{"id":235615,"date":"2022-09-19T02:02:57","date_gmt":"2022-09-19T02:02:57","guid":{"rendered":"\/forum\/forums\/topic\/non-zero-boundary-condition-on-the-wall\/"},"modified":"2022-09-19T02:11:57","modified_gmt":"2022-09-19T02:11:57","slug":"non-zero-boundary-condition-on-the-wall","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/non-zero-boundary-condition-on-the-wall\/","title":{"rendered":"non-zero boundary condition on the wall"},"content":{"rendered":"<div>Hello everyone,<\/div>\n<div>&nbsp;<\/div>\n<div>I have a problem with flow between fixed parallel plates. On the top plate I have a no-slip condition. But on the bottom plate, I have a boundary condition where the velocity is non-zero. How can I add the boundary condition on the bottom plate? Would it be through a UDF? Looking through Fluent, I couldn&#8217;t see an option in the wall tab.<\/div>\n<div><img decoding=\"async\" src=\"\/forum\/wp-content\/uploads\/sites\/2\/2022\/09\/19-09-2022-1663553510-fluent2.png\" alt=\"\"><\/div>\n","protected":false},"template":"","class_list":["post-235615","topic","type-topic","status-closed","hentry","topic-tag-fluent-ansys-1","topic-tag-boundary-condition","topic-tag-wall"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 4.9.10 - aioseo.com -->\n\t<meta name=\"description\" content=\"Hello everyone, I have a problem with flow between fixed parallel plates. On the top plate I have a no-slip condition. But on the bottom plate, I have a boundary condition where the velocity is non-zero. How can I add the boundary condition on the bottom plate? Would it be through a UDF? Looking through Fluent,\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<link rel=\"canonical\" href=\"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/non-zero-boundary-condition-on-the-wall\/\" \/>\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=\"non-zero boundary condition on the wall | Ansys Learning Forum\" \/>\n\t\t<meta property=\"og:description\" content=\"Hello everyone, I have a problem with flow between fixed parallel plates. On the top plate I have a no-slip condition. But on the bottom plate, I have a boundary condition where the velocity is non-zero. How can I add the boundary condition on the bottom plate? Would it be through a UDF? Looking through Fluent,\" \/>\n\t\t<meta property=\"og:url\" content=\"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/non-zero-boundary-condition-on-the-wall\/\" \/>\n\t\t<meta property=\"og:image\" content=\"https:\/\/innovationspace.ansys.com\/forum\/forum\/wp-content\/uploads\/sites\/2\/2022\/09\/19-09-2022-1663553510-fluent2.png\" \/>\n\t\t<meta property=\"og:image:secure_url\" content=\"https:\/\/innovationspace.ansys.com\/forum\/forum\/wp-content\/uploads\/sites\/2\/2022\/09\/19-09-2022-1663553510-fluent2.png\" \/>\n\t\t<meta property=\"article:published_time\" content=\"2022-09-19T02:02:57+00:00\" \/>\n\t\t<meta property=\"article:modified_time\" content=\"2022-09-19T02:11:57+00:00\" \/>\n\t\t<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n\t\t<meta name=\"twitter:title\" content=\"non-zero boundary condition on the wall | Ansys Learning Forum\" \/>\n\t\t<meta name=\"twitter:description\" content=\"Hello everyone, I have a problem with flow between fixed parallel plates. On the top plate I have a no-slip condition. But on the bottom plate, I have a boundary condition where the velocity is non-zero. How can I add the boundary condition on the bottom plate? Would it be through a UDF? Looking through Fluent,\" \/>\n\t\t<meta name=\"twitter:image\" content=\"https:\/\/innovationspace.ansys.com\/forum\/forum\/wp-content\/uploads\/sites\/2\/2022\/09\/19-09-2022-1663553510-fluent2.png\" \/>\n\t\t<script type=\"application\/ld+json\" class=\"aioseo-schema\">\n\t\t\t{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/topic\\\/non-zero-boundary-condition-on-the-wall\\\/#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\\\/topics\\\/#listItem\",\"name\":\"Topics\"}},{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/topics\\\/#listItem\",\"position\":2,\"name\":\"Topics\",\"item\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/topics\\\/\",\"nextItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/topic-tag\\\/boundary-condition\\\/#listItem\",\"name\":\"boundary-condition\"},\"previousItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum#listItem\",\"name\":\"Home\"}},{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/topic-tag\\\/boundary-condition\\\/#listItem\",\"position\":3,\"name\":\"boundary-condition\",\"item\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/topic-tag\\\/boundary-condition\\\/\",\"nextItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/topic\\\/non-zero-boundary-condition-on-the-wall\\\/#listItem\",\"name\":\"non-zero boundary condition on the wall\"},\"previousItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/topics\\\/#listItem\",\"name\":\"Topics\"}},{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/topic\\\/non-zero-boundary-condition-on-the-wall\\\/#listItem\",\"position\":4,\"name\":\"non-zero boundary condition on the wall\",\"previousItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/topic-tag\\\/boundary-condition\\\/#listItem\",\"name\":\"boundary-condition\"}}]},{\"@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\\\/topic\\\/non-zero-boundary-condition-on-the-wall\\\/#webpage\",\"url\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/topic\\\/non-zero-boundary-condition-on-the-wall\\\/\",\"name\":\"non-zero boundary condition on the wall | Ansys Learning Forum\",\"description\":\"Hello everyone, I have a problem with flow between fixed parallel plates. On the top plate I have a no-slip condition. But on the bottom plate, I have a boundary condition where the velocity is non-zero. How can I add the boundary condition on the bottom plate? Would it be through a UDF? 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On the top plate I have a no-slip condition. But on the bottom plate, I have a boundary condition where the velocity is non-zero. How can I add the boundary condition on the bottom plate? Would it be through a UDF? Looking through Fluent,","canonical_url":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/non-zero-boundary-condition-on-the-wall\/","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"BreadcrumbList","@id":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/non-zero-boundary-condition-on-the-wall\/#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\/topics\/#listItem","name":"Topics"}},{"@type":"ListItem","@id":"https:\/\/innovationspace.ansys.com\/forum\/topics\/#listItem","position":2,"name":"Topics","item":"https:\/\/innovationspace.ansys.com\/forum\/topics\/","nextItem":{"@type":"ListItem","@id":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic-tag\/boundary-condition\/#listItem","name":"boundary-condition"},"previousItem":{"@type":"ListItem","@id":"https:\/\/innovationspace.ansys.com\/forum#listItem","name":"Home"}},{"@type":"ListItem","@id":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic-tag\/boundary-condition\/#listItem","position":3,"name":"boundary-condition","item":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic-tag\/boundary-condition\/","nextItem":{"@type":"ListItem","@id":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/non-zero-boundary-condition-on-the-wall\/#listItem","name":"non-zero boundary condition on the wall"},"previousItem":{"@type":"ListItem","@id":"https:\/\/innovationspace.ansys.com\/forum\/topics\/#listItem","name":"Topics"}},{"@type":"ListItem","@id":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/non-zero-boundary-condition-on-the-wall\/#listItem","position":4,"name":"non-zero boundary condition on the wall","previousItem":{"@type":"ListItem","@id":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic-tag\/boundary-condition\/#listItem","name":"boundary-condition"}}]},{"@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\/topic\/non-zero-boundary-condition-on-the-wall\/#webpage","url":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/non-zero-boundary-condition-on-the-wall\/","name":"non-zero boundary condition on the wall | Ansys Learning Forum","description":"Hello everyone, I have a problem with flow between fixed parallel plates. On the top plate I have a no-slip condition. But on the bottom plate, I have a boundary condition where the velocity is non-zero. How can I add the boundary condition on the bottom plate? Would it be through a UDF? 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