{"id":382253,"date":"2024-09-11T04:49:01","date_gmt":"2024-09-11T04:49:01","guid":{"rendered":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/dpm-particle-momentum-transfer\/"},"modified":"2024-09-11T04:49:33","modified_gmt":"2024-09-11T04:49:33","slug":"dpm-particle-momentum-transfer","status":"publish","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/dpm-particle-momentum-transfer\/","title":{"rendered":"DPM particle momentum transfer"},"content":{"rendered":"<p>&lt;p&gt;&lt;p&gt;I am trying to model atomizing impinging streams for a rocket combustion case. The DPM streams are clearly impinging, and collision+breakup occurs, but the center two jets dont seem to be impacted very much. Is there a way I can get a better transfer of momentum between particles? I tried increasing the time step, but it got to the point where it became computationally too expensive for my model. Is this a case where I should use vof to dpm transition?&lt;\/p&gt;&lt;\/p&gt;&lt;p&gt;<img decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2024\/09\/11-09-2024-1726030170-mceclip1.png\" \/>&lt;\/p&gt;<\/p>\n","protected":false},"template":"","class_list":["post-382253","topic","type-topic","status-publish","hentry"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_author_ip":["73.97.177.52"],"_btv_view_count":["200"],"_bbp_topic_status":["unanswered"],"_edit_last":["343144"],"_bbp_revision_log":["a:1:{i:382254;a:2:{s:6:\"author\";i:343144;s:6:\"reason\";s:0:\"\";}}"],"_bbp_subscription":["199","343144"],"_bbp_topic_id":["382253"],"_bbp_forum_id":["27792"],"_bbp_engagement":["199","343144"],"_bbp_voice_count":["2"],"_bbp_reply_count":["7"],"_bbp_last_reply_id":["382768"],"_bbp_last_active_id":["382768"],"_bbp_last_active_time":["2024-09-16 13:31:10"],"_bbp_likes_count":["1"]},"test":"zwernjaydengmail-com"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/382253","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":1,"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/382253\/revisions"}],"predecessor-version":[{"id":382254,"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/382253\/revisions\/382254"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=382253"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}