{"id":390112,"date":"2024-10-16T19:00:46","date_gmt":"2024-10-16T19:00:46","guid":{"rendered":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/390112\/"},"modified":"2024-10-16T19:00:46","modified_gmt":"2024-10-16T19:00:46","slug":"390112","status":"publish","type":"reply","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/390112\/","title":{"rendered":"Reply To: How to simulate consumption of tracer during combined internal\/external flow sim"},"content":{"rendered":"<p>&lt;p&gt;Hi Rob, thank you for your reply. Currently I am using an additional variable (as added and set up in CFX pre) as my &#8220;tracer&#8221;. I have assigned it a diffusivity coefficient of 1.2e-9 and selected the diffusive transport equation to be solved. I also set the following boundary conditions:&lt;\/p&gt;&lt;p&gt;Domain intialization: 0 kg\/m^3 for tracer value&lt;\/p&gt;&lt;p&gt;Velocity large inlet (on left of rectangular fluid domain): Velocity of 1 cm\/s and tracer value of 0.1 kg\/m^3&lt;\/p&gt;&lt;p&gt;Velocity large outlet: Set as 0 Pa opening with zero flux&lt;\/p&gt;&lt;p&gt;Mussel inlets: Velocity of 0.89 cm\/s and tracer value of 0.05 kg\/m^3&lt;\/p&gt;&lt;p&gt;Mussel outlets: Velocity of 1 cm\/s and tracer value of 0.025 kg\/m^3&lt;\/p&gt;&lt;p&gt;The mussel outlet and inlet are connected as the solid object has a fluid volume extracted from it and the outlet face area is 89% of the inlet face area hence the ratio of velocities (to maintain conservation of mass)&nbsp;&lt;\/p&gt;&lt;p&gt;Will this setup work or do I need to create a species and use that as my tracer as you suggested? I am not sure what expressions I should be creating for my mussel Inlet and outlet.&lt;\/p&gt;<\/p>\n","protected":false},"template":"","class_list":["post-390112","reply","type-reply","status-publish","hentry"],"aioseo_notices":[],"acf":[],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/replies\/390112","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\/390112\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=390112"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}