{"id":394397,"date":"2024-11-19T21:32:13","date_gmt":"2024-11-19T21:32:13","guid":{"rendered":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/holed-surface-in-a-channel\/"},"modified":"2024-11-19T21:32:13","modified_gmt":"2024-11-19T21:32:13","slug":"holed-surface-in-a-channel","status":"publish","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/holed-surface-in-a-channel\/","title":{"rendered":"Holed surface in a channel"},"content":{"rendered":"<p>&lt;p&gt;Dear all&lt;\/p&gt;&lt;p&gt;I&#8217;m trying to analyze the flow of air due to a divergent and i want to see how the fluid behaves when hits an holed surface (as in the figure). I&#8217;m not really interested in the surface itself but of course i have to build a very small size mesh in the near fluid. When i try to start the mesh i have some problems. Is there any way to consider only the mesh in the fluid without generating it also in the surface body? Is there any trick to reduce the size only in that close zone?&lt;\/p&gt;&lt;p&gt;Thank you&lt;\/p&gt;&lt;p&gt;<img decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2024\/11\/19-11-2024-1732051674-mceclip0.png\" \/>&lt;\/p&gt;&lt;p&gt;<img decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2024\/11\/19-11-2024-1732051804-mceclip2.png\" \/>&lt;\/p&gt;<\/p>\n","protected":false},"template":"","class_list":["post-394397","topic","type-topic","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=\"Dear allI&#039;m trying to analyze the flow of air due to a divergent and i want to see how the fluid behaves when hits an holed surface (as in the figure). I&#039;m not really interested in the surface itself but of course i have to build a very small size mesh in the near fluid.\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<link rel=\"canonical\" href=\"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/holed-surface-in-a-channel\/\" \/>\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=\"Holed surface in a channel | Ansys Learning Forum\" \/>\n\t\t<meta property=\"og:description\" content=\"Dear allI&#039;m trying to analyze the flow of air due to a divergent and i want to see how the fluid behaves when hits an holed surface (as in the figure). I&#039;m not really interested in the surface itself but of course i have to build a very small size mesh in the near fluid.\" \/>\n\t\t<meta property=\"og:url\" content=\"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/holed-surface-in-a-channel\/\" \/>\n\t\t<meta property=\"article:published_time\" content=\"2024-11-19T21:32:13+00:00\" \/>\n\t\t<meta property=\"article:modified_time\" content=\"2024-11-19T21:32:13+00:00\" \/>\n\t\t<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n\t\t<meta name=\"twitter:title\" content=\"Holed surface in a channel | Ansys Learning Forum\" \/>\n\t\t<meta name=\"twitter:description\" content=\"Dear allI&#039;m trying to analyze the flow of air due to a divergent and i want to see how the fluid behaves when hits an holed surface (as in the figure). I&#039;m not really interested in the surface itself but of course i have to build a very small size mesh in the near fluid.\" \/>\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\\\/holed-surface-in-a-channel\\\/#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\\\/holed-surface-in-a-channel\\\/#listItem\",\"name\":\"Holed surface in a channel\"},\"previousItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum#listItem\",\"name\":\"Home\"}},{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/topic\\\/holed-surface-in-a-channel\\\/#listItem\",\"position\":3,\"name\":\"Holed surface in a channel\",\"previousItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/topics\\\/#listItem\",\"name\":\"Topics\"}}]},{\"@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\\\/holed-surface-in-a-channel\\\/#webpage\",\"url\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/topic\\\/holed-surface-in-a-channel\\\/\",\"name\":\"Holed surface in a channel | Ansys Learning Forum\",\"description\":\"Dear allI'm trying to analyze the flow of air due to a divergent and i want to see how the fluid behaves when hits an holed surface (as in the figure). 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