{"id":358615,"date":"2024-03-23T10:28:28","date_gmt":"2024-03-23T10:28:28","guid":{"rendered":"\/forum\/forums\/topic\/mismatch-area\/"},"modified":"2024-03-23T10:28:28","modified_gmt":"2024-03-23T10:28:28","slug":"mismatch-area","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/mismatch-area\/","title":{"rendered":"Mismatch area"},"content":{"rendered":"<p>Hello,&nbsp;&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>I&rsquo;m running a 2D simulation of a tube with two faces, each having a diameter of 15 mm.<\/p>\n<p>On one side, there&rsquo;s a volume flow rate of&nbsp;<span class=\"katex\"><span class=\"katex-html\" aria-hidden=\"true\"><span class=\"base\"><span class=\"mord\">6<\/span><span class=\"mbin\">&times;<\/span><\/span><span class=\"base\"><span class=\"mord\">1<\/span><span class=\"mord\">0<span class=\"msupsub\"><span class=\"vlist-t\"><span class=\"vlist-r\"><span class=\"vlist\"><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\">&minus;4<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span> m^3\/s.<\/p>\n<p>On the other side, there&rsquo;s a pressure outlet of 10 Pa.<\/p>\n<p>However, when I calculate the area, the order of magnitude is significantly different from what I expected. The area should be <span class=\"katex\"><span class=\"katex-html\" aria-hidden=\"true\"><span class=\"base\"><span class=\"mord\">1.5<\/span><span class=\"mbin\">&times;<\/span><\/span><span class=\"base\"><span class=\"mord\">1<\/span><span class=\"mord\">0<span class=\"msupsub\"><span class=\"vlist-t\"><span class=\"vlist-r\"><span class=\"vlist\"><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\">&minus;4<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span> m^2, but the result from ANSYS is&nbsp;<span class=\"katex\"><span class=\"katex-html\" aria-hidden=\"true\"><span class=\"base\"><span class=\"mord\">1.5<\/span><span class=\"mbin\">&times;<\/span><\/span><span class=\"base\"><span class=\"mord\">1<\/span><span class=\"mord\">0<span class=\"msupsub\"><span class=\"vlist-t\"><span class=\"vlist-r\"><span class=\"vlist\"><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\">&minus;2<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span> m^2. Can anyone explain why there&rsquo;s such a large discrepancy?<\/p>\n<p>Additionally, when I applied a scale factor to correct the area, the outlet pressure automatically changed. Instead of remaining at 10 Pa, it increased to 24 Pa. Why did this happen?<\/p>\n<p>&nbsp;<\/p>\n<p>Thanks&nbsp;<\/p>\n","protected":false},"template":"","class_list":["post-358615","topic","type-topic","status-closed","hentry"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_subscription":["62887","199"],"_bbp_author_ip":["23.206.193.146"]," _bbp_last_reply_id":["0"]," _bbp_likes_count":["0"],"_bbp_likes_count":["0"],"_btv_view_count":["233"],"_bbp_topic_status":["unanswered"],"_bbp_topic_id":["358615"],"_bbp_forum_id":["27792"],"_bbp_engagement":["199","62887"],"_bbp_voice_count":["2"],"_bbp_reply_count":["5"],"_bbp_last_reply_id":["359986"],"_bbp_last_active_id":["359986"],"_bbp_last_active_time":["2024-04-02 12:29:08"]},"test":"andreacarolina-heras01estudiant-upf-edu"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/358615","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\/358615\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=358615"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}