{"id":161636,"date":"2023-01-25T07:16:34","date_gmt":"2023-01-25T07:16:34","guid":{"rendered":"\/knowledge\/forums\/topic\/how-can-i-easily-extract-data-pressure-for-example-at-every-point-along-the-centreline-of-a-pipe-that-has-multiple-elbows-and-changes-profile\/"},"modified":"2023-07-31T12:35:37","modified_gmt":"2023-07-31T12:35:37","slug":"how-can-i-easily-extract-data-pressure-for-example-at-every-point-along-the-centreline-of-a-pipe-that-has-multiple-elbows-and-changes-profile","status":"publish","type":"topic","link":"https:\/\/innovationspace.ansys.com\/knowledge\/forums\/topic\/how-can-i-easily-extract-data-pressure-for-example-at-every-point-along-the-centreline-of-a-pipe-that-has-multiple-elbows-and-changes-profile\/","title":{"rendered":"How can I easily extract data (Pressure for example) at every point along the centreline of a pipe that has multiple elbows and changes profile?"},"content":{"rendered":"<p>In Fluent:   1. Create a UDS with Flux Function = none  2. Set the UDS Value = 1 at the inlet 3. Set the UDS Value = 0 at the outlet 4. Set the UDS Flux = 0 at all other boundaries.   This will create a zero-gradient at the walls thus creating surfaces of constant UDS values perpendicular to the walls.    In CFX:   1. Create a scalar additional variable based on the poisson equation with a kinemeatic diffusivity of 1 m^-2 s^-2 2. Set the AV Value = 1 at the inlet  3. Set the AV Value = 0 at the outlet 4. Set the constant Flux at the walls.    In CFD-Post:  1. Create Isosurfaces of the UDS or additional variable from 0 to 1.   These isosurfaces will be perpendicular to the walls at all locations. Pressure data can then be extracted from these surfaces.<\/p>\n","protected":false},"template":"","class_list":["post-161636","topic","type-topic","status-publish","hentry","topic-tag-4422","topic-tag-fluent","topic-tag-fluent-post-processing","topic-tag-fluid-dynamics","topic-tag-general","topic-tag-post-processing"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_wp_page_template":["default"],"_bbp_forum_id":["27796"],"_bbp_author_ip":["23.56.168.180"],"_bbp_last_active_time":["1-24-2023  20:20:23"],"_btv_view_count":["1530"],"siebel_km_number":["2048339"],"product_version":["18"],"km_published_date":["2017-02-16T12:26:49.000Z"],"family":["Fluid Dynamics"],"application_name":["FLUENT"],"_bbp_likes_count":["0"]},"test":"articlesansys-com"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/knowledge\/wp-json\/wp\/v2\/topics\/161636","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\/161636\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/knowledge\/wp-json\/wp\/v2\/media?parent=161636"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}