{"id":298986,"date":"2023-08-09T13:17:13","date_gmt":"2023-08-09T13:17:13","guid":{"rendered":"\/forum\/forums\/topic\/reinject-bc-with-ddpm\/"},"modified":"2023-08-09T13:17:13","modified_gmt":"2023-08-09T13:17:13","slug":"reinject-bc-with-ddpm","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/reinject-bc-with-ddpm\/","title":{"rendered":"Reinject BC with DDPM"},"content":{"rendered":"<p>Hi,<\/p>\n<p>I am trying to simulate a circulating fluidized bed with the DDPM model. I only model the riser, so I want to recirculate the particles that exit at the top back to the bottom of the domain. To achieve this I use a Volume injection to generate the initial particles and the Reinject boundary condition on the outlet. I have a &#8220;Reinjection Only&#8221; Surface-Injection on a plane on the Wall of the domain to reinsert the particle into the domain. This works fine when using the DPM model but when I activate DDPM and set the Discrete Phase Domain for the initial injection, it doesn&#8217;t work anymore. That is, the simulation runs fine, but particles that leave through the outlet just disappear, so they don&#8217;t appear back in the domain. In the console the &#8220;number tracked&#8221; decreases, but there are no messages like &#8220;escaped&#8221;. If I print a &#8220;DPM Summary&#8221; the particles are identified as &#8220;Reinject&#8221; as would be expected, the only problem being that they are not actually reinjected.<\/p>\n<p>Does the Reinject boundary work at all with DDPM, and if so what am I missing?<\/p>\n<p>Thanks for the help!<\/p>\n","protected":false},"template":"","class_list":["post-298986","topic","type-topic","status-closed","hentry"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_subscription":["7540","199"],"_bbp_author_ip":["96.7.218.223"]," _bbp_last_reply_id":["0"]," _bbp_likes_count":["0"],"_btv_view_count":["673"],"_bbp_topic_status":["unanswered"],"_bbp_status":["publish"],"_bbp_topic_id":["298986"],"_bbp_forum_id":["27792"],"_bbp_engagement":["199","7540"],"_bbp_voice_count":["2"],"_bbp_reply_count":["9"],"_bbp_last_reply_id":["303824"],"_bbp_last_active_id":["303824"],"_bbp_last_active_time":["2023-08-29 10:15:01"]},"test":"christoph-grafest-tu-darmstadt-de"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/298986","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\/298986\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=298986"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}