{"id":386316,"date":"2024-09-24T10:26:41","date_gmt":"2024-09-24T10:26:41","guid":{"rendered":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/386316\/"},"modified":"2024-09-24T10:26:41","modified_gmt":"2024-09-24T10:26:41","slug":"386316","status":"publish","type":"reply","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/386316\/","title":{"rendered":"Reply To: Drone zero lift help"},"content":{"rendered":"<p>&lt;p&gt;Again, with mrf (reference) frame the mesh doesn&#8217;t move so can&#8217;t become twisted. That would typically have an interior zone between it and the outer domain. So not sure what&#8217;s happened. With mrf if you&#8217;re not quite there with the vector it&#8217;ll just give some slightly odd rotation effects in the velocity field.&nbsp;&lt;\/p&gt;&lt;p&gt;I&#8217;d expect some value of lift\/drag regardless as it&#8217;s near impossible to not see a number. If you report the value from the panel rather than plotting is it still precisely zero? If you put a contour through the rotor plane (vertical) how does the velocity field look?&lt;\/p&gt;<\/p>\n","protected":false},"template":"","class_list":["post-386316","reply","type-reply","status-publish","hentry"],"aioseo_notices":[],"acf":[],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/replies\/386316","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":0,"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/replies\/386316\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=386316"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}