{"id":238803,"date":"2022-10-27T14:10:37","date_gmt":"2022-10-27T14:10:37","guid":{"rendered":"\/forum\/?post_type=topic&#038;p=238803"},"modified":"2022-10-27T14:10:37","modified_gmt":"2022-10-27T14:10:37","slug":"a-volume-fraction-of-particles-by-using-mpm-technique","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/a-volume-fraction-of-particles-by-using-mpm-technique\/","title":{"rendered":"A volume fraction of particles by using MPM technique"},"content":{"rendered":"<p>Hello everyone,<\/p>\n<p>I&#8217;ve been using a macroscopic particle model (MPM) to create a group of particles (1 cm. <span style=\"font-size: 18.6667px\">diameter<\/span><span style=\"font-size: 14pt\">) inside a cylinder.<\/span><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" title=\"Fig 1\" src=\"\/forum\/wp-content\/uploads\/sites\/2\/2022\/10\/27-10-2022-1666877217-Fig1.JPG\" alt=\"\" width=\"200\" height=\"210\"><\/p>\n<p>The whole fluid inside a chamber is only air.<\/p>\n<p>After I initialized a system, I checked a contour of a MPM-volume-fraction. Everything went well.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" title=\"Fig2\" src=\"\/forum\/wp-content\/uploads\/sites\/2\/2022\/10\/27-10-2022-1666877579-Fig2.JPG\" alt=\"\" width=\"509\" height=\"272\"><\/p>\n<p>Then, I checked a contour of&nbsp;<span style=\"font-size: 18.6667px\">air <\/span><span style=\"font-size: 14pt\">volume fraction. I found something strange. The air volume fraction was 1 but it should not be like this.<\/span><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" title=\"Fig3\" src=\"\/forum\/wp-content\/uploads\/sites\/2\/2022\/10\/27-10-2022-1666877937-Fig3.JPG\" alt=\"\" width=\"500\" height=\"281\"><\/p>\n<p><span style=\"font-size: 14pt\">I think the MPM volume fraction was already recognized by the software. My question is why the air volume fraction is full-on plane 3? <\/span><\/p>\n<p><span style=\"font-size: 14pt\">I mean should it be blank in the area that was occupied by particles?<\/p>\n<p>Your help is greatly appreciated.<\/span><\/p>\n","protected":false},"template":"","class_list":["post-238803","topic","type-topic","status-closed","hentry","topic-tag-mpm"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_author_ip":["23.56.168.190"],"_bbp_subscription":["248439","199","260828"],"_btv_view_count":["1612"],"_edit_lock":["1679568260:174089"],"_bbp_topic_status":["unanswered"],"_bbp_status":["publish"],"_bbp_topic_id":["238803"],"_bbp_forum_id":["27792"],"_bbp_engagement":["199","248439","260828"],"_bbp_voice_count":["3"],"_bbp_reply_count":["19"],"_bbp_last_reply_id":["240870"],"_bbp_last_active_id":["240870"],"_bbp_last_active_time":["2022-11-15 13:36:56"]},"test":"kasiditphagmail-com"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/238803","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\/238803\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=238803"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}