{"id":29944,"date":"2018-08-06T11:37:11","date_gmt":"2018-08-06T11:37:11","guid":{"rendered":"\/forum\/forums\/topic\/help-needed-in-swirl-velocity-specification-of-2-d-fan-boundary-condition\/"},"modified":"2018-08-06T11:37:11","modified_gmt":"2018-08-06T11:37:11","slug":"help-needed-in-swirl-velocity-specification-of-2-d-fan-boundary-condition","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/help-needed-in-swirl-velocity-specification-of-2-d-fan-boundary-condition\/","title":{"rendered":"Help Needed in Swirl-Velocity Specification of 2-D Fan Boundary Condition"},"content":{"rendered":"<p>I am trying to define a 2-D fan model using the fan boundary condition on a square surface in a 3-D simulation of a room. Eventually, I would like to introduce a tangential velocity profile as a function of radius as instructed in the user guide. However, I am puzzled by how Fluent&nbsp;interprets the tangential velocity since&nbsp;the tangential&nbsp;velocity I get as a result is always less than what I input. Even when I try constant tangential velocity value the resultant tangential velocity seems to be at least factor of 2 less than what I defined as shown in the figure.<\/p>\n<p><\/p>\n<p>I&#8217;ll greatly appreciate your help in clarifying how Fluent&nbsp;uses&nbsp;inputs for tangential velocity? Why don&#8217;t I see&nbsp;the tangential velocity imposed between the hub radius and outer dimension of the boundary surface as I define?<\/p>\n","protected":false},"template":"","class_list":["post-29944","topic","type-topic","status-closed","hentry","topic-tag-actuator-disk-1","topic-tag-fluent"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_old_topic_id":["2113"],"_bbp_old_topic_author_name_id":["Anonymous"],"_bbp_old_is_topic_anonymous_id":["false"],"_bbp_old_closed_status_id":["publish"],"_bbp_author_ip":[null],"_bbp_old_sticky_status_id":["normal"],"_bbp_likes_count":["0","0","0","0","0"],"_btv_view_count":["2388"],"_bbp_subscription":["236829"],"_bbp_topic_status":["unanswered"],"_bbp_status":["publish"],"_bbp_topic_id":["29944"],"_bbp_forum_id":["27792"],"_bbp_engagement":["199","22555","154844","158212","161683","161998"],"_bbp_voice_count":["6"],"_bbp_reply_count":["16"],"_bbp_last_reply_id":["76158"],"_bbp_last_active_id":["76158"],"_bbp_last_active_time":["2019-01-28 11:29:15"]},"test":"erdenh"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/29944","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\/29944\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=29944"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}