{"id":372099,"date":"2024-07-16T12:34:11","date_gmt":"2024-07-16T12:34:11","guid":{"rendered":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/fluent-not-starting-first-iteration\/"},"modified":"2024-07-16T12:34:11","modified_gmt":"2024-07-16T12:34:11","slug":"fluent-not-starting-first-iteration","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/fluent-not-starting-first-iteration\/","title":{"rendered":"Fluent not starting first iteration"},"content":{"rendered":"<p>Greetings,<\/p>\n<p>I am trying to run a 29M polyhedral cell mesh using the pressure-based Coupled solver with k-omega SST. Previously, it would initialize using fmg, but now it stalls on the first step, so I am using hybrid initialization. I am trying to get the first real iteration to solve.<\/p>\n<p>Computer specs: Intel(R) Xeon(R) Gold 6254 CPU @ 3.10GHz, 3100 Mhz, 18 Cores and 384 GB RAM. We are able to use 4 out of the 36 cores with the current license.<\/p>\n<p>After looking at the initialized solution contours, the distributions look normal, so I am assuming the setup is correct.<\/p>\n<p>So far, I have tried moving from workbench to standalone, switching coupled to SIMPLE, and changing fluid properties to constants.<\/p>\n<p>When solving, the computer uses ~8% CPU and 144 GB RAM. I was expecting the CPU usage to be higher, but I am not sure.<\/p>\n","protected":false},"template":"","class_list":["post-372099","topic","type-topic","status-closed","hentry"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 4.9.10 - aioseo.com -->\n\t<meta name=\"description\" content=\"Greetings,I am trying to run a 29M polyhedral cell mesh using the pressure-based Coupled solver with k-omega SST. Previously, it would initialize using fmg, but now it stalls on the first step, so I am using hybrid initialization. I am trying to get the first real iteration to solve.Computer specs: Intel(R) Xeon(R) Gold 6254 CPU\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<link rel=\"canonical\" href=\"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/fluent-not-starting-first-iteration\/\" \/>\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=\"Fluent not starting first iteration | Ansys Learning Forum\" \/>\n\t\t<meta property=\"og:description\" content=\"Greetings,I am trying to run a 29M polyhedral cell mesh using the pressure-based Coupled solver with k-omega SST. Previously, it would initialize using fmg, but now it stalls on the first step, so I am using hybrid initialization. I am trying to get the first real iteration to solve.Computer specs: Intel(R) Xeon(R) Gold 6254 CPU\" \/>\n\t\t<meta property=\"og:url\" content=\"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/fluent-not-starting-first-iteration\/\" \/>\n\t\t<meta property=\"article:published_time\" content=\"2024-07-16T12:34:11+00:00\" \/>\n\t\t<meta property=\"article:modified_time\" content=\"2024-07-16T12:34:11+00:00\" \/>\n\t\t<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n\t\t<meta name=\"twitter:title\" content=\"Fluent not starting first iteration | Ansys Learning Forum\" \/>\n\t\t<meta name=\"twitter:description\" content=\"Greetings,I am trying to run a 29M polyhedral cell mesh using the pressure-based Coupled solver with k-omega SST. Previously, it would initialize using fmg, but now it stalls on the first step, so I am using hybrid initialization. I am trying to get the first real iteration to solve.Computer specs: Intel(R) Xeon(R) Gold 6254 CPU\" \/>\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\\\/fluent-not-starting-first-iteration\\\/#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\\\/fluent-not-starting-first-iteration\\\/#listItem\",\"name\":\"Fluent not starting first iteration\"},\"previousItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum#listItem\",\"name\":\"Home\"}},{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/topic\\\/fluent-not-starting-first-iteration\\\/#listItem\",\"position\":3,\"name\":\"Fluent not starting first iteration\",\"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\\\/fluent-not-starting-first-iteration\\\/#webpage\",\"url\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/topic\\\/fluent-not-starting-first-iteration\\\/\",\"name\":\"Fluent not starting first iteration | Ansys Learning Forum\",\"description\":\"Greetings,I am trying to run a 29M polyhedral cell mesh using the pressure-based Coupled solver with k-omega SST. Previously, it would initialize using fmg, but now it stalls on the first step, so I am using hybrid initialization. I am trying to get the first real iteration to solve.Computer specs: Intel(R) Xeon(R) Gold 6254 CPU\",\"inLanguage\":\"en-US\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/#website\"},\"breadcrumb\":{\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/topic\\\/fluent-not-starting-first-iteration\\\/#breadcrumblist\"},\"datePublished\":\"2024-07-16T12:34:11+00:00\",\"dateModified\":\"2024-07-16T12:34:11+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\"}}]}\n\t\t<\/script>\n\t\t<!-- All in One SEO -->\n\n","aioseo_head_json":{"title":"Fluent not starting first iteration | Ansys Learning Forum","description":"Greetings,I am trying to run a 29M polyhedral cell mesh using the pressure-based Coupled solver with k-omega SST. Previously, it would initialize using fmg, but now it stalls on the first step, so I am using hybrid initialization. I am trying to get the first real iteration to solve.Computer specs: Intel(R) Xeon(R) Gold 6254 CPU","canonical_url":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/fluent-not-starting-first-iteration\/","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"BreadcrumbList","@id":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/fluent-not-starting-first-iteration\/#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\/fluent-not-starting-first-iteration\/#listItem","name":"Fluent not starting first iteration"},"previousItem":{"@type":"ListItem","@id":"https:\/\/innovationspace.ansys.com\/forum#listItem","name":"Home"}},{"@type":"ListItem","@id":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/fluent-not-starting-first-iteration\/#listItem","position":3,"name":"Fluent not starting first iteration","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\/fluent-not-starting-first-iteration\/#webpage","url":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/fluent-not-starting-first-iteration\/","name":"Fluent not starting first iteration | Ansys Learning Forum","description":"Greetings,I am trying to run a 29M polyhedral cell mesh using the pressure-based Coupled solver with k-omega SST. Previously, it would initialize using fmg, but now it stalls on the first step, so I am using hybrid initialization. I am trying to get the first real iteration to solve.Computer specs: Intel(R) Xeon(R) Gold 6254 CPU","inLanguage":"en-US","isPartOf":{"@id":"https:\/\/innovationspace.ansys.com\/forum\/#website"},"breadcrumb":{"@id":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/fluent-not-starting-first-iteration\/#breadcrumblist"},"datePublished":"2024-07-16T12:34:11+00:00","dateModified":"2024-07-16T12:34:11+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":"Fluent not starting first iteration | Ansys Learning Forum","og:description":"Greetings,I am trying to run a 29M polyhedral cell mesh using the pressure-based Coupled solver with k-omega SST. Previously, it would initialize using fmg, but now it stalls on the first step, so I am using hybrid initialization. I am trying to get the first real iteration to solve.Computer specs: Intel(R) Xeon(R) Gold 6254 CPU","og:url":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/fluent-not-starting-first-iteration\/","article:published_time":"2024-07-16T12:34:11+00:00","article:modified_time":"2024-07-16T12:34:11+00:00","twitter:card":"summary_large_image","twitter:title":"Fluent not starting first iteration | Ansys Learning Forum","twitter:description":"Greetings,I am trying to run a 29M polyhedral cell mesh using the pressure-based Coupled solver with k-omega SST. Previously, it would initialize using fmg, but now it stalls on the first step, so I am using hybrid initialization. I am trying to get the first real iteration to solve.Computer specs: Intel(R) Xeon(R) Gold 6254 CPU"},"aioseo_meta_data":{"post_id":"372099","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":"content","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":true,"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":"2024-10-28 16:37:25","updated":"2024-10-28 16:37:25","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\/forum\" 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\/forum\/topics\/\" title=\"Topics\">Topics<\/a>\n\t\t<\/span><span class=\"aioseo-breadcrumb-separator\">&raquo;<\/span><span class=\"aioseo-breadcrumb\">\n\t\t\tFluent not starting first iteration\n\t\t<\/span><\/div>","aioseo_breadcrumb_json":[{"label":"Home","link":"https:\/\/innovationspace.ansys.com\/forum"},{"label":"Topics","link":"https:\/\/innovationspace.ansys.com\/forum\/topics\/"},{"label":"Fluent not starting first iteration","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/fluent-not-starting-first-iteration\/"}],"acf":[],"custom_fields":[{"0":{"_bbp_subscription":["437009","199"],"_bbp_author_ip":["66.64.59.238"]," _bbp_last_reply_id":["0"]," _bbp_likes_count":["0"],"_btv_view_count":["113"],"_bbp_topic_status":["unanswered"],"_bbp_topic_id":["372099"],"_bbp_forum_id":["27792"],"_bbp_engagement":["199","437009"],"_bbp_voice_count":["2"],"_bbp_reply_count":["1"],"_bbp_last_reply_id":["372106"],"_bbp_last_active_id":["372106"],"_bbp_last_active_time":["2024-07-16 12:53:46"]},"test":"goehlerkingatec-com"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/372099","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics"}],"about":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/types\/topic"}],"version-history":[{"count":0,"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/372099\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=372099"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}