{"id":165871,"date":"2023-03-17T13:10:29","date_gmt":"2023-03-17T13:10:29","guid":{"rendered":"\/knowledge\/forums\/topic\/how-to-transport-uds-values-back-from-exit\/"},"modified":"2023-07-31T12:26:54","modified_gmt":"2023-07-31T12:26:54","slug":"how-to-transport-uds-values-back-from-exit","status":"publish","type":"topic","link":"https:\/\/innovationspace.ansys.com\/knowledge\/forums\/topic\/how-to-transport-uds-values-back-from-exit\/","title":{"rendered":"How to transport UDS values back from exit"},"content":{"rendered":"<p>When using UDS, the scalar value set at the boundary is usually transported according to the obtained flow field.   Conversely, if you want to set a scalar value at the outlet and want to transport the scalar value backward from the outlet as a reverse tracer, there is a way to set it to return a negative flux as a convection term.   However, since the default function cannot be used, processing will be performed using DEFINE_UDS_FLUX.   Please refer to the attached document. <\/p>\n<p>Attachments:<br \/>\n1. <a href=https:\/\/ansys13.ansys.com\/KnowledgeArticles\/Phase-1\/2060743\/2060743.pdf>2060743.pdf<\/a><br \/>\n2. <a href= https:\/\/ansys13.ansys.com\/KnowledgeArticles\/Phase-1\/2060743\/2060743.zip>2060743.zip<\/a><\/p>\n","protected":false},"template":"","class_list":["post-165871","topic","type-topic","status-publish","hentry","topic-tag-2020-r1","topic-tag-fluent","topic-tag-fluid-dynamics","topic-tag-general","topic-tag-general-fluent"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 4.9.10 - aioseo.com -->\n\t<meta name=\"description\" content=\"When using UDS, the scalar value set at the boundary is usually transported according to the obtained flow field. 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