{"id":366533,"date":"2024-05-12T06:17:23","date_gmt":"2024-05-12T06:17:23","guid":{"rendered":"\/forum\/forums\/topic\/doubt-about-mesh-refinement\/"},"modified":"2024-05-12T06:18:46","modified_gmt":"2024-05-12T06:18:46","slug":"doubt-about-mesh-refinement","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/doubt-about-mesh-refinement\/","title":{"rendered":"Doubt about mesh refinement"},"content":{"rendered":"<p>Hi,<\/p>\n<p>&nbsp;<\/p>\n<p>so I am modeling a shell and tube heat exchanger , with near wall inflation of 2.4 mm first cell height and a global mesh with element size of 1.8 mm initially. So basically for 1.8 mm and 1.6 mm the residual error drops below 1e-3 easily. But when making the global mesh further refined to around 1.2,1.4 mm the residual finds it hard to drop below 1e-3. But the results converge in the monitor plots to decent values comparable to literature work. The mesh metrics are also good , anything I need to think about to get the residual tolerance better&nbsp;<\/p>\n","protected":false},"template":"","class_list":["post-366533","topic","type-topic","status-closed","hentry","topic-tag-fluent-ansys-1","topic-tag-heat_exchanger-1"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 4.9.10 - aioseo.com -->\n\t<meta name=\"description\" content=\"Hi, so I am modeling a shell and tube heat exchanger , with near wall inflation of 2.4 mm first cell height and a global mesh with element size of 1.8 mm initially. So basically for 1.8 mm and 1.6 mm the residual error drops below 1e-3 easily. But when making the global mesh further refined\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<link rel=\"canonical\" href=\"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/doubt-about-mesh-refinement\/\" \/>\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=\"Doubt about mesh refinement | Ansys Learning Forum\" \/>\n\t\t<meta property=\"og:description\" content=\"Hi, so I am modeling a shell and tube heat exchanger , with near wall inflation of 2.4 mm first cell height and a global mesh with element size of 1.8 mm initially. So basically for 1.8 mm and 1.6 mm the residual error drops below 1e-3 easily. 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But when making the global mesh further refined\" \/>\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\\\/doubt-about-mesh-refinement\\\/#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\\\/#fluent-#ansys-1\\\/#listItem\",\"name\":\"#fluent-#ansys\"},\"previousItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum#listItem\",\"name\":\"Home\"}},{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/topic-tag\\\/#fluent-#ansys-1\\\/#listItem\",\"position\":3,\"name\":\"#fluent-#ansys\",\"item\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/topic-tag\\\/#fluent-#ansys-1\\\/\",\"nextItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/topic\\\/doubt-about-mesh-refinement\\\/#listItem\",\"name\":\"Doubt about mesh refinement\"},\"previousItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/topics\\\/#listItem\",\"name\":\"Topics\"}},{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/topic\\\/doubt-about-mesh-refinement\\\/#listItem\",\"position\":4,\"name\":\"Doubt about mesh refinement\",\"previousItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/topic-tag\\\/#fluent-#ansys-1\\\/#listItem\",\"name\":\"#fluent-#ansys\"}}]},{\"@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\\\/doubt-about-mesh-refinement\\\/#webpage\",\"url\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/topic\\\/doubt-about-mesh-refinement\\\/\",\"name\":\"Doubt about mesh refinement | Ansys Learning Forum\",\"description\":\"Hi, so I am modeling a shell and tube heat exchanger , with near wall inflation of 2.4 mm first cell height and a global mesh with element size of 1.8 mm initially. 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