{"id":196234,"date":"2021-11-01T11:50:50","date_gmt":"2021-11-01T11:50:50","guid":{"rendered":"\/forum\/forums\/reply\/196234\/"},"modified":"2021-11-01T11:50:50","modified_gmt":"2021-11-01T11:50:50","slug":"196234","status":"publish","type":"reply","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/196234\/","title":{"rendered":"Reply To: Different residuals by changing boundary conditions"},"content":{"rendered":"<p>OK. The best choice of boundary here depends on how the flow is when it reaches the surface. A suction velocity will assume a uniform value so may give convergence issues if the flow is very disturbed. You&#8217;ve also picked up an asymmetry in the flow, which is probably moving slightly with each iteration. It&#8217;s probably not far off what would happen in reality as perfectly symmetrical flows almost never exist. <br \/>\nCheck the flux balance and see how good that is. <\/p>\n","protected":false},"template":"","class_list":["post-196234","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. The best choice of boundary here depends on how the flow is when it reaches the surface. A suction velocity will assume a uniform value so may give convergence issues if the flow is very disturbed. You&#039;ve also picked up an asymmetry in the flow, which is probably moving slightly with each iteration. It&#039;s\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<link rel=\"canonical\" href=\"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/196234\/\" \/>\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: Different residuals by changing boundary conditions | Ansys Learning Forum\" \/>\n\t\t<meta property=\"og:description\" content=\"OK. The best choice of boundary here depends on how the flow is when it reaches the surface. A suction velocity will assume a uniform value so may give convergence issues if the flow is very disturbed. You&#039;ve also picked up an asymmetry in the flow, which is probably moving slightly with each iteration. It&#039;s\" \/>\n\t\t<meta property=\"og:url\" content=\"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/196234\/\" \/>\n\t\t<meta property=\"article:published_time\" content=\"2021-11-01T11:50:50+00:00\" \/>\n\t\t<meta property=\"article:modified_time\" content=\"2021-11-01T11:50:50+00:00\" \/>\n\t\t<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n\t\t<meta name=\"twitter:title\" content=\"Reply To: Different residuals by changing boundary conditions | Ansys Learning Forum\" \/>\n\t\t<meta name=\"twitter:description\" content=\"OK. The best choice of boundary here depends on how the flow is when it reaches the surface. A suction velocity will assume a uniform value so may give convergence issues if the flow is very disturbed. You&#039;ve also picked up an asymmetry in the flow, which is probably moving slightly with each iteration. It&#039;s\" \/>\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\\\/reply\\\/196234\\\/#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\\\/196234\\\/#listItem\",\"name\":\"Reply To: Different residuals by changing boundary conditions\"}},{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/reply\\\/196234\\\/#listItem\",\"position\":2,\"name\":\"Reply To: Different residuals by changing boundary conditions\",\"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\\\/196234\\\/#webpage\",\"url\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/reply\\\/196234\\\/\",\"name\":\"Reply To: Different residuals by changing boundary conditions | Ansys Learning Forum\",\"description\":\"OK. The best choice of boundary here depends on how the flow is when it reaches the surface. A suction velocity will assume a uniform value so may give convergence issues if the flow is very disturbed. You've also picked up an asymmetry in the flow, which is probably moving slightly with each iteration. 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A suction velocity will assume a uniform value so may give convergence issues if the flow is very disturbed. You've also picked up an asymmetry in the flow, which is probably moving slightly with each iteration. It's","canonical_url":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/196234\/","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"BreadcrumbList","@id":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/196234\/#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\/196234\/#listItem","name":"Reply To: Different residuals by changing boundary conditions"}},{"@type":"ListItem","@id":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/196234\/#listItem","position":2,"name":"Reply To: Different residuals by changing boundary conditions","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\/196234\/#webpage","url":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/196234\/","name":"Reply To: Different residuals by changing boundary conditions | Ansys Learning Forum","description":"OK. The best choice of boundary here depends on how the flow is when it reaches the surface. A suction velocity will assume a uniform value so may give convergence issues if the flow is very disturbed. You've also picked up an asymmetry in the flow, which is probably moving slightly with each iteration. It's","inLanguage":"en-US","isPartOf":{"@id":"https:\/\/innovationspace.ansys.com\/forum\/#website"},"breadcrumb":{"@id":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/196234\/#breadcrumblist"},"datePublished":"2021-11-01T11:50:50+00:00","dateModified":"2021-11-01T11:50:50+00:00"},{"@type":"WebSite","@id":"https:\/\/innovationspace.ansys.com\/forum\/#website","url":"https:\/\/innovationspace.ansys.com\/forum\/","name":"Ansys Learning Forum","description":"Ansys Innovation Space","inLanguage":"en-US","publisher":{"@id":"https:\/\/innovationspace.ansys.com\/forum\/#organization"}}]},"og:locale":"en_US","og:site_name":"Ansys Learning Forum | Ansys Innovation Space","og:type":"article","og:title":"Reply To: Different residuals by changing boundary conditions | Ansys Learning Forum","og:description":"OK. The best choice of boundary here depends on how the flow is when it reaches the surface. A suction velocity will assume a uniform value so may give convergence issues if the flow is very disturbed. You've also picked up an asymmetry in the flow, which is probably moving slightly with each iteration. It's","og:url":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/196234\/","article:published_time":"2021-11-01T11:50:50+00:00","article:modified_time":"2021-11-01T11:50:50+00:00","twitter:card":"summary_large_image","twitter:title":"Reply To: Different residuals by changing boundary conditions | Ansys Learning Forum","twitter:description":"OK. The best choice of boundary here depends on how the flow is when it reaches the surface. A suction velocity will assume a uniform value so may give convergence issues if the flow is very disturbed. You've also picked up an asymmetry in the flow, which is probably moving slightly with each iteration. 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