{"id":319520,"date":"2023-11-27T04:19:36","date_gmt":"2023-11-27T04:19:36","guid":{"rendered":"\/forum\/forums\/topic\/definition-of-udf-as-a-boundary-condition\/"},"modified":"2023-11-27T04:19:36","modified_gmt":"2023-11-27T04:19:36","slug":"definition-of-udf-as-a-boundary-condition","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/definition-of-udf-as-a-boundary-condition\/","title":{"rendered":"Definition of UDF as a Boundary Condition"},"content":{"rendered":"<p>Dear Madam\/Sir,<\/p>\n<p>I want to investigate the heat transfer effect of ultrasonic vibration. For this purpose, I have formed a basic fluid domain like a smooth tube with L=500 mm (3D) as given in the attachment. I want to apply ultrasonic vibration on the middle section of this domain and I split the surface with the help of the face split tool. After that, I meshed the fluid domain, classically.<\/p>\n<p>After that, I formed a UDF code (DEFINE_PROFILE) to solve the ultrasonic vibration in ANSYS Fluent. At this point, I have a question for you. How do I identify the UDF code as a boundary condition for the middle section wall of the fluid domain? Also, is it required to use the dynamic mesh although there is no solid?<\/p>\n<p>Thank you for the information.<\/p>\n<p>Best regards.&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p><img decoding=\"async\" src=\"\/forum\/wp-content\/uploads\/sites\/2\/2023\/11\/27-11-2023-1701058618-Fig.png\" alt=\"\"><\/p>\n","protected":false},"template":"","class_list":["post-319520","topic","type-topic","status-closed","hentry","topic-tag-boundary-condition","topic-tag-heat-transfer","topic-tag-udf","topic-tag-ultrasonic-sound-waves-1","topic-tag-utrasonic-vibrations-1"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_subscription":["185494","14311"],"_bbp_author_ip":["168.143.243.24"]," _bbp_last_reply_id":["0"]," _bbp_likes_count":["0"],"_btv_view_count":["493"],"_bbp_topic_status":["unanswered"],"_bbp_status":["publish"],"_bbp_topic_id":["319520"],"_bbp_forum_id":["27792"],"_bbp_engagement":["14311","185494"],"_bbp_voice_count":["2"],"_bbp_reply_count":["1"],"_bbp_last_reply_id":["319553"],"_bbp_last_active_id":["319553"],"_bbp_last_active_time":["2023-11-27 09:16:37"]},"test":"emrehangursoy"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/319520","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\/319520\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=319520"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}