{"id":232945,"date":"2022-08-14T16:49:27","date_gmt":"2022-08-14T16:49:27","guid":{"rendered":"\/forum\/forums\/topic\/abnormality-in-contour-of-volume-fraction\/"},"modified":"2022-08-14T16:49:27","modified_gmt":"2022-08-14T16:49:27","slug":"abnormality-in-contour-of-volume-fraction","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/abnormality-in-contour-of-volume-fraction\/","title":{"rendered":"Abnormality in Contour of Volume fraction."},"content":{"rendered":"<p>I am trying to study the hydrodynamics of rotating system. Previously, I have run the CFD simulations without using the transport model and the used models were VOF and SST k omega model. and the contours were as follow (one example)<\/p>\n<p><img decoding=\"async\" src=\"\/forum\/wp-content\/uploads\/sites\/2\/2022\/08\/14-08-2022-1660495102-CFD 1 (1).jpg\" alt=\"\"><\/p>\n<p>But to study the mass transfer performance of the same system, I have used the Linearized mass transfer UDF most likly to the one in the UDF manual. To use mass transfer I was to use the mass transport model by using mixture template. So that I can monitor the concetration of the required specie at the outlet. There is nothing in the UDF that can change the hydrodynamics of the system. But I am geting the contours like follow&nbsp;<\/p>\n<p><img decoding=\"async\" src=\"\/forum\/wp-content\/uploads\/sites\/2\/2022\/08\/14-08-2022-1660495291-CFD 2 (1).jpg\" alt=\"\"><\/p>\n<p>Which is abnormal or the one which is wrong. The convergance is good just. I have tried it with different turbulence models, grid numbers, Methods, Multigrid settings but the contours are not changing. What could be the potential cause of this issue.<\/p>\n<p>Your kind reposnse in this regard will be highly appreciated.&nbsp;<\/p>\n<p>Thank you&nbsp;<\/p>\n","protected":false},"template":"","class_list":["post-232945","topic","type-topic","status-closed","hentry","topic-tag-fluent-cfd-ansys-1","topic-tag-ansys-fluent","topic-tag-ansysfluent","topic-tag-mass-transfer","topic-tag-multi-component-mixture","topic-tag-species-transport-model"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_subscription":["259463","199","22555"],"_bbp_author_ip":["23.44.170.21"]," _bbp_last_reply_id":["0"]," _bbp_likes_count":["0"],"_btv_view_count":["648"],"_bbp_topic_status":["unanswered"],"_bbp_status":["publish"],"_bbp_topic_id":["232945"],"_bbp_forum_id":["27792"],"_bbp_engagement":["199","22555","259463"],"_bbp_voice_count":["3"],"_bbp_reply_count":["10"],"_bbp_last_reply_id":["233650"],"_bbp_last_active_id":["233650"],"_bbp_last_active_time":["2022-08-24 05:58:05"]},"test":"abdul-zahirpostgrad-curtin-edu-my"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/232945","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\/232945\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=232945"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}