{"id":318745,"date":"2023-11-21T10:09:48","date_gmt":"2023-11-21T10:09:48","guid":{"rendered":"\/forum\/forums\/reply\/318745\/"},"modified":"2023-11-21T10:09:48","modified_gmt":"2023-11-21T10:09:48","slug":"318745","status":"publish","type":"reply","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/318745\/","title":{"rendered":"Reply To: Periodic boundary condition for droplet evaporation"},"content":{"rendered":"<p>&lt;p&gt;That&#8217;s not periodic. You&#8217;ll need to extend some boundaries if you&#8217;re flowing gas over the domain. Set the downstream &amp; &#8220;top&#8221; boundary as a pressure outlet.&nbsp;&lt;\/p&gt;&lt;p&gt;The issue now is ensuring you have the pressure gradient set correctly up the sides. Fluent uses a &#8220;density-operating density&#8221; function , so setting the operating density to be exactly the value of the gas phase on the boundary (ie inflow temperature &amp; pressure) reduces the density function to zero: it&#8217;s explained in the Operating Conditions section of the User&#8217;s Guide.&nbsp;&lt;\/p&gt;<\/p>\n","protected":false},"template":"","class_list":["post-318745","reply","type-reply","status-publish","hentry"],"aioseo_notices":[],"acf":[],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/replies\/318745","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\/318745\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=318745"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}