{"id":395199,"date":"2024-11-25T15:06:25","date_gmt":"2024-11-25T15:06:25","guid":{"rendered":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/395199\/"},"modified":"2024-11-25T15:06:25","modified_gmt":"2024-11-25T15:06:25","slug":"395199","status":"publish","type":"reply","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/395199\/","title":{"rendered":"Reply To: THERMAL CONDUCTIVITY OF TWO PHASE MATERIALS"},"content":{"rendered":"<p>&lt;p&gt;If you have enough cells and the heat load is the same on each cell then you can specify adiabatic boundary conditions on the top and bottom surface.&nbsp; The adiabatic condition is obtained by not specifying any constraint on surface.&nbsp; It&#8217;s less clear what the boundary condition on the vertical surfaces could be.&nbsp; The only alternative to adiabatic is flux normal which is obtained by coupling temperature on that surface and that doesn&#8217;t correct because that would make the temperature constant over the entire surface.&nbsp; If you had included a quarter of the cell to the right of the indicated domain you could apply periodic boundary conditions to the right and left surface.&nbsp; A periodic boundary condition forces the temperature to be the same at the left and right boundaries and is obtained by coupling temperature across the model.&nbsp; You describe the analysis as thermal conductivity, but frequently motion of the fluid is important and would require a CFD analysis.&lt;\/p&gt;<\/p>\n","protected":false},"template":"","class_list":["post-395199","reply","type-reply","status-publish","hentry"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 4.9.10 - aioseo.com -->\n\t<meta name=\"description\" content=\"If you have enough cells and the heat load is the same on each cell then you can specify adiabatic boundary conditions on the top and bottom surface. The adiabatic condition is obtained by not specifying any constraint on surface. It&#039;s less clear what the boundary condition on the vertical surfaces could be. The only\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<link rel=\"canonical\" href=\"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/395199\/\" \/>\n\t<meta name=\"generator\" content=\"All in One SEO (AIOSEO) 4.9.10\" \/>\n\t\t<meta property=\"og:locale\" content=\"en_US\" \/>\n\t\t<meta property=\"og:site_name\" content=\"Ansys Learning Forum | Ansys Innovation Space\" \/>\n\t\t<meta property=\"og:type\" content=\"article\" \/>\n\t\t<meta property=\"og:title\" content=\"Reply To: THERMAL CONDUCTIVITY OF TWO PHASE MATERIALS | Ansys Learning Forum\" \/>\n\t\t<meta property=\"og:description\" content=\"If you have enough cells and the heat load is the same on each cell then you can specify adiabatic boundary conditions on the top and bottom surface. The adiabatic condition is obtained by not specifying any constraint on surface. It&#039;s less clear what the boundary condition on the vertical surfaces could be. The only\" \/>\n\t\t<meta property=\"og:url\" content=\"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/395199\/\" \/>\n\t\t<meta property=\"article:published_time\" content=\"2024-11-25T15:06:25+00:00\" \/>\n\t\t<meta property=\"article:modified_time\" content=\"2024-11-25T15:06:25+00:00\" \/>\n\t\t<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n\t\t<meta name=\"twitter:title\" content=\"Reply To: THERMAL CONDUCTIVITY OF TWO PHASE MATERIALS | Ansys Learning Forum\" \/>\n\t\t<meta name=\"twitter:description\" content=\"If you have enough cells and the heat load is the same on each cell then you can specify adiabatic boundary conditions on the top and bottom surface. The adiabatic condition is obtained by not specifying any constraint on surface. 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The adiabatic condition is obtained by not specifying any constraint on surface. It's less clear what the boundary condition on the vertical surfaces could be. 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