{"id":391164,"date":"2024-10-24T07:18:14","date_gmt":"2024-10-24T07:18:14","guid":{"rendered":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/391164\/"},"modified":"2024-10-24T07:20:45","modified_gmt":"2024-10-24T07:20:45","slug":"391164","status":"publish","type":"reply","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/391164\/","title":{"rendered":"Reply To: Cyclone (Stairmand) simulation using RSM"},"content":{"rendered":"<p>&lt;p&gt;&nbsp;&lt;\/p&gt;&lt;p&gt;I think that now I start to understand what is going wrong with the axial velocity profiles:&nbsp;&lt;\/p&gt;&lt;p&gt;<img decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2024\/10\/24-10-2024-1729754143-mceclip0.png\" \/>&lt;\/p&gt;&lt;p&gt;As you can see, the axial velocity is predicted too low, even negative, at the center for both SSTCC and RSM. I think this is a direct result of the backflow from the pressure-outlet at the top, that is now &lsquo;pushing fluid&rsquo; into the boundary exactly in the same direction of the shift in axial velocity at the center. Currently, I&rsquo;m using standard backflow settings, so direction normal to boundary and uniform total pressure, which is not really correct. I&rsquo;m still thinking on how to improve the settings of the backflow, but I&rsquo;m convinced this is contributing to the differences between CFD and experimental data.&nbsp;&lt;\/p&gt;&lt;p&gt;&nbsp;&lt;\/p&gt;<\/p>\n","protected":false},"template":"","class_list":["post-391164","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=\"I think that now I start to understand what is going wrong with the axial velocity profiles: As you can see, the axial velocity is predicted too low, even negative, at the center for both SSTCC and RSM. I think this is a direct result of the backflow from the pressure-outlet at the top, that is\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<link rel=\"canonical\" href=\"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/391164\/\" \/>\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: Cyclone (Stairmand) simulation using RSM | Ansys Learning Forum\" \/>\n\t\t<meta property=\"og:description\" content=\"I think that now I start to understand what is going wrong with the axial velocity profiles: As you can see, the axial velocity is predicted too low, even negative, at the center for both SSTCC and RSM. I think this is a direct result of the backflow from the pressure-outlet at the top, that is\" \/>\n\t\t<meta property=\"og:url\" content=\"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/391164\/\" \/>\n\t\t<meta property=\"og:image\" content=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2024\/10\/24-10-2024-1729754143-mceclip0.png\" \/>\n\t\t<meta property=\"og:image:secure_url\" content=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2024\/10\/24-10-2024-1729754143-mceclip0.png\" \/>\n\t\t<meta property=\"article:published_time\" content=\"2024-10-24T07:18:14+00:00\" \/>\n\t\t<meta property=\"article:modified_time\" content=\"2024-10-24T07:20:45+00:00\" \/>\n\t\t<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n\t\t<meta name=\"twitter:title\" content=\"Reply To: Cyclone (Stairmand) simulation using RSM | Ansys Learning Forum\" \/>\n\t\t<meta name=\"twitter:description\" content=\"I think that now I start to understand what is going wrong with the axial velocity profiles: As you can see, the axial velocity is predicted too low, even negative, at the center for both SSTCC and RSM. 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I think this is a direct result of the backflow from the pressure-outlet at the top, that is","canonical_url":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/391164\/","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"BreadcrumbList","@id":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/391164\/#breadcrumblist","itemListElement":[{"@type":"ListItem","@id":"https:\/\/innovationspace.ansys.com\/forum#listItem","position":1,"name":"Home","item":"https:\/\/innovationspace.ansys.com\/forum","nextItem":{"@type":"ListItem","@id":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/391164\/#listItem","name":"Reply To: Cyclone (Stairmand) simulation using RSM"}},{"@type":"ListItem","@id":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/391164\/#listItem","position":2,"name":"Reply To: Cyclone (Stairmand) simulation using RSM","previousItem":{"@type":"ListItem","@id":"https:\/\/innovationspace.ansys.com\/forum#listItem","name":"Home"}}]},{"@type":"Organization","@id":"https:\/\/innovationspace.ansys.com\/forum\/#organization","name":"Ansys Learning Forum","description":"Ansys Innovation Space","url":"https:\/\/innovationspace.ansys.com\/forum\/"},{"@type":"WebPage","@id":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/391164\/#webpage","url":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/391164\/","name":"Reply To: Cyclone (Stairmand) simulation using RSM | Ansys Learning Forum","description":"I think that now I start to understand what is going wrong with the axial velocity profiles: As you can see, the axial velocity is predicted too low, even negative, at the center for both SSTCC and RSM. 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