{"id":171035,"date":"2023-06-05T07:05:33","date_gmt":"2023-06-05T07:05:33","guid":{"rendered":"\/knowledge\/forums\/topic\/how-to-define-a-post-processing-plane-inside-a-subdomain-only\/"},"modified":"2023-07-31T12:29:55","modified_gmt":"2023-07-31T12:29:55","slug":"how-to-define-a-post-processing-plane-inside-a-subdomain-only","status":"publish","type":"topic","link":"https:\/\/innovationspace.ansys.com\/knowledge\/forums\/topic\/how-to-define-a-post-processing-plane-inside-a-subdomain-only\/","title":{"rendered":"How to define a post-processing plane inside a subdomain only?"},"content":{"rendered":"<p>In CFX, subdomains can have complicated forms and can consist of many bodies distributed in the entire domain. To create a plane in ANSYS CFD-Post, by default, it is impossible to select subdomains only. Moreover, the &#8220;inside&#8221; CEL function is not available in CFD-Post and using the &#8220;step&#8221; CEL function may be very cumbersome.   So, this is a workaround to create a plane in a subdomain only: 1. Creating a new Additional Variable in ANSYS CFX-Pre, before the calculation: &#8211; Variable Type=Unspecified &#8211; Tensor Type = Scalar &#8211; In the domain, selecting Option = &#8220;Algebraic Equation&#8221;, and Value = the equation &#8220;inside()@subdomain&#8221;.  This variable defines the limits of the subdomain, with a value = 1 inside the subdomain, 0 elsewhere.  2. Running the calculation 3. In CFD-Post, creating the wanted Plane in the whole domain. 4. Then Creating an Iso-Clip on this Plane, with a Visibility Parameter set with the previously created Additional Variable with a value >=1.  ->In this way, the Iso-Clip shows the Plane in the Subdomain only.<\/p>\n","protected":false},"template":"","class_list":["post-171035","topic","type-topic","status-publish","hentry","topic-tag-4422","topic-tag-additional-variable","topic-tag-cfx","topic-tag-fluid-dynamics","topic-tag-general-cfx","topic-tag-post-processing-plane","topic-tag-subdomain"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_wp_page_template":["default"],"_bbp_last_active_time":["2\/6\/2023 20:20"],"_bbp_forum_id":["27796"],"_bbp_author_ip":["209.182.204.162"],"_btv_view_count":["1892"],"siebel_km_number":["2048313"],"product_version":["18"],"km_published_date":["2017-02-14T00:00:00.000Z"],"family":["Fluid Dynamics"],"application_name":["CFX"],"_edit_lock":["1705046816:2"]},"test":"articlesansys-com"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/knowledge\/wp-json\/wp\/v2\/topics\/171035","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\/171035\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/knowledge\/wp-json\/wp\/v2\/media?parent=171035"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}