{"id":383553,"date":"2024-09-23T08:33:45","date_gmt":"2024-09-23T08:33:45","guid":{"rendered":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/cfd-dem-coupling-to-simulate-liquid-droplet-deposition-into-the-powder-bed\/"},"modified":"2024-09-23T08:33:45","modified_gmt":"2024-09-23T08:33:45","slug":"cfd-dem-coupling-to-simulate-liquid-droplet-deposition-into-the-powder-bed","status":"publish","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/cfd-dem-coupling-to-simulate-liquid-droplet-deposition-into-the-powder-bed\/","title":{"rendered":"CFD-DEM coupling to simulate liquid droplet deposition into the powder bed"},"content":{"rendered":"<p>&lt;p&gt;Hello everyone, I am using CFD-DEM coupling method by Rocky and Fluent in 2023R2 to simulate the&nbsp;. Generally, there should be liquid spreading and penetration phenomena which can wet the particles. However, what I can observe from the numerical results is only the droplet impact which resulted in a hole in the center of the powder bed, but the droplet just kept spherical or elliptic.&lt;br&gt;&lt;br&gt;In ANSYS FLuent, I used Eulerian model for air, liquid and particle phases and set air as the primary phase. I set a cell region filled with the liquid which falls vertically with the velocity of 1m\/s. Here are some important parameters :&lt;br&gt;Droplet diameter: 72 &micro;m, liquid density: 1028kg\/m3, liquid viscosity: 0.0028 kg\/m*s, liquid surface tension: 0.015 N\/m&lt;br&gt;In ANSYS ROCKY I first generated the powder and used module to consider drag force and pressure gradient force. Here are some important parameters :&lt;br&gt;Particle size distribution:10-35 &micro;m, density of particles: 7890 kg\/m3.&lt;br&gt;&lt;br&gt;I have tried many adjustment of a lot of paramters but I can not reproduce the liquid wetting phenomenon.&lt;br&gt;Could anyone please give my some advice? In which direction should I try? Parameter adjustment ?Model selection? Or CFD-DEM coupling setup problem?&lt;\/p&gt;&lt;p&gt;Thank you in advance!&lt;\/p&gt;&lt;p&gt;<img decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2024\/09\/23-09-2024-1727080332-Bild1.png\" alt=\"\" \/>&lt;\/p&gt;<\/p>\n","protected":false},"template":"","class_list":["post-383553","topic","type-topic","status-publish","hentry","topic-tag-cfd-dem"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_subscription":["459032","199"],"_bbp_author_ip":["2a00:8a60:4602:110::20:4"],"_btv_view_count":["472"],"_bbp_topic_status":["unanswered"],"_bbp_topic_id":["383553"],"_bbp_forum_id":["27792"],"_bbp_engagement":["199","459032"],"_bbp_voice_count":["2"],"_bbp_reply_count":["7"],"_bbp_last_reply_id":["383777"],"_bbp_last_active_id":["383777"],"_bbp_last_active_time":["2024-09-23 15:28:40"]},"test":"z-sangiwm-rwth-aachen-de"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/383553","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\/383553\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=383553"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}