{"id":30498,"date":"2018-09-19T20:48:01","date_gmt":"2018-09-19T20:48:01","guid":{"rendered":"\/forum\/forums\/topic\/flow-induced-vibration-with-dynamic-mesh\/"},"modified":"2018-09-19T20:48:01","modified_gmt":"2018-09-19T20:48:01","slug":"flow-induced-vibration-with-dynamic-mesh","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/flow-induced-vibration-with-dynamic-mesh\/","title":{"rendered":"Flow-induced vibration with dynamic mesh"},"content":{"rendered":"<p>Hi everyone!<\/p>\n<p><\/p>\n<p>I study flow-induced vibration (FIV) in cylinders and I want to simulate a moving cylinder subject to crossflow in ANSYS Fluent as a translational movement. Experimentally it is conducted with springs, having a natural frequency and a spring constant. I have already read some documents in internet, but I am still not able to do this kind of simulation. I have some questions:<\/p>\n<p><\/p>\n<p>1) Should I use 6 DOF option in Dynamic Mesh tab or it is better to use a UDF to represent the motion? If it works better with UDF, can you give me some ideas?<\/p>\n<p><\/p>\n<p>2) Could you please give a step-by-step tutorial related directly to this problem?<\/p>\n<p><\/p>\n<p>3) I have already tried some cases:<\/p>\n<p><\/p>\n<p>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.1 I defined the cylinder wall as a rigid body and the fluid as deforming;<\/p>\n<p><\/p>\n<p>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.2 With an inner-domain surrounding the cylinder, with both set as rigid body but the inner-domain with passive option enabled in 6 DOF and an outer-domain as deforming. But it hasn&#8217;t worked yet.<\/p>\n<p><\/p>\n<p>4) Should I use overset mesh, or it isn&#8217;t necessary?&nbsp;<\/p>\n<p><\/p>\n<p>Thank you!!<\/p>\n","protected":false},"template":"","class_list":["post-30498","topic","type-topic","status-closed","hentry"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_old_topic_id":["2669"],"_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","0","0","0","0"],"_btv_view_count":["2712"],"_bbp_topic_status":["unanswered"],"_bbp_status":["publish"],"_bbp_topic_id":["30498"],"_bbp_forum_id":["27792"],"_bbp_engagement":["154942","158914"],"_bbp_voice_count":["2"],"_bbp_reply_count":["5"],"_bbp_last_reply_id":["64611"],"_bbp_last_active_id":["64611"],"_bbp_last_active_time":["2018-09-21 18:10:31"]},"test":"matheusroverb"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/30498","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\/30498\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=30498"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}