{"id":289752,"date":"2023-06-21T12:52:14","date_gmt":"2023-06-21T12:52:14","guid":{"rendered":"\/forum\/forums\/reply\/289752\/"},"modified":"2023-06-21T12:52:14","modified_gmt":"2023-06-21T12:52:14","slug":"289752","status":"publish","type":"reply","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/289752\/","title":{"rendered":"Reply To: Direction vector is worng"},"content":{"rendered":"<p>&lt;p&gt;OK, boundaries are covered in the tutorials (click on Help in Fluent) and on the Learning section here (CFD\/Fluids courses). That should cover the basics.&nbsp;&lt;\/p&gt;&lt;p&gt;In your case I assume your ducts have fans in them? Ie air is drawn into the duct and blown out of the other end. Do you need to model inside the duct? Or can you just set an inflow &amp; outflow for the duct and ignore the middle bit? You images look a bit like tunnels, but at 0.5m across it&#8217;s a lot smaller than I&#8217;ve modelled with ducts\/jet fans present.&nbsp;&lt;\/p&gt;<\/p>\n","protected":false},"template":"","class_list":["post-289752","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=\"OK, boundaries are covered in the tutorials (click on Help in Fluent) and on the Learning section here (CFD\/Fluids courses). That should cover the basics. In your case I assume your ducts have fans in them? Ie air is drawn into the duct and blown out of the other end. Do you need to model inside\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<link rel=\"canonical\" href=\"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/289752\/\" \/>\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: Direction vector is worng | Ansys Learning Forum\" \/>\n\t\t<meta property=\"og:description\" content=\"OK, boundaries are covered in the tutorials (click on Help in Fluent) and on the Learning section here (CFD\/Fluids courses). That should cover the basics. In your case I assume your ducts have fans in them? Ie air is drawn into the duct and blown out of the other end. 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