{"id":167349,"date":"2022-03-15T04:07:00","date_gmt":"2022-03-15T04:07:00","guid":{"rendered":"\/forum\/forums\/topic\/sliding-mesh-results-velocity-vectors-vs-velocity-vectors-in-stn-frame\/"},"modified":"2022-03-25T12:15:03","modified_gmt":"2022-03-25T12:15:03","slug":"sliding-mesh-results-velocity-vectors-vs-velocity-vectors-in-stn-frame","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/sliding-mesh-results-velocity-vectors-vs-velocity-vectors-in-stn-frame\/","title":{"rendered":"Sliding mesh results &#8211; velocity vectors vs velocity vectors in stn frame"},"content":{"rendered":"<div class=\"Item-Body\">\n<div class=\"Message userContent\">\n<p>I have simulated a centrifugal pump for which I am plotting with different styles to visualize results. I don&acute;t quite understand the difference between plotting velocity vectors vs velocity vectors in Stn frame of rotation (see below). It seems to me that plotting them in Stn frame shows the absolute frame of motion and this verifies the general fluid direction the impeller is rotating at (clockwise in this example). But then, plotting the velocity vectors would then be the the velocity observed by the rotating frame of reference?<\/p>\n<p>I find multiple definitions online. Can someone share clarify the difference?<\/p>\n<div class=\"embedExternal embedImage\">\n<div class=\"embedExternal-content\">\n<a class=\"embedImage-link\" href=\"\/forum\/wp-content\/uploads\/forum-uploads\/410\/1TXDKN6X3QH4.png\" rel=\"nofollow noopener\" target=\"_blank\"><br \/>\n<img decoding=\"async\" class=\"embedImage-img\" src=\"\/forum\/wp-content\/uploads\/forum-uploads\/410\/1TXDKN6X3QH4.png\" alt=\"image.png\" \/><br \/>\n<\/a><\/p>\n","protected":false},"template":"","class_list":["post-167349","topic","type-topic","status-closed","hentry","topic-tag-fluent","topic-tag-post-processing","topic-tag-turbomachinery"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_btv_view_count":["705"],"_bbp_likes_count":["0"],"_bbp_subscription":["243179"],"_bbp_topic_status":["unanswered"],"_bbp_status":["publish"],"_bbp_topic_id":["167349"],"_bbp_forum_id":["27792"],"_bbp_engagement":["5976","243179"],"_bbp_voice_count":["2"],"_bbp_reply_count":["1"],"_bbp_last_reply_id":["208421"],"_bbp_last_active_id":["208421"],"_bbp_last_active_time":["2022-03-25 12:15:03"]},"test":"handycardenawisc-edu"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/167349","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\/167349\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=167349"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}