{"id":39519,"date":"2019-12-10T15:52:29","date_gmt":"2019-12-10T15:52:29","guid":{"rendered":"\/forum\/forums\/topic\/how-to-simulate-the-magnus-effect-on-a-rotating-cylinder\/"},"modified":"2019-12-10T15:52:29","modified_gmt":"2019-12-10T15:52:29","slug":"how-to-simulate-the-magnus-effect-on-a-rotating-cylinder","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/how-to-simulate-the-magnus-effect-on-a-rotating-cylinder\/","title":{"rendered":"How to simulate the Magnus Effect on a rotating cylinder ?"},"content":{"rendered":"<p>Hello,<\/p>\n<p><\/p>\n<p>&nbsp;<\/p>\n<p><\/p>\n<p>I would like to simulate the air flow around a rotating cylinder to highlight the Magnus effect.<\/p>\n<p><\/p>\n<p>I managed to get a good simulation with a 2D simulation, thanks to some tutorial out here, but I can&#8217;t manage to do it in 3D.<\/p>\n<p><\/p>\n<p>I followed this tutorial : https:\/\/www.youtube.com\/watch?v=ejpMKcH0hQU<\/p>\n<p><\/p>\n<p>Except that I only put one cylinder and it was not an elliptical one, but everything else is the same. However, when i want to rotate my cylinder, I would use the &#8220;rotating wall&#8221; option like I did in my 2D simulation, but it doesn&#8217;t work. I didn&#8217;t really know what to rotate so I tried with everyone of my walls.<\/p>\n<p><\/p>\n<p>This is my 2D simulation :<\/p>\n<p><\/p>\n<p>&nbsp;<img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/us.v-cdn.net\/6032193\/uploads\/attachments\/d1978389-c05c-4ccd-af82-ab1f00f8555f\/67797a18-7ebe-4ecb-958c-ab1f0101c695_simu2d-vitesse.jpg?width=690&amp;upscale=false\" alt=\"\" width=\"407\" height=\"287\"><\/p>\n<p><\/p>\n<p>Quite what i wanted, however when i try in 3D I get this :<\/p>\n<p><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/us.v-cdn.net\/6032193\/uploads\/attachments\/d1978389-c05c-4ccd-af82-ab1f00f8555f\/6e59f05b-b712-434e-a242-ab1f0102bedf_simu3d.jpg?width=690&amp;upscale=false\" alt=\"\" width=\"402\" height=\"282\"><\/p>\n<p><\/p>\n<p>&nbsp;<\/p>\n<p><\/p>\n<p>Which clearly shows my cylinder is not rotating. When I want to rotate my wall, I have this menu :<\/p>\n<p><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/us.v-cdn.net\/6032193\/uploads\/attachments\/d1978389-c05c-4ccd-af82-ab1f00f8555f\/03fd47d6-8553-49f1-9362-ab1f01062a6e_rotating3d.jpg?width=690&amp;upscale=false\" alt=\"\" width=\"811\" height=\"288\"><\/p>\n<p><\/p>\n<p>&nbsp;<\/p>\n<p><\/p>\n<p>And this &#8220;shadow&#8221; thing is the only thing I can try to rotate. I&#8217;m quite new to Ansys so I do not know what I should do without help, so I&#8217;d really appreciate it if someone could help me.<\/p>\n<p><\/p>\n<p>&nbsp;<\/p>\n<p><\/p>\n<p>Thanks,<\/p>\n","protected":false},"template":"","class_list":["post-39519","topic","type-topic","status-closed","hentry"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_old_topic_id":["11698"],"_bbp_old_topic_author_name_id":["Anonymous"],"_bbp_old_is_topic_anonymous_id":["false"],"_bbp_old_closed_status_id":["publish"],"_bbp_author_ip":[null],"_bbp_old_sticky_status_id":["normal"],"_bbp_likes_count":["0"],"_btv_view_count":["1214"],"_bbp_subscription":["245712"],"_bbp_topic_status":["unanswered"],"_bbp_status":["publish"],"_bbp_topic_id":["39519"],"_bbp_forum_id":["27792"],"_bbp_engagement":["199","171374"],"_bbp_voice_count":["2"],"_bbp_reply_count":["4"],"_bbp_last_reply_id":["101035"],"_bbp_last_active_id":["101035"],"_bbp_last_active_time":["2019-12-17 16:14:17"]},"test":"stag"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/39519","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\/39519\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=39519"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}