptionnError at Node 2: floating point exceptionnError at Node 3: floating point exceptioError: floating point exceptionnError Object: #f<\/p>\n","protected":false},"template":"","class_list":["post-51348","topic","type-topic","status-closed","hentry","topic-tag-diverging"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_old_topic_id":["23612"],"_bbp_old_topic_author_name_id":["Anonymous"],"_bbp_old_is_topic_anonymous_id":["false"],"_bbp_old_closed_status_id":["publish"],"_bbp_author_ip":["\u000e???"],"_bbp_old_sticky_status_id":["normal"],"_bbp_likes_count":["0"],"_btv_view_count":["475"],"_bbp_subscription":["237650"],"_bbp_topic_status":["unanswered"],"_bbp_status":["publish"],"_bbp_topic_id":["51348"],"_bbp_forum_id":["27792"],"_bbp_engagement":["199","159952","184487"],"_bbp_voice_count":["3"],"_bbp_reply_count":["8"],"_bbp_last_reply_id":["139113"],"_bbp_last_active_id":["139113"],"_bbp_last_active_time":["2021-01-18 11:12:09"]},"test":"snr1"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/51348","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\/51348\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=51348"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}