{"id":292151,"date":"2023-07-09T03:05:35","date_gmt":"2023-07-09T03:05:35","guid":{"rendered":"\/forum\/forums\/topic\/y-in-standard-wall-function\/"},"modified":"2023-07-09T03:07:51","modified_gmt":"2023-07-09T03:07:51","slug":"y-in-standard-wall-function","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/y-in-standard-wall-function\/","title":{"rendered":"y+ in standard wall function"},"content":{"rendered":"

Dear sir,<\/p>\n

I am woking in a turbulent flow simulation, using the k-epsilon and standard wall function. I am confused with what the ANSYS manual indicates for the Standard wall function: “The lower limit always lies in the order of y* ~15. Below this limit, wall functions will typically deteriorate and the accuracy of the solutions cannot be maintained”.<\/p>\n

I understand that the y+ must stay above 30 to be able to work with this wall function, however, the software provides me with a y+ of 33.6 and y* of 33.5, but when I calculate the y+ I get 83 as a result. Could you please help to understand why that is?<\/p>\n

Thank you.<\/p>\n

 <\/p>\n","protected":false},"template":"","class_list":["post-292151","topic","type-topic","status-closed","hentry","topic-tag-fullydevelopedturbulentflow-1","topic-tag-y-1"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t