{"id":52979,"date":"2021-03-07T14:31:33","date_gmt":"2021-03-07T14:31:33","guid":{"rendered":"\/forum\/forums\/topic\/how-to-add-additional-species-diffusion-term-in-fluent\/"},"modified":"2021-03-07T14:31:33","modified_gmt":"2021-03-07T14:31:33","slug":"how-to-add-additional-species-diffusion-term-in-fluent","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/how-to-add-additional-species-diffusion-term-in-fluent\/","title":{"rendered":"How to add additional species diffusion term in FLUENT"},"content":{"rendered":"<div class=\"Item-Body\">\n<div class=\"Message userContent\">\n<p>I want to include additional species diffusion term through UDF in FLUENT as in formula below.<\/p>\n<p>The first term on the right can be included in mass diffusivity using DEFINE_DIFFUSIVITY macro in species transport model having unit to be (m^2\/s) but the next term have unit to be (kg\/m.s) how and where to include it?<\/p>\n<div class=\"embedExternal embedImage\">\n<div class=\"embedExternal-content\">\n<a class=\"embedImage-link\" href=\"https:\/\/us.v-cdn.net\/6032193\/uploads\/D3CTHLKIF2KU\/diffusion-term.png\" rel=\"nofollow noopener\" target=\"_blank\"><br \/>\n<img decoding=\"async\" class=\"embedImage-img\" src=\"https:\/\/us.v-cdn.net\/6032193\/uploads\/D3CTHLKIF2KU\/diffusion-term.png\" alt=\"diffusion term.png\" \/><br \/>\n<\/a><\/p>\n","protected":false},"template":"","class_list":["post-52979","topic","type-topic","status-closed","hentry"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_old_topic_id":["25289"],"_bbp_old_topic_author_name_id":["Anonymous"],"_bbp_old_is_topic_anonymous_id":["false"],"_bbp_old_closed_status_id":["publish"],"_bbp_author_ip":["*\u0002???@??????\t?1\u0003"],"_bbp_old_sticky_status_id":["normal"],"_bbp_likes_count":["0"],"_btv_view_count":["1957"],"_bbp_subscription":["248167"],"_bbp_topic_status":["unanswered"],"_bbp_status":["publish"],"_bbp_topic_id":["52979"],"_bbp_forum_id":["27792"],"_bbp_engagement":["199","22555","173939","184487","186762","187424"],"_bbp_voice_count":["6"],"_bbp_reply_count":["28"],"_bbp_last_reply_id":["149125"],"_bbp_last_active_id":["149125"],"_bbp_last_active_time":["2021-04-01 10:14:19"]},"test":"sowmiya"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/52979","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\/52979\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=52979"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}