{"id":379176,"date":"2024-08-15T14:41:25","date_gmt":"2024-08-15T14:41:25","guid":{"rendered":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/379176\/"},"modified":"2024-08-15T14:45:59","modified_gmt":"2024-08-15T14:45:59","slug":"379176","status":"publish","type":"reply","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/379176\/","title":{"rendered":"Reply To: Aeroacoustic (reference) atmospheric pressure &#8211; fluctuation NOT around zero"},"content":{"rendered":"<p>&lt;p&gt;In the theory guide is the general following definition:&lt;\/p&gt;&lt;p&gt;<img decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2024\/08\/15-08-2024-1723732546-mceclip0.png\" \/>&lt;\/p&gt;&lt;p&gt;And then after the derivation and some assumptions from the stokes FWH formulation it gives the following relations for the pressure fluctuation p&#8217; (T thickness and L loading term):&lt;\/p&gt;&lt;p&gt;<img decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2024\/08\/15-08-2024-1723732637-mceclip1.png\" \/>&lt;\/p&gt;&lt;p&gt;I dont get where it calculates the average pressure (like in the first relation p_0), which must be subtracted to get a fluctuation around zero???&lt;\/p&gt;&lt;p&gt;There was a similiar post, but no answer yet.&lt;\/p&gt;&lt;p&gt;https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/acoustic-pressure-calculation-les-fh-w\/&lt;\/p&gt;&lt;p&gt;&nbsp;&lt;\/p&gt;&lt;p&gt;&nbsp;&lt;\/p&gt;&lt;p&gt;&nbsp;&lt;\/p&gt;<\/p>\n","protected":false},"template":"","class_list":["post-379176","reply","type-reply","status-publish","hentry"],"aioseo_notices":[],"acf":[],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/replies\/379176","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/replies"}],"about":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/types\/reply"}],"version-history":[{"count":1,"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/replies\/379176\/revisions"}],"predecessor-version":[{"id":379178,"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/replies\/379176\/revisions\/379178"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=379176"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}