{"id":367828,"date":"2024-05-21T11:32:20","date_gmt":"2024-05-21T11:32:20","guid":{"rendered":"\/forum\/forums\/topic\/random-crash-with-dynamic-mesh-in-parallel-fluent\/"},"modified":"2024-05-21T11:32:20","modified_gmt":"2024-05-21T11:32:20","slug":"random-crash-with-dynamic-mesh-in-parallel-fluent","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/random-crash-with-dynamic-mesh-in-parallel-fluent\/","title":{"rendered":"Random crash with dynamic mesh in parallel fluent"},"content":{"rendered":"<p>License: Student 2024 R1<\/p>\n<p>Hello,<\/p>\n<p>I want to simulate the interaction between two opposing rotor blades. I use a UDF to move the blade surfaces in my domain. I use dynamic meshing to remesh at every time step. If I run the simulation on the four maximum allowed CPU cores, Fluent randomly closes without an error message. The only thing I could find in the log file is:<\/p>\n<p>Error [node 999999] [time 5\/10\/24 1:20:45] Abnormal Exit!<\/p>\n<p>The simulation runs fine when only using one CPU core.<\/p>\n<p>This is my UDF:<\/p>\n<p>#include &#8220;udf.h&#8221;<\/p>\n<p>static real omegaY=0.0;<\/p>\n<p>DEFINE_CG_MOTION(box,dt,vel,omega,time,dtime)<br \/>{<br \/>&nbsp; &nbsp; NV_S(vel, =, 0.0);<br \/>&nbsp; &nbsp; NV_S(omega, =, 0.0);<\/p>\n<p>&nbsp; &nbsp; omegaY= -2.6915;<br \/>&nbsp; &nbsp; omega[1]=omegaY;<br \/>}<\/p>\n<p>Does anyone have an idea on how to fix this? This significantly prolongs my calculation time.<\/p>\n","protected":false},"template":"","class_list":["post-367828","topic","type-topic","status-closed","hentry","topic-tag-dynamic-mesh","topic-tag-fluent","topic-tag-parallel-computing","topic-tag-transient","topic-tag-udf"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_subscription":["349341","29968"],"_bbp_author_ip":["184.24.96.207"]," _bbp_last_reply_id":["0"]," _bbp_likes_count":["0"],"_btv_view_count":["384"],"_bbp_topic_status":["unanswered"],"_bbp_topic_id":["367828"],"_bbp_forum_id":["27792"],"_bbp_engagement":["29968","349341"],"_bbp_voice_count":["2"],"_bbp_reply_count":["6"],"_bbp_last_reply_id":["369051"],"_bbp_last_active_id":["369051"],"_bbp_last_active_time":["2024-05-29 12:19:03"]},"test":"lutz-rohlfinghaw-hamburg-de"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/367828","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\/367828\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=367828"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}