{"id":280963,"date":"2023-04-24T12:40:19","date_gmt":"2023-04-24T12:40:19","guid":{"rendered":"\/forum\/forums\/topic\/accelerate-convergence\/"},"modified":"2023-04-24T12:40:19","modified_gmt":"2023-04-24T12:40:19","slug":"accelerate-convergence","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/accelerate-convergence\/","title":{"rendered":"Accelerate convergence"},"content":{"rendered":"

Hi,<\/p>\n

 <\/p>\n

I have a problem with the convergence of my simulation. It takes about 15.000 Iterations for the mass- and heatbalance to add up.<\/p>\n

The case models airflow inside a room. The air enters through the velocity inlet with a temperature of 55 °C and 0.4 m\/s and leaves the room through the pressure outlet. One of the walls contains a heat sink so that mean air temperature in the room results in ~20°C. The mesh has 4.5 mio cells.<\/p>\n

\"\"<\/p>\n

I am using the pressure-based solver. For air properties that are temperatur dependent I use a polynoma (named expression).<\/p>\n

\"\"<\/p>\n

How can I accelerate the convergence?<\/p>\n

Every help is greatly appreciated. Cheers.<\/p>\n","protected":false},"template":"","class_list":["post-280963","topic","type-topic","status-closed","hentry"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_subscription":["77817","199842","199"],"_bbp_author_ip":["23.192.164.21"]," _bbp_last_reply_id":["0"]," _bbp_likes_count":["0"],"_btv_view_count":["2168"],"_bbp_topic_status":["unanswered"],"_bbp_status":["publish"],"_bbp_topic_id":["280963"],"_bbp_forum_id":["27792"],"_bbp_engagement":["199","77817","199842"],"_bbp_voice_count":["3"],"_bbp_reply_count":["11"],"_bbp_last_reply_id":["281129"],"_bbp_last_active_id":["281129"],"_bbp_last_active_time":["2023-04-25 15:11:34"]},"test":"benjamin-walzigte-uni-stuttgart-de"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/280963","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\/280963\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=280963"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}