{"id":346733,"date":"2024-01-26T09:08:04","date_gmt":"2024-01-26T09:08:04","guid":{"rendered":"\/forum\/forums\/reply\/346733\/"},"modified":"2024-01-26T09:08:04","modified_gmt":"2024-01-26T09:08:04","slug":"346733","status":"publish","type":"reply","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/346733\/","title":{"rendered":"Reply To: FLUENT MultiPhase &#8211; floating point exception 6hrs into calculations"},"content":{"rendered":"<p>&lt;p&gt;I changed some settings in the multiphase transient model, such as the mesh (much more refined), and the oulet and inlet pressure be the same (100,000Pa gauge). After 3000 iterations, before the flow managed to escape far from the inlet nozzle, the floating point error returned.&nbsp;&lt;\/p&gt;&lt;p&gt;According to the logs, it detected backflow at the outlet and then divergence, and then the floating point error.&lt;br&gt;&lt;br&gt;Here are the results at the 3000th iteration:&lt;br&gt;<img decoding=\"async\" src=\"\/forum\/wp-content\/uploads\/sites\/2\/2024\/01\/26-01-2024-1706259987-mceclip1.png\" \/><img decoding=\"async\" src=\"\/forum\/wp-content\/uploads\/sites\/2\/2024\/01\/26-01-2024-1706260003-mceclip2.png\" \/><img decoding=\"async\" src=\"\/forum\/wp-content\/uploads\/sites\/2\/2024\/01\/26-01-2024-1706260025-mceclip3.png\" \/>&lt;\/p&gt;<\/p>\n","protected":false},"template":"","class_list":["post-346733","reply","type-reply","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=\"I changed some settings in the multiphase transient model, such as the mesh (much more refined), and the oulet and inlet pressure be the same (100,000Pa gauge). After 3000 iterations, before the flow managed to escape far from the inlet nozzle, the floating point error returned. According to the logs, it detected backflow at the outlet\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<link rel=\"canonical\" href=\"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/346733\/\" \/>\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=\"Reply To: FLUENT MultiPhase \u2013 floating point exception 6hrs into calculations | Ansys Learning Forum\" \/>\n\t\t<meta property=\"og:description\" content=\"I changed some settings in the multiphase transient model, such as the mesh (much more refined), and the oulet and inlet pressure be the same (100,000Pa gauge). After 3000 iterations, before the flow managed to escape far from the inlet nozzle, the floating point error returned. According to the logs, it detected backflow at the outlet\" \/>\n\t\t<meta property=\"og:url\" content=\"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/346733\/\" \/>\n\t\t<meta property=\"og:image\" content=\"https:\/\/innovationspace.ansys.com\/forum\/forum\/wp-content\/uploads\/sites\/2\/2024\/01\/26-01-2024-1706259987-mceclip1.png\" \/>\n\t\t<meta property=\"og:image:secure_url\" content=\"https:\/\/innovationspace.ansys.com\/forum\/forum\/wp-content\/uploads\/sites\/2\/2024\/01\/26-01-2024-1706259987-mceclip1.png\" \/>\n\t\t<meta property=\"article:published_time\" content=\"2024-01-26T09:08:04+00:00\" \/>\n\t\t<meta property=\"article:modified_time\" content=\"2024-01-26T09:08:04+00:00\" \/>\n\t\t<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n\t\t<meta name=\"twitter:title\" content=\"Reply To: FLUENT MultiPhase \u2013 floating point exception 6hrs into calculations | Ansys Learning Forum\" \/>\n\t\t<meta name=\"twitter:description\" content=\"I changed some settings in the multiphase transient model, such as the mesh (much more refined), and the oulet and inlet pressure be the same (100,000Pa gauge). After 3000 iterations, before the flow managed to escape far from the inlet nozzle, the floating point error returned. According to the logs, it detected backflow at the outlet\" \/>\n\t\t<meta name=\"twitter:image\" content=\"https:\/\/innovationspace.ansys.com\/forum\/forum\/wp-content\/uploads\/sites\/2\/2024\/01\/26-01-2024-1706259987-mceclip1.png\" \/>\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\\\/reply\\\/346733\\\/#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\\\/forums\\\/reply\\\/346733\\\/#listItem\",\"name\":\"Reply To: FLUENT MultiPhase &#8211; floating point exception 6hrs into calculations\"}},{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/reply\\\/346733\\\/#listItem\",\"position\":2,\"name\":\"Reply To: FLUENT MultiPhase &#8211; floating point exception 6hrs into calculations\",\"previousItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum#listItem\",\"name\":\"Home\"}}]},{\"@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\\\/reply\\\/346733\\\/#webpage\",\"url\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/reply\\\/346733\\\/\",\"name\":\"Reply To: FLUENT MultiPhase \\u2013 floating point exception 6hrs into calculations | Ansys Learning Forum\",\"description\":\"I changed some settings in the multiphase transient model, such as the mesh (much more refined), and the oulet and inlet pressure be the same (100,000Pa gauge). After 3000 iterations, before the flow managed to escape far from the inlet nozzle, the floating point error returned. According to the logs, it detected backflow at the outlet\",\"inLanguage\":\"en-US\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/#website\"},\"breadcrumb\":{\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/reply\\\/346733\\\/#breadcrumblist\"},\"datePublished\":\"2024-01-26T09:08:04+00:00\",\"dateModified\":\"2024-01-26T09:08:04+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":"Reply To: FLUENT MultiPhase \u2013 floating point exception 6hrs into calculations | Ansys Learning Forum","description":"I changed some settings in the multiphase transient model, such as the mesh (much more refined), and the oulet and inlet pressure be the same (100,000Pa gauge). After 3000 iterations, before the flow managed to escape far from the inlet nozzle, the floating point error returned. According to the logs, it detected backflow at the outlet","canonical_url":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/346733\/","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"BreadcrumbList","@id":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/346733\/#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\/forums\/reply\/346733\/#listItem","name":"Reply To: FLUENT MultiPhase &#8211; floating point exception 6hrs into calculations"}},{"@type":"ListItem","@id":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/346733\/#listItem","position":2,"name":"Reply To: FLUENT MultiPhase &#8211; floating point exception 6hrs into calculations","previousItem":{"@type":"ListItem","@id":"https:\/\/innovationspace.ansys.com\/forum#listItem","name":"Home"}}]},{"@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\/reply\/346733\/#webpage","url":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/346733\/","name":"Reply To: FLUENT MultiPhase \u2013 floating point exception 6hrs into calculations | Ansys Learning Forum","description":"I changed some settings in the multiphase transient model, such as the mesh (much more refined), and the oulet and inlet pressure be the same (100,000Pa gauge). After 3000 iterations, before the flow managed to escape far from the inlet nozzle, the floating point error returned. According to the logs, it detected backflow at the outlet","inLanguage":"en-US","isPartOf":{"@id":"https:\/\/innovationspace.ansys.com\/forum\/#website"},"breadcrumb":{"@id":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/346733\/#breadcrumblist"},"datePublished":"2024-01-26T09:08:04+00:00","dateModified":"2024-01-26T09:08:04+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":"Reply To: FLUENT MultiPhase \u2013 floating point exception 6hrs into calculations | Ansys Learning Forum","og:description":"I changed some settings in the multiphase transient model, such as the mesh (much more refined), and the oulet and inlet pressure be the same (100,000Pa gauge). After 3000 iterations, before the flow managed to escape far from the inlet nozzle, the floating point error returned. According to the logs, it detected backflow at the outlet","og:url":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/346733\/","og:image":"https:\/\/innovationspace.ansys.com\/forum\/forum\/wp-content\/uploads\/sites\/2\/2024\/01\/26-01-2024-1706259987-mceclip1.png","og:image:secure_url":"https:\/\/innovationspace.ansys.com\/forum\/forum\/wp-content\/uploads\/sites\/2\/2024\/01\/26-01-2024-1706259987-mceclip1.png","article:published_time":"2024-01-26T09:08:04+00:00","article:modified_time":"2024-01-26T09:08:04+00:00","twitter:card":"summary_large_image","twitter:title":"Reply To: FLUENT MultiPhase \u2013 floating point exception 6hrs into calculations | Ansys Learning Forum","twitter:description":"I changed some settings in the multiphase transient model, such as the mesh (much more refined), and the oulet and inlet pressure be the same (100,000Pa gauge). After 3000 iterations, before the flow managed to escape far from the inlet nozzle, the floating point error returned. According to the logs, it detected backflow at the outlet","twitter:image":"https:\/\/innovationspace.ansys.com\/forum\/forum\/wp-content\/uploads\/sites\/2\/2024\/01\/26-01-2024-1706259987-mceclip1.png"},"aioseo_meta_data":{"post_id":"346733","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 17:03:03","updated":"2026-08-25 01:56:51","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\tReply To: FLUENT MultiPhase \u2013 floating point exception 6hrs into calculations\n\t\t<\/span><\/div>","aioseo_breadcrumb_json":[{"label":"Home","link":"https:\/\/innovationspace.ansys.com\/forum"},{"label":"Reply To: FLUENT MultiPhase &#8211; floating point exception 6hrs into calculations","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/346733\/"}],"acf":[],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/replies\/346733","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/replies"}],"about":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/types\/reply"}],"version-history":[{"count":0,"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/replies\/346733\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=346733"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}