{"id":338462,"date":"2023-12-13T16:56:28","date_gmt":"2023-12-13T16:56:28","guid":{"rendered":"\/forum\/forums\/topic\/flow-variable-macros-for-boundary-faces\/"},"modified":"2023-12-13T16:56:28","modified_gmt":"2023-12-13T16:56:28","slug":"flow-variable-macros-for-boundary-faces","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/flow-variable-macros-for-boundary-faces\/","title":{"rendered":"Flow Variable Macros for Boundary Faces"},"content":{"rendered":"<p>I am writing a UDF for Fluent, and I need to access the values of flow variables on the boundary faces at the previous time step. For cell variables at the previous time step, I can access them using the C_U_M1(c,t) macro. Is there a similar data access macro available for accessing the variables on the boundary&nbsp; faces at the previous time step? Or is there an alternative way to access this data?<\/p>\n","protected":false},"template":"","class_list":["post-338462","topic","type-topic","status-closed","hentry","topic-tag-fluent","topic-tag-udf","topic-tag-udf-macro"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_subscription":["304273","199","337669"],"_bbp_author_ip":["23.206.193.154"]," _bbp_last_reply_id":["0"]," _bbp_likes_count":["0"],"_bbp_likes_count":["1"],"_btv_view_count":["299"],"_bbp_topic_status":["unanswered"],"_bbp_status":["publish"],"_bbp_topic_id":["338462"],"_bbp_forum_id":["27792"],"_bbp_engagement":["199","304273"],"_bbp_voice_count":["2"],"_bbp_reply_count":["8"],"_bbp_reply_count_hidden":["1"],"_bbp_last_reply_id":["339297"],"_bbp_last_active_id":["339297"],"_bbp_last_active_time":["2023-12-19 10:03:23"]},"test":"liumyhhu163-com"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/338462","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\/338462\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=338462"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}