{"id":293834,"date":"2023-07-19T11:52:57","date_gmt":"2023-07-19T11:52:57","guid":{"rendered":"\/forum\/forums\/topic\/unsteadiness-in-les-simulation\/"},"modified":"2023-07-19T11:52:57","modified_gmt":"2023-07-19T11:52:57","slug":"unsteadiness-in-les-simulation","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/unsteadiness-in-les-simulation\/","title":{"rendered":"Unsteadiness in LES Simulation"},"content":{"rendered":"<p>Hi,&nbsp;<\/p>\n<p>I am simulating a single compressor blade in fluent 2021 R1. I have obtained a converged solution (attached cL results) and now i am proceeding with LES simulations. I have followed the procedure to simulate LES based simulation, as suggested in ansys user guide and i am using &nbsp;bounded central differencing scheme for both transient scheme (according to the ansys user manual suggestions) and all the flow variables as well but according to the attached cD result attachment, simulation become really unsteady.&nbsp;<\/p>\n<p>Please can i have some recommandations to solve this issue,<\/p>\n<p><img decoding=\"async\" src=\"\/forum\/wp-content\/uploads\/sites\/2\/2023\/07\/19-07-2023-1689767568-LES cD.PNG\" alt=\"\"><\/p>\n<p><img decoding=\"async\" src=\"\/forum\/wp-content\/uploads\/sites\/2\/2023\/07\/19-07-2023-1689767526-Steady state results.PNG\" alt=\"\"><\/p>\n","protected":false},"template":"","class_list":["post-293834","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=\"Hi, I am simulating a single compressor blade in fluent 2021 R1. I have obtained a converged solution (attached cL results) and now i am proceeding with LES simulations. I have followed the procedure to simulate LES based simulation, as suggested in ansys user guide and i am using bounded central differencing scheme for both transient\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<link rel=\"canonical\" href=\"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/unsteadiness-in-les-simulation\/\" \/>\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=\"Unsteadiness in LES Simulation | Ansys Learning Forum\" \/>\n\t\t<meta property=\"og:description\" content=\"Hi, I am simulating a single compressor blade in fluent 2021 R1. I have obtained a converged solution (attached cL results) and now i am proceeding with LES simulations. I have followed the procedure to simulate LES based simulation, as suggested in ansys user guide and i am using bounded central differencing scheme for both transient\" \/>\n\t\t<meta property=\"og:url\" content=\"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/unsteadiness-in-les-simulation\/\" \/>\n\t\t<meta property=\"og:image\" content=\"https:\/\/innovationspace.ansys.com\/forum\/forum\/wp-content\/uploads\/sites\/2\/2023\/07\/19-07-2023-1689767568-LES%20cD.PNG\" \/>\n\t\t<meta property=\"og:image:secure_url\" content=\"https:\/\/innovationspace.ansys.com\/forum\/forum\/wp-content\/uploads\/sites\/2\/2023\/07\/19-07-2023-1689767568-LES%20cD.PNG\" \/>\n\t\t<meta property=\"article:published_time\" content=\"2023-07-19T11:52:57+00:00\" \/>\n\t\t<meta property=\"article:modified_time\" content=\"2023-07-19T11:52:57+00:00\" \/>\n\t\t<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n\t\t<meta name=\"twitter:title\" content=\"Unsteadiness in LES Simulation | Ansys Learning Forum\" \/>\n\t\t<meta name=\"twitter:description\" content=\"Hi, I am simulating a single compressor blade in fluent 2021 R1. I have obtained a converged solution (attached cL results) and now i am proceeding with LES simulations. I have followed the procedure to simulate LES based simulation, as suggested in ansys user guide and i am using bounded central differencing scheme for both transient\" \/>\n\t\t<meta name=\"twitter:image\" content=\"https:\/\/innovationspace.ansys.com\/forum\/forum\/wp-content\/uploads\/sites\/2\/2023\/07\/19-07-2023-1689767568-LES cD.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\\\/topic\\\/unsteadiness-in-les-simulation\\\/#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\\\/unsteadiness-in-les-simulation\\\/#listItem\",\"name\":\"Unsteadiness in LES Simulation\"},\"previousItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum#listItem\",\"name\":\"Home\"}},{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/topic\\\/unsteadiness-in-les-simulation\\\/#listItem\",\"position\":3,\"name\":\"Unsteadiness in LES Simulation\",\"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\\\/unsteadiness-in-les-simulation\\\/#webpage\",\"url\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/topic\\\/unsteadiness-in-les-simulation\\\/\",\"name\":\"Unsteadiness in LES Simulation | Ansys Learning Forum\",\"description\":\"Hi, I am simulating a single compressor blade in fluent 2021 R1. I have obtained a converged solution (attached cL results) and now i am proceeding with LES simulations. I have followed the procedure to simulate LES based simulation, as suggested in ansys user guide and i am using bounded central differencing scheme for both transient\",\"inLanguage\":\"en-US\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/#website\"},\"breadcrumb\":{\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/topic\\\/unsteadiness-in-les-simulation\\\/#breadcrumblist\"},\"datePublished\":\"2023-07-19T11:52:57+00:00\",\"dateModified\":\"2023-07-19T11:52:57+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":"Unsteadiness in LES Simulation | Ansys Learning Forum","description":"Hi, I am simulating a single compressor blade in fluent 2021 R1. 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I have obtained a converged solution (attached cL results) and now i am proceeding with LES simulations. I have followed the procedure to simulate LES based simulation, as suggested in ansys user guide and i am using bounded central differencing scheme for both transient","inLanguage":"en-US","isPartOf":{"@id":"https:\/\/innovationspace.ansys.com\/forum\/#website"},"breadcrumb":{"@id":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/unsteadiness-in-les-simulation\/#breadcrumblist"},"datePublished":"2023-07-19T11:52:57+00:00","dateModified":"2023-07-19T11:52:57+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":"Unsteadiness in LES Simulation | Ansys Learning Forum","og:description":"Hi, I am simulating a single compressor blade in fluent 2021 R1. 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