{"id":403172,"date":"2025-01-01T23:14:09","date_gmt":"2025-01-01T23:14:09","guid":{"rendered":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/ratio-of-mass-fractions\/"},"modified":"2025-01-01T23:14:09","modified_gmt":"2025-01-01T23:14:09","slug":"ratio-of-mass-fractions","status":"publish","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/ratio-of-mass-fractions\/","title":{"rendered":"Ratio of mass fractions"},"content":{"rendered":"<p>&lt;p&gt;Hi all,&nbsp;&lt;\/p&gt;&lt;p&gt;Im simulating the mixing of hydrogen and air in a 2d geometry and i want to compute and plot for each point of the grid the following ratio (see below), something like a contour plot. The mass flow rates are defined as integral over the area of density, normal velocity and mass fraction. How can I compute this?&lt;\/p&gt;&lt;p&gt;&nbsp;&lt;\/p&gt;&lt;p&gt;<img decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2025\/01\/01-01-2025-1735772754-mceclip0.png\" \/>&lt;\/p&gt;<\/p>\n","protected":false},"template":"","class_list":["post-403172","topic","type-topic","status-publish","hentry"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_forum_id":["27792"],"_bbp_topic_id":["403172"],"_bbp_author_ip":["185.156.14.181"],"_bbp_last_reply_id":["403888"],"_bbp_last_active_id":["403888"],"_bbp_last_active_time":["2025-01-07 11:34:00"],"_bbp_reply_count":["3"],"_bbp_reply_count_hidden":["0"],"_bbp_voice_count":["2"],"_bbp_engagement":["470005","199"],"_btv_view_count":["134"],"_bbp_topic_status":["unanswered"],"_bbp_subscription":["199","470005"]},"test":"vikoviko3009gmail-com"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/403172","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\/403172\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=403172"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}