{"id":166780,"date":"2023-04-05T14:32:06","date_gmt":"2023-04-05T14:32:06","guid":{"rendered":"\/knowledge\/forums\/topic\/how-can-you-visualize-the-position-of-a-surface-level-in-cfx-post-10-0-for-a-free-surface-flow\/"},"modified":"2023-07-31T12:27:40","modified_gmt":"2023-07-31T12:27:40","slug":"how-can-you-visualize-the-position-of-a-surface-level-in-cfx-post-10-0-for-a-free-surface-flow","status":"publish","type":"topic","link":"https:\/\/innovationspace.ansys.com\/knowledge\/forums\/topic\/how-can-you-visualize-the-position-of-a-surface-level-in-cfx-post-10-0-for-a-free-surface-flow\/","title":{"rendered":"How can you visualize the position of a surface level in CFX Post 10.0 for a free surface flow?"},"content":{"rendered":"<p>The fluid level is not a variable. One needs to use other available variable to detect the position of the free surface. A good indicator is a gradient of density or volume fraction. This gradient will have its maximum at the surface level.  Therefore, define a line at the location of interest, parallel to the gravity vector (i.e. perpendicular to the fluid surface).  To visualize the location of the surface, create a chart with the ordinate displaying Density.Gradient. Its maximum will be at the free surface.<\/p>\n","protected":false},"template":"","class_list":["post-166780","topic","type-topic","status-publish","hentry","topic-tag-4877","topic-tag-cfx-solver","topic-tag-eulerian-multi-phase-flow","topic-tag-fluid-dynamics","topic-tag-multiphase","topic-tag-post-processing"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_wp_page_template":["default"],"_bbp_last_active_time":["5\/4\/2023 20:20"],"_bbp_forum_id":["27809"],"_bbp_author_ip":["209.182.204.162"],"_btv_view_count":["856"],"siebel_km_number":["558686"],"product_version":["10"],"km_published_date":["2006-11-30T00:00:00.000Z"],"family":["Fluid Dynamics"],"application_name":["CFX-Solver"]},"test":"articlesansys-com"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/knowledge\/wp-json\/wp\/v2\/topics\/166780","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\/166780\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/knowledge\/wp-json\/wp\/v2\/media?parent=166780"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}