{"id":164539,"date":"2023-03-17T08:58:00","date_gmt":"2023-03-17T08:58:00","guid":{"rendered":"\/knowledge\/forums\/topic\/my-cfx-run-is-failing-immediately-with-the-following-error-what-mach_fl1-action-return-calling-routine-control_loop-creslt-cvar-what-does-this-mean-and-how-can-i-reso\/"},"modified":"2023-07-31T12:25:46","modified_gmt":"2023-07-31T12:25:46","slug":"my-cfx-run-is-failing-immediately-with-the-following-error-what-mach_fl1-action-return-calling-routine-control_loop-creslt-cvar-what-does-this-mean-and-how-can-i-reso","status":"publish","type":"topic","link":"https:\/\/innovationspace.ansys.com\/knowledge\/forums\/topic\/my-cfx-run-is-failing-immediately-with-the-following-error-what-mach_fl1-action-return-calling-routine-control_loop-creslt-cvar-what-does-this-mean-and-how-can-i-reso\/","title":{"rendered":"My CFX run is failing immediately with the following error:  WHAT = MACH_FL1                  Action = RETURN Calling routine   || = CONTROL_LOOP CRESLT = CVAR   What does this mean and how can I resolve it?"},"content":{"rendered":"<p>This error is most often caused by the presence of an interface between two fluid domains that contain different fluids.  This creates a conflict (since the speeds of sound are different) and throws an error for the Mach number retrieval.<\/p>\n","protected":false},"template":"","class_list":["post-164539","topic","type-topic","status-publish","hentry","topic-tag-2019-r1","topic-tag-bcs-interfaces","topic-tag-cfx","topic-tag-compressible-flow","topic-tag-fluid-dynamics","topic-tag-general","topic-tag-materials"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_wp_page_template":["default"],"_bbp_last_active_time":["3-15-2023  20:20:46"],"_bbp_forum_id":["27796"],"_bbp_author_ip":["23.56.168.180"],"_btv_view_count":["523"],"siebel_km_number":["2058916"],"product_version":["2019 R1"],"km_published_date":["2019-04-10T00:00:00.000Z"],"family":["Fluid Dynamics"],"application_name":["CFX"]},"test":"articlesansys-com"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/knowledge\/wp-json\/wp\/v2\/topics\/164539","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\/164539\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/knowledge\/wp-json\/wp\/v2\/media?parent=164539"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}