{"id":364469,"date":"2024-04-26T15:13:40","date_gmt":"2024-04-26T15:13:40","guid":{"rendered":"\/forum\/forums\/topic\/couette-flow-with-objects\/"},"modified":"2024-04-26T15:13:40","modified_gmt":"2024-04-26T15:13:40","slug":"couette-flow-with-objects","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/couette-flow-with-objects\/","title":{"rendered":"Couette flow with objects"},"content":{"rendered":"<p>I am trying to create a couette flow with a sphere in a channel (ansys fluent). The couette flow can fully develop in an empty channel but adding a sphere prevents the flow from fully developing for some reason. Refining the mesh doesn&#8217;t change the results and only seems to make it more difficult for residuals to converge.<\/p>\n<p>The channel is 5mmx100mm and the sphere is 1mm diameter. Widening the channel also seems to make no difference.<\/p>\n<p>This is the profile of velocity in the chanel. It is supposed to be a strait line but I can&#8217;t figure out why it isn&#8217;t.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/attachments.office.net\/owa\/eo2g18%40soton.ac.uk\/service.svc\/s\/GetAttachmentThumbnail?id=AAMkAGQ1ZTc1YmYzLTM1OGYtNDBjZS1hYjc4LWJlNjNmZjhmMDgzZgBGAAAAAABK%2B%2B%2F3wkGxTIIwphzwAxWABwALTcXEtRPdTplJ4Gtg2sS1AAAAAAEMAAALTcXEtRPdTplJ4Gtg2sS1AAVHORkIAAABEgAQAAH1uaS1A%2FVHieiBXwbB6%2Bs%3D&amp;thumbnailType=2&amp;token=eyJhbGciOiJSUzI1NiIsImtpZCI6IkU1RDJGMEY4REE5M0I2NzA5QzQzQTlFOEE2MTQzQzAzRDYyRjlBODAiLCJ0eXAiOiJKV1QiLCJ4NXQiOiI1ZEx3LU5xVHRuQ2NRNm5vcGhROEE5WXZtb0EifQ.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.FyV5dTgp1MbEfztpFijDyHgj-dcE4Bnb21D13lolTeOrP1VFkqzAxsyhJzIjNUYHQFBWVJanRb2i1FuCATzCW-_bPhQOacrCDYbMJuNvkReOJbcU6dJ7BlHRrAQFy9nkvPPLXxXxIUgVKSjlgpRYBpCzaDV7c9ongqwyDoLTv0DQ-fGsxTwE2H0KKzyCaEiIMghHcroXpSRJUAZbwxYgGvXMcdoMMcdMiRoo4yOxA8636-cWWTP-ZIi2bA3uLhjuBNd8LntEBZDXMKL3M_I-zjfwj4pgPVk1jevy7SZEJyO56U-JSdkA__xJ1g7Ck3pZD3slc1jVZiuQS-RdVBD-tA&amp;X-OWA-CANARY=bdvoV9cMZQwAAAAAAAAAACCpab8CZtwYw2GN28IXpWFjeq9vBZ2KYTMNEZTURVEz-j2Xx6s9L3E.&amp;owa=outlook.office365.com&amp;scriptVer=20240412005.17&amp;clientId=D5B736E9A9E548E7BB627CF2C54F8E1A&amp;animation=true\" width=\"557\" height=\"243\"><\/p>\n<p>This is a velocity vector plot around the sphere.<img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/attachments.office.net\/owa\/eo2g18%40soton.ac.uk\/service.svc\/s\/GetAttachmentThumbnail?id=AAMkAGQ1ZTc1YmYzLTM1OGYtNDBjZS1hYjc4LWJlNjNmZjhmMDgzZgBGAAAAAABK%2B%2B%2F3wkGxTIIwphzwAxWABwALTcXEtRPdTplJ4Gtg2sS1AAAAAAEMAAALTcXEtRPdTplJ4Gtg2sS1AAVHORkIAAABEgAQAKjJTDFjISBCoD7tPz%2F9dJU%3D&amp;thumbnailType=2&amp;token=eyJhbGciOiJSUzI1NiIsImtpZCI6IkU1RDJGMEY4REE5M0I2NzA5QzQzQTlFOEE2MTQzQzAzRDYyRjlBODAiLCJ0eXAiOiJKV1QiLCJ4NXQiOiI1ZEx3LU5xVHRuQ2NRNm5vcGhROEE5WXZtb0EifQ.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.FyV5dTgp1MbEfztpFijDyHgj-dcE4Bnb21D13lolTeOrP1VFkqzAxsyhJzIjNUYHQFBWVJanRb2i1FuCATzCW-_bPhQOacrCDYbMJuNvkReOJbcU6dJ7BlHRrAQFy9nkvPPLXxXxIUgVKSjlgpRYBpCzaDV7c9ongqwyDoLTv0DQ-fGsxTwE2H0KKzyCaEiIMghHcroXpSRJUAZbwxYgGvXMcdoMMcdMiRoo4yOxA8636-cWWTP-ZIi2bA3uLhjuBNd8LntEBZDXMKL3M_I-zjfwj4pgPVk1jevy7SZEJyO56U-JSdkA__xJ1g7Ck3pZD3slc1jVZiuQS-RdVBD-tA&amp;X-OWA-CANARY=bdvoV9cMZQwAAAAAAAAAACCpab8CZtwYw2GN28IXpWFjeq9vBZ2KYTMNEZTURVEz-j2Xx6s9L3E.&amp;owa=outlook.office365.com&amp;scriptVer=20240412005.17&amp;clientId=D5B736E9A9E548E7BB627CF2C54F8E1A&amp;animation=true\" width=\"571\" height=\"296\"><\/p>\n<p>Any help figuring this out would be greatly apreciated.<\/p>\n","protected":false},"template":"","class_list":["post-364469","topic","type-topic","status-closed","hentry","topic-tag-fluent-cfd-ansys-1"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 4.9.10 - aioseo.com -->\n\t<meta name=\"description\" content=\"I am trying to create a couette flow with a sphere in a channel (ansys fluent). The couette flow can fully develop in an empty channel but adding a sphere prevents the flow from fully developing for some reason. Refining the mesh doesn&#039;t change the results and only seems to make it more difficult for\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<link rel=\"canonical\" href=\"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/couette-flow-with-objects\/\" \/>\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=\"Couette flow with objects | Ansys Learning Forum\" \/>\n\t\t<meta property=\"og:description\" content=\"I am trying to create a couette flow with a sphere in a channel (ansys fluent). 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The couette flow can fully develop in an empty channel but adding a sphere prevents the flow from fully developing for some reason. 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