{"id":161711,"date":"2023-01-25T07:16:44","date_gmt":"2023-01-25T07:16:44","guid":{"rendered":"\/knowledge\/forums\/topic\/how-to-calculate-swirl-in-fluent\/"},"modified":"2023-07-31T12:35:45","modified_gmt":"2023-07-31T12:35:45","slug":"how-to-calculate-swirl-in-fluent","status":"publish","type":"topic","link":"https:\/\/innovationspace.ansys.com\/knowledge\/forums\/topic\/how-to-calculate-swirl-in-fluent\/","title":{"rendered":"How to calculate swirl in Fluent?"},"content":{"rendered":"<p>You can do this through a surface integral as follows:  The swirl number is defined as the radius-weighted ratio of axial flux of angular momentum to the axial flux of axial momentum.  SWIRL_NUMBER = FLOWRATE(radius*tangential-velocity) \/ FLOWRATE(radius*axial-velocity)  You can use custom field functions to obtain radius*tangential-velocity and radius*axial-velocity. Some users use a reference radius in the denominator such that: Denominator = radius_ref*FLOWRATE(axial-velocity)<\/p>\n","protected":false},"template":"","class_list":["post-161711","topic","type-topic","status-publish","hentry","topic-tag-4457","topic-tag-fluent","topic-tag-fluid-dynamics","topic-tag-general","topic-tag-general-fluent"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_wp_page_template":["default"],"_bbp_forum_id":["27796"],"_bbp_author_ip":["23.56.168.180"],"_bbp_last_active_time":["1-24-2023  20:20:32"],"_btv_view_count":["5256"],"siebel_km_number":["2002372"],"product_version":["14"],"km_published_date":["2009-09-11T14:21:46.000Z"],"family":["Fluid Dynamics"],"application_name":["FLUENT"]},"test":"articlesansys-com"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/knowledge\/wp-json\/wp\/v2\/topics\/161711","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\/161711\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/knowledge\/wp-json\/wp\/v2\/media?parent=161711"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}