{"id":178854,"date":"2023-08-25T12:15:30","date_gmt":"2023-08-25T12:15:30","guid":{"rendered":"\/knowledge\/forums\/topic\/why-is-the-velocity-invariant-q-changing-accross-a-rotor-stator-interface\/"},"modified":"2023-08-25T12:15:30","modified_gmt":"2023-08-25T12:15:30","slug":"why-is-the-velocity-invariant-q-changing-accross-a-rotor-stator-interface","status":"publish","type":"topic","link":"https:\/\/innovationspace.ansys.com\/knowledge\/forums\/topic\/why-is-the-velocity-invariant-q-changing-accross-a-rotor-stator-interface\/","title":{"rendered":"Why is the Velocity. Invariant Q changing accross a rotor stator interface"},"content":{"rendered":"<p>The velocity gradient is computed with respect to relative velocities. This does not account for system rotation automatically.  see attached document <\/p>\n<p>Attachments:<br \/>\n1. <a href=https:\/\/ansys13.ansys.com\/KnowledgeArticles\/Phase-3\/2044308\/2044308_solution.pdf>2044308_solution.pdf<\/a><\/p>\n","protected":false},"template":"","class_list":["post-178854","topic","type-topic","status-publish","hentry","topic-tag-17-2","topic-tag-cfx","topic-tag-fluid-dynamics","topic-tag-frame-of-reference","topic-tag-relative-velocity","topic-tag-rotating-machinery","topic-tag-turbulence-acoustics","topic-tag-velocity-invariant"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_wp_page_template":["default"],"siebel_km_number":["2044308"],"_bbp_last_active_time":["8\/25\/2023 20:20"],"_bbp_forum_id":["27796"],"_bbp_author_ip":["23.56.168.180"],"application_name":["CFX"],"family":["Fluid Dynamics"],"km_published_date":["2016-10-19T00:00:00.000Z"],"product_version":["17"],"_btv_view_count":["433"]},"test":"solution"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/knowledge\/wp-json\/wp\/v2\/topics\/178854","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/innovationspace.ansys.com\/knowledge\/wp-json\/wp\/v2\/topics"}],"about":[{"href":"https:\/\/innovationspace.ansys.com\/knowledge\/wp-json\/wp\/v2\/types\/topic"}],"version-history":[{"count":0,"href":"https:\/\/innovationspace.ansys.com\/knowledge\/wp-json\/wp\/v2\/topics\/178854\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/knowledge\/wp-json\/wp\/v2\/media?parent=178854"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}