{"id":301237,"date":"2023-08-13T20:03:41","date_gmt":"2023-08-13T20:03:41","guid":{"rendered":"\/forum\/forums\/topic\/bingham-fluid-concentric-rotating-cylinders\/"},"modified":"2023-08-13T20:22:07","modified_gmt":"2023-08-13T20:22:07","slug":"bingham-fluid-concentric-rotating-cylinders","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/bingham-fluid-concentric-rotating-cylinders\/","title":{"rendered":"Bingham Fluid – Concentric Rotating Cylinders"},"content":{"rendered":"

I’m trying to compare the analytical solution of a bingham fluid, laminar in steady state in 2 cases:<\/p>\n

Case 1: External wall rotating 0.5 rad\/s and internal wall stationary<\/p>\n

Case 2: Internal wall rotating 0.5 rad\/s and external wall stationary<\/p>\n

For case 2 the results are very satisfatory, with a max deviation of 2,04%, Deviation % = (V analytc – V simulate)\/V analytc *100<\/p>\n

<\/a><\/a><\/p>\n

But using the same parameters for the Case 1 the deviation is around 60%, I’ve already tried to change the solve method or initial valus but doesnt changed a lot. I will post here the parameters I’m using.<\/p>\n

<\/a><\/p>\n

<\/a><\/p>\n

Here are the parameters I’m using for now in both cases:<\/p>\n

<\/p>\n

<\/a><\/p>\n

<\/a><\/p>\n

<\/p>\n

<\/a> or <\/a><\/p>\n

<\/a><\/a><\/p>\n","protected":false},"template":"","class_list":["post-301237","topic","type-topic","status-closed","hentry"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_subscription":["291367","199"],"_bbp_author_ip":["23.206.193.146"]," _bbp_last_reply_id":["0"]," _bbp_likes_count":["0"],"_btv_view_count":["530"],"_edit_lock":["1696100551:227446"],"_bbp_topic_status":["unanswered"],"_bbp_status":["publish"],"_bbp_topic_id":["301237"],"_bbp_forum_id":["27792"],"_bbp_engagement":["199","291367"],"_bbp_voice_count":["2"],"_bbp_reply_count":["5"],"_bbp_last_reply_id":["302424"],"_bbp_last_active_id":["302424"],"_bbp_last_active_time":["2023-08-21 10:28:16"]},"test":"marcos-silvestreufu-br"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/301237","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\/301237\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=301237"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}