{"id":233248,"date":"2022-08-18T17:18:40","date_gmt":"2022-08-18T17:18:40","guid":{"rendered":"\/forum\/forums\/topic\/what-is-the-signification-of-a-very-small-y-value\/"},"modified":"2022-08-18T17:18:40","modified_gmt":"2022-08-18T17:18:40","slug":"what-is-the-signification-of-a-very-small-y-value","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/what-is-the-signification-of-a-very-small-y-value\/","title":{"rendered":"What is the signification of a very small Y+ value ?"},"content":{"rendered":"<p>Hi everyone ?<\/p>\n<p>I am simulating airflow over a wing. The flow is turbulent, so I have put a 6 inflation layer near the wall, the height of the first is 4 micrometers with a progression rate of 1.1.&nbsp;<\/p>\n<p>My problem is the next :&nbsp;<\/p>\n<p>The value of the contours of Y+ is minimal (order of e-10)&nbsp;&nbsp;<\/p>\n<p>What is the significance of such a small Y+? Do I have well resolved my flow near the wall or is there a problem somewhere?&nbsp;<\/p>\n<p>As a remark, the computation has well converged ( residual of e-8 reached), and the lift coefficient curve has reached a constant value (plateau) at the end of the computation&nbsp;<\/p>\n<p>Thank you a lot<\/p>\n<p>I have used Fensap for the aerodynamic part of the computation ( the equivalent of fluent) \/ Turbulence model is spalart Allmaras&nbsp;<\/p>\n","protected":false},"template":"","class_list":["post-233248","topic","type-topic","status-closed","hentry"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_subscription":["1247","261248"],"_bbp_author_ip":["66.198.8.115"]," _bbp_last_reply_id":["0"]," _bbp_likes_count":["0"],"_btv_view_count":["530"],"_bbp_topic_status":["unanswered"],"_bbp_status":["publish"],"_bbp_topic_id":["233248"],"_bbp_forum_id":["27792"],"_bbp_engagement":["1247","261248"],"_bbp_voice_count":["2"],"_bbp_reply_count":["1"],"_bbp_last_reply_id":["233302"],"_bbp_last_active_id":["233302"],"_bbp_last_active_time":["2022-08-19 11:48:39"]},"test":"aero2020"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/233248","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\/233248\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=233248"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}