{"id":166801,"date":"2022-02-28T04:35:22","date_gmt":"2022-02-28T04:35:22","guid":{"rendered":"\/forum\/forums\/topic\/boundary-mach-number-exceeds-the-limit-at-mass-flow-inlet\/"},"modified":"2022-03-01T14:34:23","modified_gmt":"2022-03-01T14:34:23","slug":"boundary-mach-number-exceeds-the-limit-at-mass-flow-inlet","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/boundary-mach-number-exceeds-the-limit-at-mass-flow-inlet\/","title":{"rendered":"Boundary Mach Number exceeds the limit at mass flow inlet"},"content":{"rendered":"<div class=\"Item-Body\">\n<div class=\"Message userContent\">\n<p>Hi, I am running a turbo simulation with the periodic condition. My boundary conditions are pressure inlet (with the atmospheric condition) and mass flow outlet. When I simulate after a particular iteration, I get this error, &quot;Boundary Mach Number exceeds the limit 0.98 at mass flow inlet&quot;, and it ends up with a floating-point error. In most forums outside Ansys, the discussion says the flow might have choked but I don&#039;t think that could be the reason because the choke flow rate for the device is different. Could anyone help me with this issue?. What could be the reason for this issue?.<\/p>\n","protected":false},"template":"","class_list":["post-166801","topic","type-topic","status-closed","hentry","topic-tag-floating-point-exception","topic-tag-Fluentboundaryconditions-1","topic-tag-mass-flow-inlet-boundary-condition-1","topic-tag-turbomachinery"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_btv_view_count":["3673"],"_bbp_likes_count":["0"],"_bbp_subscription":["302"],"_bbp_topic_status":["unanswered"],"_bbp_status":["publish"],"_bbp_topic_id":["166801"],"_bbp_forum_id":["27792"],"_bbp_engagement":["25","181878"],"_bbp_voice_count":["2"],"_bbp_reply_count":["3"],"_bbp_last_reply_id":["206858"],"_bbp_last_active_id":["206858"],"_bbp_last_active_time":["2022-03-01 14:34:23"]},"test":"bharanitharan_j"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/166801","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\/166801\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=166801"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}