{"id":377494,"date":"2024-08-07T07:15:54","date_gmt":"2024-08-07T07:15:54","guid":{"rendered":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/mass-source-as-a-function-of-electric-current-density\/"},"modified":"2024-08-07T07:15:54","modified_gmt":"2024-08-07T07:15:54","slug":"mass-source-as-a-function-of-electric-current-density","status":"publish","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/mass-source-as-a-function-of-electric-current-density\/","title":{"rendered":"Mass source as a function of electric current density"},"content":{"rendered":"<p>Hi,&nbsp;<\/p>\n<p>For modeling the electrochemical processes involved in water electrolysis I need to impose the electrode gas generation rate as a function of electric current density on the electrode surface. 2-phase Euler-Euler model has been chosen for multiphase flow and the gas generation function, written in <span style=\"text-decoration: underline\"><strong>Named Expressions,<\/strong><\/span> is called in the mass source term of phase-2 in the cells adjacent to the electrodes. However the solution freezes after few itereations leading to the error:<\/p>\n<pre>Error at host: Internal error at line 2388 in file 'bc\\src\\profile.c'.&nbsp; Too many profiles<\/pre>\n<p>Interestingly, any function in the mass source term leads to the same error and it has nothing to do with the electric potential solution; even a function of temperature, pressure or any other variable produces the same error. Only if the gas generation rate is taken as constant then the solution continues without any problem.<\/p>\n<p>Could this problem be related to <strong>Expressions<\/strong>? Any thoughts on this will be really appreciated as nothing could resolve this so far. Thanks.<\/p>\n<p>&nbsp;<\/p>\n","protected":false},"template":"","class_list":["post-377494","topic","type-topic","status-publish","hentry","topic-tag-multiphase_models-1","topic-tag-electric-potential-2","topic-tag-electrochemistry","topic-tag-electrolysis-1","topic-tag-euler-euler"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_subscription":["20808","199","500739"],"_bbp_author_ip":["81.173.65.174"]," _bbp_last_reply_id":["0"]," _bbp_likes_count":["0"],"_btv_view_count":["305"],"_bbp_topic_status":["unanswered"],"_bbp_topic_id":["377494"],"_bbp_forum_id":["27792"],"_bbp_engagement":["199","20808","500739"],"_bbp_voice_count":["3"],"_bbp_reply_count":["5"],"_bbp_last_reply_id":["404411"],"_bbp_last_active_id":["404411"],"_bbp_last_active_time":["2025-01-10 10:29:14"]},"test":"farzanbattolysersystems-com"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/377494","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\/377494\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=377494"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}