{"id":369413,"date":"2024-05-31T13:46:32","date_gmt":"2024-05-31T13:46:32","guid":{"rendered":"\/forum\/forums\/reply\/369413\/"},"modified":"2024-05-31T13:46:32","modified_gmt":"2024-05-31T13:46:32","slug":"369413","status":"publish","type":"reply","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/369413\/","title":{"rendered":"Reply To: Transient Porous Media Combustion"},"content":{"rendered":"<p>&lt;p&gt;Hi there,&lt;br&gt;Got issue again here and really need your help&#8230; Issue: Before turn on Discrete Ordinate Radiation model, my solution can converge. (1e-6 continuity, second order-scheme.)&nbsp;&lt;br&gt;&lt;br&gt;<strong>Setup Before Turning On Discrete Ordinate:<\/strong>&lt;br&gt;Steady&lt;br&gt;Realizable k-epsilon&lt;br&gt;Species Transport&lt;br&gt;For natural convection to cool down the wall this setting is set: air density properties-incompressible gas law, gravity is turn on, operating density =1.225&#8230;&lt;br&gt;Boundary condition for coolant(air) inlet: pressure-inlet&nbsp;&lt;br&gt;Convergence criteria: Continuity = 1e-6&nbsp;&lt;br&gt;Second order scheme&lt;br&gt;Result:&lt;br&gt;<img decoding=\"async\" src=\"\/forum\/wp-content\/uploads\/sites\/2\/2024\/05\/31-05-2024-1717162979-mceclip1.png\" \/>&lt;br&gt;&lt;br&gt;Now, i try to turn on Discrete Ordinate and run with first order scheme it <strong>cannot converge<\/strong>. Any idea why this happen?&lt;br&gt;<img decoding=\"async\" src=\"\/forum\/wp-content\/uploads\/sites\/2\/2024\/05\/31-05-2024-1717162602-mceclip0.png\" \/>&lt;\/p&gt;<\/p>\n","protected":false},"template":"","class_list":["post-369413","reply","type-reply","status-publish","hentry"],"aioseo_notices":[],"acf":[],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/replies\/369413","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\/369413\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=369413"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}