{"id":459474,"date":"2026-06-08T12:47:47","date_gmt":"2026-06-08T12:47:47","guid":{"rendered":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/continuity-convergence-problem-multifluid-vof\/"},"modified":"2026-06-08T12:47:47","modified_gmt":"2026-06-08T12:47:47","slug":"continuity-convergence-problem-multifluid-vof","status":"publish","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/continuity-convergence-problem-multifluid-vof\/","title":{"rendered":"Continuity Convergence problem: Multifluid VOF"},"content":{"rendered":"<p>&lt;p&gt;Hi,&lt;\/p&gt;&lt;p&gt;I am modeling two-phase with euler euler, multifluid VOF approach. The approach I am using is that&lt;br&gt;Phase 1: H2O, OH-, H2 and O2&lt;br&gt;Phase 2: H2 and O2&lt;br&gt;In species model, I defined the electrochemical reaction for phase 1 which bascially produce dissolved H2 and O2 in the solution. In multiphase tab, under phase transfer I defined mass transfer of dissolved H2 and O2 to phase 2 (H2 and O2), respectively via Henry mechanism.&lt;br&gt;The problem I am facing that as soon as I enable two-phase flow the continiuity does not converge. I attached the residual plot for kind consideration. Here I turned of the generation of O2 that&#8217;s why o2-phase-2 is showing zero.&lt;\/p&gt;&lt;p&gt;Please let me know what should I do so that continuity will also converge or guide me what should I look into my setup.&lt;\/p&gt;&lt;p&gt;Regards,&lt;\/p&gt;&lt;p&gt;Muhammad Asim Sarwar&lt;\/p&gt;&lt;p&gt;<img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2026\/06\/08-06-2026-1780922714-mceclip0.png\" width=\"1045\" height=\"741\" \/>&lt;\/p&gt;<\/p>\n","protected":false},"template":"","class_list":["post-459474","topic","type-topic","status-publish","hentry"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_forum_id":["27792"],"_bbp_topic_id":["459474"],"_bbp_subscription":["680821","199"],"_bbp_author_ip":["193.166.77.53"],"_bbp_last_reply_id":["459491"],"_bbp_last_active_id":["459491"],"_bbp_last_active_time":["2026-06-08 14:47:05"],"_bbp_reply_count":["5"],"_bbp_reply_count_hidden":["0"],"_bbp_voice_count":["2"],"_bbp_engagement":["680821","199"],"_btv_view_count":["22"],"_bbp_topic_status":["unanswered"]},"test":"muhammad-sarwarlut-fi"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/459474","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\/459474\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=459474"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}