{"id":450532,"date":"2026-01-16T09:27:45","date_gmt":"2026-01-16T09:27:45","guid":{"rendered":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/incorrect-component-sorting-and-streamwise-direction-in-cfd-post\/"},"modified":"2026-01-16T09:27:45","modified_gmt":"2026-01-16T09:27:45","slug":"incorrect-component-sorting-and-streamwise-direction-in-cfd-post","status":"publish","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/incorrect-component-sorting-and-streamwise-direction-in-cfd-post\/","title":{"rendered":"Incorrect Component Sorting and Streamwise Direction in CFD-Post"},"content":{"rendered":"<p>&lt;p&gt;&lt;span style=&#8221;color: #34495e;&#8221;&gt;Hi everyone,&lt;\/span&gt;&lt;br&gt;I am currently working on a simulation of a <em><strong>t&lt;span style=&#8221;text-decoration: underline;&#8221;&gt;wo-stage turbine&lt;\/span&gt;<\/strong><\/em> using Ansys Fluent and performing post-processing in &lt;span style=&#8221;text-decoration: underline;&#8221;&gt;<em><strong>CFD-Post (Turbo Mode)<\/strong><\/em>&lt;\/span&gt;.&lt;br&gt;I have encountered a topology recognition issue during the Turbo Initialization step. The software fails to correctly identify the sequence of the blade rows. Specifically:&lt;br&gt;&lt;span style=&#8221;text-decoration: underline;&#8221;&gt;<em><strong>Wrong Component Order<\/strong><\/em>:&lt;\/span&gt; The topology detection places the last two components (Stage 2) at the top of the list (Inlet side), while the actual first stage is placed at the bottom (Outlet side).&lt;br&gt;Incorrect Streamwise Direction: Consequently, the Streamwise coordinate (0-1) seems to be inverted or calculated based on this incorrect order.&lt;br&gt;I have checked my domain names, but the auto-initialization still misinterprets the flow path.&lt;br&gt;<em><strong>My Questions:<\/strong><\/em>&lt;br&gt;Is there a way to <em>&lt;span style=&#8221;text-decoration: underline;&#8221;&gt;<strong>manually reorder the components<\/strong>&lt;\/span&gt;<\/em> in the Turbo Initialization tab to correct the topology?&lt;br&gt;Could this be related to the definition of the Rotation Axis (e.g., flow is in -Z direction but axis is +Z)? How should I adjust the axis definition to fix the streamwise sorting?&lt;br&gt;Any suggestions on how to fix this topology issue would be greatly appreciated.&lt;br&gt;Thanks in advance!&lt;\/p&gt;&lt;p&gt;<img decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2026\/01\/16-01-2026-1768555652-f458a25516572cb00c6d3b50de6abd4.png\" alt=\"\" \/>&lt;\/p&gt;&lt;p&gt;<img decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2026\/01\/16-01-2026-1768555637-b96fa89c8c3b4dc43218edf9637df96.png\" alt=\"\" \/>&lt;\/p&gt;<\/p>\n","protected":false},"template":"","class_list":["post-450532","topic","type-topic","status-publish","hentry","topic-tag-ansys-cfd-post-1","topic-tag-turbo-machinery"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_forum_id":["291846"],"_bbp_topic_id":["450532"],"_bbp_author_ip":["156.229.164.178"],"_bbp_last_reply_id":["450583"],"_bbp_last_active_id":["450583"],"_bbp_last_active_time":["2026-01-17 06:09:29"],"_bbp_reply_count":["2"],"_bbp_reply_count_hidden":["0"],"_bbp_voice_count":["2"],"_bbp_engagement":["526202","34559"],"_btv_view_count":["172"],"_bbp_topic_status":["unanswered"],"_bbp_subscription":["34559","526202"]},"test":"james411projectgmail-com"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/450532","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\/450532\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=450532"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}