{"id":381374,"date":"2024-09-02T21:22:43","date_gmt":"2024-09-02T21:22:43","guid":{"rendered":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/381374\/"},"modified":"2024-09-02T21:22:43","modified_gmt":"2024-09-02T21:22:43","slug":"381374","status":"publish","type":"reply","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/381374\/","title":{"rendered":"Reply To: Convergence issue in pipe flow"},"content":{"rendered":"<p>&lt;p&gt;Hello NickFL, I initialized the flow from the inlet (Vx=Vy=0 ms, Vz=1 m\/s) as you can see in image 1. I also reduced the step size to 0.05 (in the case of Re=1000) as you suggested which brought me a more stable result compared to before (Image 2). But the oscillation is again more prevalent where the Reynolds number is 1500 (Image 3). The residual of continuity equation doesn&rsquo;t fall below the 10^-3 and the curve remains flattened out. Would you say this solution where the residual curve behave like that is acceptable? Or it not, what would you further suggest me to do?&lt;\/p&gt;&lt;p&gt;<img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2024\/09\/02-09-2024-1725311639-Screenshot 2024-09-02 181438.png\" alt=\"\" width=\"404\" height=\"571\" \/>&nbsp; &nbsp; &nbsp; <img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2024\/09\/02-09-2024-1725311694-Screenshot 2024-09-02 181300.png\" alt=\"\" width=\"870\" height=\"457\" \/>&lt;\/p&gt;&lt;p&gt;&nbsp;&lt;\/p&gt;&lt;p&gt;&nbsp; &nbsp; &nbsp; &nbsp;<img decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2024\/09\/02-09-2024-1725311873-Screenshot 2024-09-03 024735.png\" alt=\"\" \/>&nbsp;&lt;\/p&gt;<\/p>\n","protected":false},"template":"","class_list":["post-381374","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=\"Hello NickFL, I initialized the flow from the inlet (Vx=Vy=0 ms, Vz=1 m\/s) as you can see in image 1. I also reduced the step size to 0.05 (in the case of Re=1000) as you suggested which brought me a more stable result compared to before (Image 2). But the oscillation is again more prevalent\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<link rel=\"canonical\" href=\"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/381374\/\" \/>\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: Convergence issue in pipe flow | Ansys Learning Forum\" \/>\n\t\t<meta property=\"og:description\" content=\"Hello NickFL, I initialized the flow from the inlet (Vx=Vy=0 ms, Vz=1 m\/s) as you can see in image 1. I also reduced the step size to 0.05 (in the case of Re=1000) as you suggested which brought me a more stable result compared to before (Image 2). But the oscillation is again more prevalent\" \/>\n\t\t<meta property=\"og:url\" content=\"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/381374\/\" \/>\n\t\t<meta property=\"og:image\" content=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2024\/09\/02-09-2024-1725311639-Screenshot%202024-09-02%20181438.png\" \/>\n\t\t<meta property=\"og:image:secure_url\" content=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2024\/09\/02-09-2024-1725311639-Screenshot%202024-09-02%20181438.png\" \/>\n\t\t<meta property=\"article:published_time\" content=\"2024-09-02T21:22:43+00:00\" \/>\n\t\t<meta property=\"article:modified_time\" content=\"2024-09-02T21:22:43+00:00\" \/>\n\t\t<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n\t\t<meta name=\"twitter:title\" content=\"Reply To: Convergence issue in pipe flow | Ansys Learning Forum\" \/>\n\t\t<meta name=\"twitter:description\" content=\"Hello NickFL, I initialized the flow from the inlet (Vx=Vy=0 ms, Vz=1 m\/s) as you can see in image 1. I also reduced the step size to 0.05 (in the case of Re=1000) as you suggested which brought me a more stable result compared to before (Image 2). But the oscillation is again more prevalent\" \/>\n\t\t<meta name=\"twitter:image\" content=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2024\/09\/02-09-2024-1725311639-Screenshot 2024-09-02 181438.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\\\/381374\\\/#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\\\/381374\\\/#listItem\",\"name\":\"Reply To: Convergence issue in pipe flow\"}},{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/reply\\\/381374\\\/#listItem\",\"position\":2,\"name\":\"Reply To: Convergence issue in pipe flow\",\"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\\\/381374\\\/#webpage\",\"url\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/reply\\\/381374\\\/\",\"name\":\"Reply To: Convergence issue in pipe flow | Ansys Learning Forum\",\"description\":\"Hello NickFL, I initialized the flow from the inlet (Vx=Vy=0 ms, Vz=1 m\\\/s) as you can see in image 1. I also reduced the step size to 0.05 (in the case of Re=1000) as you suggested which brought me a more stable result compared to before (Image 2). 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I also reduced the step size to 0.05 (in the case of Re=1000) as you suggested which brought me a more stable result compared to before (Image 2). 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I also reduced the step size to 0.05 (in the case of Re=1000) as you suggested which brought me a more stable result compared to before (Image 2). But the oscillation is again more prevalent","inLanguage":"en-US","isPartOf":{"@id":"https:\/\/innovationspace.ansys.com\/forum\/#website"},"breadcrumb":{"@id":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/381374\/#breadcrumblist"},"datePublished":"2024-09-02T21:22:43+00:00","dateModified":"2024-09-02T21:22:43+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: Convergence issue in pipe flow | Ansys Learning Forum","og:description":"Hello NickFL, I initialized the flow from the inlet (Vx=Vy=0 ms, Vz=1 m\/s) as you can see in image 1. I also reduced the step size to 0.05 (in the case of Re=1000) as you suggested which brought me a more stable result compared to before (Image 2). But the oscillation is again more prevalent","og:url":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/381374\/","og:image":"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2024\/09\/02-09-2024-1725311639-Screenshot%202024-09-02%20181438.png","og:image:secure_url":"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2024\/09\/02-09-2024-1725311639-Screenshot%202024-09-02%20181438.png","article:published_time":"2024-09-02T21:22:43+00:00","article:modified_time":"2024-09-02T21:22:43+00:00","twitter:card":"summary_large_image","twitter:title":"Reply To: Convergence issue in pipe flow | Ansys Learning Forum","twitter:description":"Hello NickFL, I initialized the flow from the inlet (Vx=Vy=0 ms, Vz=1 m\/s) as you can see in image 1. I also reduced the step size to 0.05 (in the case of Re=1000) as you suggested which brought me a more stable result compared to before (Image 2). But the oscillation is again more prevalent","twitter:image":"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2024\/09\/02-09-2024-1725311639-Screenshot 2024-09-02 181438.png"},"aioseo_meta_data":{"post_id":"381374","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 16:30:32","updated":"2024-10-28 16:30:32","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: Convergence issue in pipe flow\n\t\t<\/span><\/div>","aioseo_breadcrumb_json":[{"label":"Home","link":"https:\/\/innovationspace.ansys.com\/forum"},{"label":"Reply To: Convergence issue in pipe flow","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/381374\/"}],"acf":[],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/replies\/381374","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\/381374\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=381374"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}