{"id":163986,"date":"2021-11-15T19:57:24","date_gmt":"2021-11-15T19:57:24","guid":{"rendered":"\/forum\/forums\/topic\/issue-with-skin-friction-coefficient-values\/"},"modified":"2021-11-16T13:14:04","modified_gmt":"2021-11-16T13:14:04","slug":"issue-with-skin-friction-coefficient-values","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/issue-with-skin-friction-coefficient-values\/","title":{"rendered":"Issue with Skin Friction Coefficient Values"},"content":{"rendered":"<div class=\"Item-Body\">\n<div class=\"Message userContent\">\n<p>Hello All,<\/p>\n<p>I am trying to model a basic boundary layer flow over a flat plate for varying speeds, in 2D.<\/p>\n<p>My issue is that the skin friction coefficient values at fixed points along the plate increase when increasing the inlet speed of the model.<\/p>\n<p>I am aware that the skin friction is inversely proportional to the Reynold&#039;s number, and within a set speed, this is visible (as the coefficient value does decrease when travelling along the points on the plate). <\/p>\n<p>I have used a no-slip condition for the plate, along with symmetry for the upper edge of the geometry, with inlet and outlet also defined.<\/p>\n<p>This issue persists with multiple viscous models (i have used laminar, k-omega, k-epsilon, all with the same issue)<\/p>\n<p>I have also conducted a mesh resolution analysis to check if my mesh was fine enough (ended up using 320,000 nodes within the student version). I have included biasing towards the plate as well.<\/p>\n","protected":false},"template":"","class_list":["post-163986","topic","type-topic","status-closed","hentry","topic-tag-2d","topic-tag-ansys-fluent","topic-tag-fluent","topic-tag-fluid","topic-tag-fluid-flow"],"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":["929"],"_bbp_likes_count":["0"],"_bbp_subscription":["240644"],"_bbp_topic_status":["unanswered"],"_bbp_status":["publish"],"_bbp_topic_id":["163986"],"_bbp_forum_id":["27792"],"_bbp_engagement":["25","240644"],"_bbp_voice_count":["2"],"_bbp_reply_count":["1"],"_bbp_last_reply_id":["197766"],"_bbp_last_active_id":["197766"],"_bbp_last_active_time":["2021-11-16 13:14:04"]},"test":"sdm5hw-ac-uk"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/163986","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\/163986\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=163986"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}