{"id":357313,"date":"2024-03-15T15:33:11","date_gmt":"2024-03-15T15:33:11","guid":{"rendered":"\/forum\/forums\/reply\/357313\/"},"modified":"2024-03-15T15:33:11","modified_gmt":"2024-03-15T15:33:11","slug":"357313","status":"publish","type":"reply","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/357313\/","title":{"rendered":"Reply To: Particle count in a room"},"content":{"rendered":"<p>&lt;p&gt;What transients are there in the air flow? I ask as trying to model a whole room domain (air change rates in the order of 10&#8217;s of minutes) relative to the flow transient time scale (fractions of a second) can become excessively long. Running transient particles onto a steady airflow is much more efficient.&nbsp;&lt;\/p&gt;&lt;p&gt;Don&#8217;t use the DEM option, if you have enough particles in the system to need DEM you&#8217;ll struggle to breathe the air&#8230;.&nbsp; You may also want to clean up (remove) the various doors\/details unless you intend to mesh at that level of detail, and I don&#8217;t recommend that!&nbsp;&lt;\/p&gt;<\/p>\n","protected":false},"template":"","class_list":["post-357313","reply","type-reply","status-publish","hentry"],"aioseo_notices":[],"acf":[],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/replies\/357313","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/replies"}],"about":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/types\/reply"}],"version-history":[{"count":0,"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/replies\/357313\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=357313"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}