{"id":166042,"date":"2023-03-17T13:10:55","date_gmt":"2023-03-17T13:10:55","guid":{"rendered":"\/knowledge\/forums\/topic\/influence-of-polyhedral-mesh-on-gradient-calculation\/"},"modified":"2023-07-31T12:27:12","modified_gmt":"2023-07-31T12:27:12","slug":"influence-of-polyhedral-mesh-on-gradient-calculation","status":"publish","type":"topic","link":"https:\/\/innovationspace.ansys.com\/knowledge\/forums\/topic\/influence-of-polyhedral-mesh-on-gradient-calculation\/","title":{"rendered":"Influence of polyhedral mesh on gradient calculation."},"content":{"rendered":"<p>ANSYS Fluent has the capability to convert globally or locally the cells of a pre-existing grid into polyhedral cells.   The generation of polyhedral grids is now natively possible in ANSYS Fluent Meshing and is a valuable solution compared to a posteriori conversion.   Polyhedral are known to show some numerical properties due to lower cell count compared to tetraedral grid: &#8211; Less memory required &#8211; Faster time to obtain solution  Nevertheless, what is the impact of polyhedra on the calculation of gradients?  See attached document for further elements on this topic.<\/p>\n<p>Attachments:<br \/>\n1. <a href=https:\/\/ansys13.ansys.com\/KnowledgeArticles\/Phase-1\/2043021\/2043021_PolyMeshGradientCalculation.pdf>2043021_PolyMeshGradientCalculation.pdf<\/a><\/p>\n","protected":false},"template":"","class_list":["post-166042","topic","type-topic","status-publish","hentry","topic-tag-17-2","topic-tag-fluent","topic-tag-fluid-dynamics","topic-tag-general-fluent","topic-tag-pre-processing-meshing"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 4.9.10 - aioseo.com -->\n\t<meta name=\"description\" content=\"ANSYS Fluent has the capability to convert globally or locally the cells of a pre-existing grid into polyhedral cells. The generation of polyhedral grids is now natively possible in ANSYS Fluent Meshing and is a valuable solution compared to a posteriori conversion. Polyhedral are known to show some numerical properties due to lower cell count\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<link rel=\"canonical\" href=\"https:\/\/innovationspace.ansys.com\/knowledge\/forums\/topic\/influence-of-polyhedral-mesh-on-gradient-calculation\/\" \/>\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 Knowledge | Ansys Innovation Space\" \/>\n\t\t<meta property=\"og:type\" content=\"article\" \/>\n\t\t<meta property=\"og:title\" content=\"Influence of polyhedral mesh on gradient calculation. | Ansys Knowledge\" \/>\n\t\t<meta property=\"og:description\" content=\"ANSYS Fluent has the capability to convert globally or locally the cells of a pre-existing grid into polyhedral cells. The generation of polyhedral grids is now natively possible in ANSYS Fluent Meshing and is a valuable solution compared to a posteriori conversion. Polyhedral are known to show some numerical properties due to lower cell count\" \/>\n\t\t<meta property=\"og:url\" content=\"https:\/\/innovationspace.ansys.com\/knowledge\/forums\/topic\/influence-of-polyhedral-mesh-on-gradient-calculation\/\" \/>\n\t\t<meta property=\"article:published_time\" content=\"2023-03-17T13:10:55+00:00\" \/>\n\t\t<meta property=\"article:modified_time\" content=\"2023-07-31T12:27:12+00:00\" \/>\n\t\t<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n\t\t<meta name=\"twitter:title\" content=\"Influence of polyhedral mesh on gradient calculation. | Ansys Knowledge\" \/>\n\t\t<meta name=\"twitter:description\" content=\"ANSYS Fluent has the capability to convert globally or locally the cells of a pre-existing grid into polyhedral cells. The generation of polyhedral grids is now natively possible in ANSYS Fluent Meshing and is a valuable solution compared to a posteriori conversion. Polyhedral are known to show some numerical properties due to lower cell count\" \/>\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\\\/knowledge\\\/forums\\\/topic\\\/influence-of-polyhedral-mesh-on-gradient-calculation\\\/#breadcrumblist\",\"itemListElement\":[{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/knowledge#listItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/innovationspace.ansys.com\\\/knowledge\",\"nextItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/knowledge\\\/topics\\\/#listItem\",\"name\":\"Topics\"}},{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/knowledge\\\/topics\\\/#listItem\",\"position\":2,\"name\":\"Topics\",\"item\":\"https:\\\/\\\/innovationspace.ansys.com\\\/knowledge\\\/topics\\\/\",\"nextItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/knowledge\\\/forums\\\/topic-tag\\\/fluent\\\/#listItem\",\"name\":\"fluent\"},\"previousItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/knowledge#listItem\",\"name\":\"Home\"}},{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/knowledge\\\/forums\\\/topic-tag\\\/fluent\\\/#listItem\",\"position\":3,\"name\":\"fluent\",\"item\":\"https:\\\/\\\/innovationspace.ansys.com\\\/knowledge\\\/forums\\\/topic-tag\\\/fluent\\\/\",\"nextItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/knowledge\\\/forums\\\/topic\\\/influence-of-polyhedral-mesh-on-gradient-calculation\\\/#listItem\",\"name\":\"Influence of polyhedral mesh on gradient calculation.\"},\"previousItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/knowledge\\\/topics\\\/#listItem\",\"name\":\"Topics\"}},{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/knowledge\\\/forums\\\/topic\\\/influence-of-polyhedral-mesh-on-gradient-calculation\\\/#listItem\",\"position\":4,\"name\":\"Influence of polyhedral mesh on gradient calculation.\",\"previousItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/knowledge\\\/forums\\\/topic-tag\\\/fluent\\\/#listItem\",\"name\":\"fluent\"}}]},{\"@type\":\"Organization\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/knowledge\\\/#organization\",\"name\":\"Ansys Knowledge\",\"description\":\"Ansys Innovation Space\",\"url\":\"https:\\\/\\\/innovationspace.ansys.com\\\/knowledge\\\/\"},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/knowledge\\\/forums\\\/topic\\\/influence-of-polyhedral-mesh-on-gradient-calculation\\\/#webpage\",\"url\":\"https:\\\/\\\/innovationspace.ansys.com\\\/knowledge\\\/forums\\\/topic\\\/influence-of-polyhedral-mesh-on-gradient-calculation\\\/\",\"name\":\"Influence of polyhedral mesh on gradient calculation. | Ansys Knowledge\",\"description\":\"ANSYS Fluent has the capability to convert globally or locally the cells of a pre-existing grid into polyhedral cells. 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