{"id":245194,"date":"2022-12-30T17:50:35","date_gmt":"2022-12-30T17:50:35","guid":{"rendered":"\/forum\/forums\/topic\/cant-get-correct-values-for-cl-and-cd-on-a-airfoil\/"},"modified":"2022-12-30T17:50:35","modified_gmt":"2022-12-30T17:50:35","slug":"cant-get-correct-values-for-cl-and-cd-on-a-airfoil","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/cant-get-correct-values-for-cl-and-cd-on-a-airfoil\/","title":{"rendered":"Can&#8217;t get correct values for Cl and Cd on a airfoil"},"content":{"rendered":"<p>Hello, a few days ago I asked help with a mesh, now I have troubles for the validation of a flow around a NACA 4412. I&#8217;m trying at 6&deg; but Cl is too low and Cd too high, tried different models and it&#8217;s the same. Also tried a NACA 0012 with a different type of mesh and it&#8217;s the same. I&#8217;m leaving a few pictures of the mesh and setup.&nbsp;<\/p>\n<p><img decoding=\"async\" src=\"\/forum\/wp-content\/uploads\/sites\/2\/2022\/12\/30-12-2022-1672422342-1.PNG\" alt=\"\"><\/p>\n<p><img decoding=\"async\" src=\"\/forum\/wp-content\/uploads\/sites\/2\/2022\/12\/30-12-2022-1672422366-2.PNG\" alt=\"\"><\/p>\n<p><img decoding=\"async\" src=\"\/forum\/wp-content\/uploads\/sites\/2\/2022\/12\/30-12-2022-1672422394-3.PNG\" alt=\"\"><\/p>\n<p><img decoding=\"async\" src=\"\/forum\/wp-content\/uploads\/sites\/2\/2022\/12\/30-12-2022-1672422421-4.PNG\" alt=\"\"><\/p>\n<p><img decoding=\"async\" src=\"\/forum\/wp-content\/uploads\/sites\/2\/2022\/12\/30-12-2022-1672422432-5.PNG\" alt=\"\"><\/p>\n<p><img decoding=\"async\" src=\"\/forum\/wp-content\/uploads\/sites\/2\/2022\/12\/30-12-2022-1672422491-7.PNG\" alt=\"\"><\/p>\n<p>Probably I&#8217;m doing something wrong. Thanks.<\/p>\n","protected":false},"template":"","class_list":["post-245194","topic","type-topic","status-closed","hentry","topic-tag-fluent-cfd-ansys-1","topic-tag-2d-airfoil"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_subscription":["271289","15180","296943"],"_bbp_author_ip":["23.48.209.109"]," _bbp_last_reply_id":["0"]," _bbp_likes_count":["0"],"_btv_view_count":["3273"],"_bbp_topic_status":["unanswered"],"_bbp_status":["publish"],"_bbp_topic_id":["245194"],"_bbp_forum_id":["27792"],"_bbp_engagement":["15180","271289","296943"],"_bbp_voice_count":["3"],"_bbp_reply_count":["11"],"_bbp_last_reply_id":["314100"],"_bbp_last_active_id":["314100"],"_bbp_last_active_time":["2023-10-31 11:28:06"]},"test":"bianchini-1857628studenti-uniroma1-it"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/245194","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\/245194\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=245194"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}