{"id":167020,"date":"2022-03-05T18:47:52","date_gmt":"2022-03-05T18:47:52","guid":{"rendered":"\/forum\/forums\/topic\/compressible-fluid-floating-point-exception-solution-diverging\/"},"modified":"2022-03-09T22:45:15","modified_gmt":"2022-03-09T22:45:15","slug":"compressible-fluid-floating-point-exception-solution-diverging","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/compressible-fluid-floating-point-exception-solution-diverging\/","title":{"rendered":"Compressible Fluid &#8211; Floating point exception &#8211; solution diverging"},"content":{"rendered":"<div class=\"Item-Body\">\n<div class=\"Message userContent\">\n<p>Hello, <\/p>\n<p>Im performing FSI simulation (Fluent+Mechanical+System Coupling) and I tried to use a compressible density model for Water &#8211; to check whether it helps with stabilizing solution. However, I am getting a diverged solution. This does not happen when I use a constant density. I am using the same settings as default. I also tried to use a Density Exponent equal 1.0 &#8211; with the same unsuccesfull result. <\/p>\n<p>My settings are in attached image. In Fluent I am using an operating pressure (Physics-&gt;operating conditions) equal 101325 Pa, and Referrence pressure (set in Refference values) equal 0 Pa.<\/p>\n<p>What I am doing wrong?<\/p>\n<div class=\"embedExternal embedImage\">\n<div class=\"embedExternal-content\">\n<a class=\"embedImage-link\" href=\"\/forum\/wp-content\/uploads\/forum-uploads\/306\/8WIAREYRY7C0.png\" rel=\"nofollow noopener\" target=\"_blank\"><br \/>\n<img decoding=\"async\" class=\"embedImage-img\" src=\"\/forum\/wp-content\/uploads\/forum-uploads\/306\/8WIAREYRY7C0.png\" alt=\"obraz_2022-03-05_194749.png\" \/><br \/>\n<\/a><\/p>\n","protected":false},"template":"","class_list":["post-167020","topic","type-topic","status-closed","hentry"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_btv_view_count":["477"],"_bbp_likes_count":["0"],"_bbp_topic_status":["unanswered"],"_bbp_status":["publish"],"_bbp_topic_id":["167020"],"_bbp_forum_id":["27792"],"_bbp_engagement":["25","199","161363"],"_bbp_voice_count":["3"],"_bbp_reply_count":["10"],"_bbp_last_reply_id":["207456"],"_bbp_last_active_id":["207456"],"_bbp_last_active_time":["2022-03-09 22:45:15"]},"test":"destroy"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/167020","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\/167020\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=167020"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}