{"id":395713,"date":"2024-11-29T08:02:00","date_gmt":"2024-11-29T08:02:00","guid":{"rendered":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/mhd-dpm-coupling\/"},"modified":"2024-11-29T08:02:00","modified_gmt":"2024-11-29T08:02:00","slug":"mhd-dpm-coupling","status":"publish","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/mhd-dpm-coupling\/","title":{"rendered":"MHD-DPM coupling"},"content":{"rendered":"<p>&lt;p&gt;Hi,&lt;\/p&gt;&lt;p&gt;I was trying to simulate the effect of a permanent magnet (a mangetic candle) on small solid ferromagentic paerticle in a water solution.&nbsp;&lt;\/p&gt;&lt;p&gt;In particular, particles are supposed to rotate around the magnet (this is how the device works).&nbsp;&lt;\/p&gt;&lt;p&gt;I have designed a simple magnetic candle in Ansys Maxwell. I have imported its B field inside fluent. You can see it on this figure:&lt;\/p&gt;&lt;p&gt;<img decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2024\/11\/29-11-2024-1732867031-mceclip0.png\" \/> (the white rectangle is where the magnete is supposed to be placed)&nbsp;&lt;\/p&gt;&lt;p&gt;&nbsp;&lt;\/p&gt;&lt;p&gt;Then I have activated the DPM and the MHD module.&lt;\/p&gt;&lt;p&gt;The simulation converges.&lt;\/p&gt;&lt;p&gt;However, the particles seems not to be affected by the magentic field. I tried changing their diameters, from 1e-6 to 1e-4 but nothing changes.&lt;\/p&gt;&lt;p&gt;Even though I amplify it in the MHD module by a factor of 10, it seems to have zero effects on the particles trajectories.&nbsp;&lt;\/p&gt;&lt;p&gt;What do you think? I am doing something wrong on the simulation or the magnet is too weak? The weired thing is that even with a 10 factor amplification, i obtain the same results.&nbsp;&lt;\/p&gt;<\/p>\n","protected":false},"template":"","class_list":["post-395713","topic","type-topic","status-publish","hentry","topic-tag-fluent-ansys-1","topic-tag-fluent-cfd-ansys-1","topic-tag-multiphase_models-1","topic-tag-ansys-fluent","topic-tag-dpm","topic-tag-mhd-1","topic-tag-mhd-model-2"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_forum_id":["27792"],"_bbp_topic_id":["395713"],"_bbp_subscription":["442606","199","5570"],"_bbp_author_ip":["103.43.233.162"],"_bbp_reply_count":["11"],"_bbp_reply_count_hidden":["0"],"_bbp_voice_count":["3"],"_bbp_engagement":["442606","199","5570"],"_btv_view_count":["428"],"_bbp_topic_status":["unanswered"],"_bbp_last_reply_id":["395790"],"_bbp_last_active_id":["395790"],"_bbp_last_active_time":["2024-11-29 15:32:44"]},"test":"ntrippellaicmaspa-it"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/395713","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\/395713\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=395713"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}