{"id":287501,"date":"2023-06-07T10:12:18","date_gmt":"2023-06-07T10:12:18","guid":{"rendered":"\/forum\/forums\/topic\/understanding-the-post-cfd-pressure\/"},"modified":"2023-06-07T10:12:18","modified_gmt":"2023-06-07T10:12:18","slug":"understanding-the-post-cfd-pressure","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/understanding-the-post-cfd-pressure\/","title":{"rendered":"Understanding the Post CFD Pressure"},"content":{"rendered":"<p>As per the definination in the ansys manual<\/p>\n<p>Abs. Pressure = Operting Press + Guage Pressure but in the case of incompressible fluid or fluid with constant density, must not used the operting pressure. In that case, the results we see on the Post CFD results must be Guage pressure = abs pressure.&nbsp;<\/p>\n<p>I am not sure, I am getting negative pressure at the outlet, whereas my outlet is at the 0 psig&nbsp; and my inlet is at 25psi gauge.<\/p>\n<p>What are the possible reason for getting the negative pressure in the system? Meshing issue, boundary condition, or fluid properties (using water).&nbsp;<\/p>\n<p>&nbsp;<img decoding=\"async\" src=\"\/forum\/wp-content\/uploads\/sites\/2\/2023\/06\/07-06-2023-1686132638-mceclip0.png\"><\/p>\n","protected":false},"template":"","class_list":["post-287501","topic","type-topic","status-closed","hentry","topic-tag-absolute-pressure-1","topic-tag-cfd-post","topic-tag-fluid","topic-tag-gauge-pressure","topic-tag-meshing"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_subscription":["166775","18096"],"_bbp_author_ip":["168.143.243.14"]," _bbp_last_reply_id":["0"]," _bbp_likes_count":["0"],"_btv_view_count":["3142"],"_bbp_topic_status":["unanswered"],"_bbp_status":["publish"],"_bbp_topic_id":["287501"],"_bbp_forum_id":["27792"],"_bbp_engagement":["18096","166775"],"_bbp_voice_count":["2"],"_bbp_reply_count":["1"],"_bbp_reply_count_hidden":["1"],"_bbp_last_reply_id":["287770"],"_bbp_last_active_id":["287770"],"_bbp_last_active_time":["2023-06-08 15:43:10"]},"test":"88134c33056105b8e0ece9694a640e55816f65a4"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/287501","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\/287501\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=287501"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}