{"id":163586,"date":"2021-11-01T01:26:56","date_gmt":"2021-11-01T01:26:56","guid":{"rendered":"\/forum\/forums\/topic\/how-boundary-condition-k-dissipating-into-domain\/"},"modified":"2021-11-04T01:49:12","modified_gmt":"2021-11-04T01:49:12","slug":"how-boundary-condition-k-dissipating-into-domain","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/how-boundary-condition-k-dissipating-into-domain\/","title":{"rendered":"how boundary condition k dissipating into domain?"},"content":{"rendered":"<div class=\"Item-Body\">\n<div class=\"Message userContent\">\n<p>I tried to create a void domain with velocity inlet B.C. on S,E sides, outflow B.C. on N,W sides. For the velocity inlet, I used a UDF describing an atmospheric boundary layer (ABL), setting k=11.01 and the wind direction to be SSE. After reaching convergence (all residual reached 10^-4), the resulting k contour looked like this.<\/p>\n<div class=\"embedExternal embedImage\">\n<div class=\"embedExternal-content\">\n<a class=\"embedImage-link\" href=\"\/forum\/wp-content\/uploads\/forum-uploads\/412\/1BYFKCAWR8DQ.png\" rel=\"nofollow noopener\" target=\"_blank\"><br \/>\n<img decoding=\"async\" class=\"embedImage-img\" src=\"\/forum\/wp-content\/uploads\/forum-uploads\/412\/1BYFKCAWR8DQ.png\" alt=\"image.png\" \/><br \/>\n<\/a><\/p>\n","protected":false},"template":"","class_list":["post-163586","topic","type-topic","status-closed","hentry","topic-tag-ansys-fluent","topic-tag-boundary-conditions","topic-tag-cfd","topic-tag-cfd-post","topic-tag-fluent"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_author_ip":[""],"_bbp_old_reply_author_name_id":["Anonymous"],"_bbp_old_is_reply_anonymous_id":["false"],"_btv_view_count":["247"],"_bbp_likes_count":["0"],"_bbp_subscription":["238335"],"_bbp_topic_status":["unanswered"],"_bbp_status":["publish"],"_bbp_topic_id":["163586"],"_bbp_forum_id":["27792"],"_bbp_engagement":["199","238335"],"_bbp_voice_count":["2"],"_bbp_reply_count":["2"],"_bbp_last_reply_id":["196470"],"_bbp_last_active_id":["196470"],"_bbp_last_active_time":["2021-11-04 01:49:12"]},"test":"anitachenwwwgmail-com"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/163586","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\/163586\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=163586"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}