{"id":157121,"date":"2022-06-06T08:32:46","date_gmt":"2022-06-06T08:32:46","guid":{"rendered":"\/knowledge\/forums\/topic\/what-is-the-difference-between-a-porous-cell-zone-and-a-porous-jump-2\/"},"modified":"2022-06-06T08:32:46","modified_gmt":"2022-06-06T08:32:46","slug":"what-is-the-difference-between-a-porous-cell-zone-and-a-porous-jump-2","status":"publish","type":"topic","link":"https:\/\/innovationspace.ansys.com\/knowledge\/forums\/topic\/what-is-the-difference-between-a-porous-cell-zone-and-a-porous-jump-2\/","title":{"rendered":"What is the difference between a porous cell zone and a porous jump?"},"content":{"rendered":"<p>They are essentially the same thing, as the porous jump is a 1D simplification of the porous media model. For the porous zone, you can specify the viscous and inertial resistances as direction vectors. For the porous jump, the direction is taken as normal to the surface, so there&#8217;s just a single entry. The &#8216;viscous resistance&#8217; in the cell zone, which has units of 1\/m2, is the inverse of the &#8216;face permeability&#8217; input for the porous jump, which has units of m2. The &#8216;inertial resistance&#8217; in the cell zone is equivalent to the &#8216;pressure-jump coefficient (C2)&#8217; in the porous jump (both have units of 1\/m).<\/p>\n","protected":false},"template":"","class_list":["post-157121","topic","type-topic","status-publish","hentry","topic-tag-ansys-fluent","topic-tag-porous-zone"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 4.9.10 - aioseo.com -->\n\t<meta name=\"description\" content=\"They are essentially the same thing, as the porous jump is a 1D simplification of the porous media model. For the porous zone, you can specify the viscous and inertial resistances as direction vectors. For the porous jump, the direction is taken as normal to the surface, so there&#039;s just a single entry. The &#039;viscous\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<link rel=\"canonical\" href=\"https:\/\/innovationspace.ansys.com\/knowledge\/forums\/topic\/what-is-the-difference-between-a-porous-cell-zone-and-a-porous-jump-2\/\" \/>\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=\"What is the difference between a porous cell zone and a porous jump? | Ansys Knowledge\" \/>\n\t\t<meta property=\"og:description\" content=\"They are essentially the same thing, as the porous jump is a 1D simplification of the porous media model. For the porous zone, you can specify the viscous and inertial resistances as direction vectors. For the porous jump, the direction is taken as normal to the surface, so there&#039;s just a single entry. The &#039;viscous\" \/>\n\t\t<meta property=\"og:url\" content=\"https:\/\/innovationspace.ansys.com\/knowledge\/forums\/topic\/what-is-the-difference-between-a-porous-cell-zone-and-a-porous-jump-2\/\" \/>\n\t\t<meta property=\"article:published_time\" content=\"2022-06-06T08:32:46+00:00\" \/>\n\t\t<meta property=\"article:modified_time\" content=\"2022-06-06T08:32:46+00:00\" \/>\n\t\t<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n\t\t<meta name=\"twitter:title\" content=\"What is the difference between a porous cell zone and a porous jump? | Ansys Knowledge\" \/>\n\t\t<meta name=\"twitter:description\" content=\"They are essentially the same thing, as the porous jump is a 1D simplification of the porous media model. For the porous zone, you can specify the viscous and inertial resistances as direction vectors. For the porous jump, the direction is taken as normal to the surface, so there&#039;s just a single entry. The &#039;viscous\" \/>\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\\\/what-is-the-difference-between-a-porous-cell-zone-and-a-porous-jump-2\\\/#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\\\/ansys-fluent\\\/#listItem\",\"name\":\"ansys-fluent\"},\"previousItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/knowledge#listItem\",\"name\":\"Home\"}},{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/knowledge\\\/forums\\\/topic-tag\\\/ansys-fluent\\\/#listItem\",\"position\":3,\"name\":\"ansys-fluent\",\"item\":\"https:\\\/\\\/innovationspace.ansys.com\\\/knowledge\\\/forums\\\/topic-tag\\\/ansys-fluent\\\/\",\"nextItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/knowledge\\\/forums\\\/topic\\\/what-is-the-difference-between-a-porous-cell-zone-and-a-porous-jump-2\\\/#listItem\",\"name\":\"What is the difference between a porous cell zone and a porous jump?\"},\"previousItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/knowledge\\\/topics\\\/#listItem\",\"name\":\"Topics\"}},{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/knowledge\\\/forums\\\/topic\\\/what-is-the-difference-between-a-porous-cell-zone-and-a-porous-jump-2\\\/#listItem\",\"position\":4,\"name\":\"What is the difference between a porous cell zone and a porous jump?\",\"previousItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/knowledge\\\/forums\\\/topic-tag\\\/ansys-fluent\\\/#listItem\",\"name\":\"ansys-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\\\/what-is-the-difference-between-a-porous-cell-zone-and-a-porous-jump-2\\\/#webpage\",\"url\":\"https:\\\/\\\/innovationspace.ansys.com\\\/knowledge\\\/forums\\\/topic\\\/what-is-the-difference-between-a-porous-cell-zone-and-a-porous-jump-2\\\/\",\"name\":\"What is the difference between a porous cell zone and a porous jump? | Ansys Knowledge\",\"description\":\"They are essentially the same thing, as the porous jump is a 1D simplification of the porous media model. For the porous zone, you can specify the viscous and inertial resistances as direction vectors. For the porous jump, the direction is taken as normal to the surface, so there's just a single entry. The 'viscous\",\"inLanguage\":\"en-US\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/knowledge\\\/#website\"},\"breadcrumb\":{\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/knowledge\\\/forums\\\/topic\\\/what-is-the-difference-between-a-porous-cell-zone-and-a-porous-jump-2\\\/#breadcrumblist\"},\"datePublished\":\"2022-06-06T08:32:46+00:00\",\"dateModified\":\"2022-06-06T08:32:46+00:00\"},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/knowledge\\\/#website\",\"url\":\"https:\\\/\\\/innovationspace.ansys.com\\\/knowledge\\\/\",\"name\":\"Ansys Knowledge\",\"description\":\"Ansys Innovation Space\",\"inLanguage\":\"en-US\",\"publisher\":{\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/knowledge\\\/#organization\"}}]}\n\t\t<\/script>\n\t\t<!-- All in One SEO -->\n\n","aioseo_head_json":{"title":"What is the difference between a porous cell zone and a porous jump? | Ansys Knowledge","description":"They are essentially the same thing, as the porous jump is a 1D simplification of the porous media model. For the porous zone, you can specify the viscous and inertial resistances as direction vectors. For the porous jump, the direction is taken as normal to the surface, so there's just a single entry. The 'viscous","canonical_url":"https:\/\/innovationspace.ansys.com\/knowledge\/forums\/topic\/what-is-the-difference-between-a-porous-cell-zone-and-a-porous-jump-2\/","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"BreadcrumbList","@id":"https:\/\/innovationspace.ansys.com\/knowledge\/forums\/topic\/what-is-the-difference-between-a-porous-cell-zone-and-a-porous-jump-2\/#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\/ansys-fluent\/#listItem","name":"ansys-fluent"},"previousItem":{"@type":"ListItem","@id":"https:\/\/innovationspace.ansys.com\/knowledge#listItem","name":"Home"}},{"@type":"ListItem","@id":"https:\/\/innovationspace.ansys.com\/knowledge\/forums\/topic-tag\/ansys-fluent\/#listItem","position":3,"name":"ansys-fluent","item":"https:\/\/innovationspace.ansys.com\/knowledge\/forums\/topic-tag\/ansys-fluent\/","nextItem":{"@type":"ListItem","@id":"https:\/\/innovationspace.ansys.com\/knowledge\/forums\/topic\/what-is-the-difference-between-a-porous-cell-zone-and-a-porous-jump-2\/#listItem","name":"What is the difference between a porous cell zone and a porous jump?"},"previousItem":{"@type":"ListItem","@id":"https:\/\/innovationspace.ansys.com\/knowledge\/topics\/#listItem","name":"Topics"}},{"@type":"ListItem","@id":"https:\/\/innovationspace.ansys.com\/knowledge\/forums\/topic\/what-is-the-difference-between-a-porous-cell-zone-and-a-porous-jump-2\/#listItem","position":4,"name":"What is the difference between a porous cell zone and a porous jump?","previousItem":{"@type":"ListItem","@id":"https:\/\/innovationspace.ansys.com\/knowledge\/forums\/topic-tag\/ansys-fluent\/#listItem","name":"ansys-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\/what-is-the-difference-between-a-porous-cell-zone-and-a-porous-jump-2\/#webpage","url":"https:\/\/innovationspace.ansys.com\/knowledge\/forums\/topic\/what-is-the-difference-between-a-porous-cell-zone-and-a-porous-jump-2\/","name":"What is the difference between a porous cell zone and a porous jump? | Ansys Knowledge","description":"They are essentially the same thing, as the porous jump is a 1D simplification of the porous media model. For the porous zone, you can specify the viscous and inertial resistances as direction vectors. For the porous jump, the direction is taken as normal to the surface, so there's just a single entry. The 'viscous","inLanguage":"en-US","isPartOf":{"@id":"https:\/\/innovationspace.ansys.com\/knowledge\/#website"},"breadcrumb":{"@id":"https:\/\/innovationspace.ansys.com\/knowledge\/forums\/topic\/what-is-the-difference-between-a-porous-cell-zone-and-a-porous-jump-2\/#breadcrumblist"},"datePublished":"2022-06-06T08:32:46+00:00","dateModified":"2022-06-06T08:32:46+00:00"},{"@type":"WebSite","@id":"https:\/\/innovationspace.ansys.com\/knowledge\/#website","url":"https:\/\/innovationspace.ansys.com\/knowledge\/","name":"Ansys Knowledge","description":"Ansys Innovation Space","inLanguage":"en-US","publisher":{"@id":"https:\/\/innovationspace.ansys.com\/knowledge\/#organization"}}]},"og:locale":"en_US","og:site_name":"Ansys Knowledge | Ansys Innovation Space","og:type":"article","og:title":"What is the difference between a porous cell zone and a porous jump? | Ansys Knowledge","og:description":"They are essentially the same thing, as the porous jump is a 1D simplification of the porous media model. For the porous zone, you can specify the viscous and inertial resistances as direction vectors. For the porous jump, the direction is taken as normal to the surface, so there's just a single entry. The 'viscous","og:url":"https:\/\/innovationspace.ansys.com\/knowledge\/forums\/topic\/what-is-the-difference-between-a-porous-cell-zone-and-a-porous-jump-2\/","article:published_time":"2022-06-06T08:32:46+00:00","article:modified_time":"2022-06-06T08:32:46+00:00","twitter:card":"summary_large_image","twitter:title":"What is the difference between a porous cell zone and a porous jump? | Ansys Knowledge","twitter:description":"They are essentially the same thing, as the porous jump is a 1D simplification of the porous media model. For the porous zone, you can specify the viscous and inertial resistances as direction vectors. For the porous jump, the direction is taken as normal to the surface, so there's just a single entry. The 'viscous"},"aioseo_meta_data":{"post_id":"157121","title":null,"description":null,"keywords":null,"keyphrases":null,"primary_term":null,"canonical_url":null,"og_title":null,"og_description":null,"og_object_type":"default","og_image_type":"default","og_image_url":null,"og_image_width":null,"og_image_height":null,"og_image_custom_url":null,"og_image_custom_fields":null,"og_video":null,"og_custom_url":null,"og_article_section":null,"og_article_tags":null,"twitter_use_og":false,"twitter_card":"default","twitter_image_type":"default","twitter_image_url":null,"twitter_image_custom_url":null,"twitter_image_custom_fields":null,"twitter_title":null,"twitter_description":null,"schema":{"blockGraphs":[],"customGraphs":[],"default":{"data":{"Article":[],"Course":[],"Dataset":[],"FAQPage":[],"Movie":[],"Person":[],"Product":[],"ProductReview":[],"Car":[],"Recipe":[],"Service":[],"SoftwareApplication":[],"WebPage":[]},"graphName":"","isEnabled":true},"graphs":[]},"schema_type":"default","schema_type_options":null,"pillar_content":false,"robots_default":true,"robots_noindex":false,"robots_noarchive":false,"robots_nosnippet":false,"robots_nofollow":false,"robots_noimageindex":false,"robots_noodp":false,"robots_notranslate":false,"robots_max_snippet":null,"robots_max_videopreview":null,"robots_max_imagepreview":"large","priority":null,"frequency":null,"local_seo":null,"limit_modified_date":false,"created":"2025-10-17 17:31:29","updated":"2026-07-29 02:45:26","ai":null,"breadcrumb_settings":null,"seo_analyzer_scan_date":null},"aioseo_breadcrumb":"<div class=\"aioseo-breadcrumbs\"><span class=\"aioseo-breadcrumb\">\n\t\t\t<a href=\"https:\/\/innovationspace.ansys.com\/knowledge\" title=\"Home\">Home<\/a>\n\t\t<\/span><span class=\"aioseo-breadcrumb-separator\">&raquo;<\/span><span class=\"aioseo-breadcrumb\">\n\t\t\t<a href=\"https:\/\/innovationspace.ansys.com\/knowledge\/topics\/\" title=\"Topics\">Topics<\/a>\n\t\t<\/span><span class=\"aioseo-breadcrumb-separator\">&raquo;<\/span><span class=\"aioseo-breadcrumb\">\n\t\t\t<a href=\"https:\/\/innovationspace.ansys.com\/knowledge\/forums\/topic-tag\/ansys-fluent\/\" title=\"ansys-fluent\">ansys-fluent<\/a>\n\t\t<\/span><span class=\"aioseo-breadcrumb-separator\">&raquo;<\/span><span class=\"aioseo-breadcrumb\">\n\t\t\tWhat is the difference between a porous cell zone and a porous jump?\n\t\t<\/span><\/div>","aioseo_breadcrumb_json":[{"label":"Home","link":"https:\/\/innovationspace.ansys.com\/knowledge"},{"label":"Topics","link":"https:\/\/innovationspace.ansys.com\/knowledge\/topics\/"},{"label":"ansys-fluent","link":"https:\/\/innovationspace.ansys.com\/knowledge\/forums\/topic-tag\/ansys-fluent\/"},{"label":"What is the difference between a porous cell zone and a porous jump?","link":"https:\/\/innovationspace.ansys.com\/knowledge\/forums\/topic\/what-is-the-difference-between-a-porous-cell-zone-and-a-porous-jump-2\/"}],"acf":[],"custom_fields":[{"0":{"_wp_page_template":["default"],"_bbp_last_active_time":["06-06-2022 20:20"],"_bbp_forum_id":["27796"],"_btv_view_count":["2908"],"_bbp_likes_count":["0"]},"test":"articlesansys-com"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/knowledge\/wp-json\/wp\/v2\/topics\/157121","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/innovationspace.ansys.com\/knowledge\/wp-json\/wp\/v2\/topics"}],"about":[{"href":"https:\/\/innovationspace.ansys.com\/knowledge\/wp-json\/wp\/v2\/types\/topic"}],"version-history":[{"count":0,"href":"https:\/\/innovationspace.ansys.com\/knowledge\/wp-json\/wp\/v2\/topics\/157121\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/knowledge\/wp-json\/wp\/v2\/media?parent=157121"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}