{"id":430450,"date":"2025-04-30T13:23:32","date_gmt":"2025-04-30T13:23:32","guid":{"rendered":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/turbogrid-periodic-interface-specification\/"},"modified":"2025-04-30T13:23:32","modified_gmt":"2025-04-30T13:23:32","slug":"turbogrid-periodic-interface-specification","status":"publish","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/turbogrid-periodic-interface-specification\/","title":{"rendered":"TurboGrid Periodic Interface Specification"},"content":{"rendered":"<p>&lt;p&gt;From my understanding, the creation of periodic surfaces in TurboGrid only depends on the shape of the associated main blade&#8217;s high and\/or low surfaces (&#8220;Periodic And Passage Interface Surface Method = Blade Extents&#8221;). Although this typically doesn&#8217;t result in any issues, it prevents the user from adjusting\/defining the periodic interfaces. If this is the case it means that the &#8220;Periodic Surface Bias&#8221; CCL setting and the &#8220;Low Periodic&#8221; &amp; &#8220;High Periodic&#8221; objects in the geometry tab are completely ignored.&lt;br&gt;&lt;br&gt;I have a unique problem which requires absolute control of the shape of the periodic surface but I&#8217;m struggling to see if it is at all possible since the user guide is quite lacking in this regard. I see several CCL settings which might allow me to manually define the periodic surface but there is no information online about them. Would someone be able to help me?&lt;\/p&gt;<\/p>\n","protected":false},"template":"","class_list":["post-430450","topic","type-topic","status-publish","hentry","topic-tag-periodic","topic-tag-turbogrid"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_forum_id":["27790"],"_bbp_topic_id":["430450"],"_bbp_subscription":["117670","68667","654688","68996"],"_bbp_author_ip":["41.193.218.50"],"_bbp_last_reply_id":["461302"],"_bbp_last_active_id":["461302"],"_bbp_last_active_time":["2026-07-14 10:28:30"],"_bbp_reply_count":["9"],"_bbp_reply_count_hidden":["0"],"_bbp_voice_count":["4"],"_bbp_engagement":["117670","68667","654688","68996"],"_btv_view_count":["517"],"_bbp_topic_status":["unanswered"]},"test":"bsmkaerospace-co-za"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/430450","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics"}],"about":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/types\/topic"}],"version-history":[{"count":0,"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/430450\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=430450"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}