{"id":165165,"date":"2023-03-17T08:59:34","date_gmt":"2023-03-17T08:59:34","guid":{"rendered":"\/knowledge\/forums\/topic\/can-flow-in-boundary-be-normal-to-a-3d-cylindrical-surface\/"},"modified":"2023-07-31T12:30:43","modified_gmt":"2023-07-31T12:30:43","slug":"can-flow-in-boundary-be-normal-to-a-3d-cylindrical-surface","status":"publish","type":"topic","link":"https:\/\/innovationspace.ansys.com\/knowledge\/forums\/topic\/can-flow-in-boundary-be-normal-to-a-3d-cylindrical-surface\/","title":{"rendered":"Can flow in boundary be normal to a 3D cylindrical surface?"},"content":{"rendered":"<p>If user is using Autodyn 3D multi-material Euler solver or Ideal gas Euler solver, the Euler mesh has to be rectilinear so you cannot define the flow-in boundary condition through the normal of a cylindrical surface.   If you have to use this type of boundary condition, you need to edit Autodyn user subroutine EXFLOW to enter different flow-in velocity components at each Euler element and make sure the flow-in direction is always normal to the given cylindrical surface.<\/p>\n","protected":false},"template":"","class_list":["post-165165","topic","type-topic","status-publish","hentry","topic-tag-19-1","topic-tag-autodyn","topic-tag-boundary-conditions","topic-tag-explicit-autodyn","topic-tag-model-generation","topic-tag-structural-mechanics"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_wp_page_template":["default"],"_bbp_last_active_time":["3\/15\/2023 20:20"],"_bbp_forum_id":["27789"],"_bbp_author_ip":["23.56.168.180"],"_btv_view_count":["594"],"siebel_km_number":["2055275"],"product_version":["19.1"],"km_published_date":["2018-07-11T00:00:00.000Z"],"family":["Structural Mechanics"],"application_name":["AUTODYN"]},"test":"articlesansys-com"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/knowledge\/wp-json\/wp\/v2\/topics\/165165","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/innovationspace.ansys.com\/knowledge\/wp-json\/wp\/v2\/topics"}],"about":[{"href":"https:\/\/innovationspace.ansys.com\/knowledge\/wp-json\/wp\/v2\/types\/topic"}],"version-history":[{"count":0,"href":"https:\/\/innovationspace.ansys.com\/knowledge\/wp-json\/wp\/v2\/topics\/165165\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/knowledge\/wp-json\/wp\/v2\/media?parent=165165"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}