{"id":362541,"date":"2024-04-16T16:49:01","date_gmt":"2024-04-16T16:49:01","guid":{"rendered":"\/forum\/forums\/topic\/why-is-there-suddenly-self-interesection-after-creating-driving-dimensions\/"},"modified":"2024-04-16T18:34:55","modified_gmt":"2024-04-16T18:34:55","slug":"why-is-there-suddenly-self-interesection-after-creating-driving-dimensions","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/why-is-there-suddenly-self-interesection-after-creating-driving-dimensions\/","title":{"rendered":"Why is there suddenly self-interesection after creating driving dimensions?"},"content":{"rendered":"

So I’m trying to make a parametric study in fluent. The model is a box (white in pic) inside a flow field. Another box (turquoise in pic) presents the flow field itself, but it’s much bigger than the solid box inside. Also, I created a Body Of Influence (yellow in pic) around the solid box. Its shape is a sphere. For a better understanding, see the picture below. I already got the simulation up and running.<\/p>\n

<\/a><\/p>\n

Now I would like to do a parametric study. The goal is to analyze the flow around the solid box from different directions. It’s my first time doing (or trying to do) a parametric study. From what I read online, I thought that the first thing I needed to do was create the parameters I wanted to change. My idea is, that the boundaries stay the same (so the input\/output of the big flow field) and I rotate the Body of Influence with its dead area (so the solid box) in two directions. So I created 2 driving dimensions (angles), one between the y-axis and x-axis and one between the y-axis and the z-axis. I haven’t changed the angles so far (so they are still 0° as in the original simulation). <\/p>\n

After creating those driving dimensions, I had to update the rest of the simulation. But I got an error:<\/p>\n

Error: 4097 self-interesecting triangles exist in the model, which is above the limit for automatic smoothing ( 10 ). Either CAD plug-ins (instead of CAD readers) were used, which sometimes lead to a Multi-body-part topology, or Share Topology in SCDM\/DM failed at certain locations. In the later case, make sure to invoke Forced Share option in SCDM.<\/em><\/span><\/p>\n

 <\/p>\n

Error: state\/object\/execute-command:Eception encountered in S_ExecuteUpstreamNonExecuteAndThisTask: 4097 self-intersecting triangles exist in the model, which is above the limit for automatic smoothing ( 10 ). Either CAD plug-ins (instead of CAD readers) were used, which sometimes lead to a Multi-body-part topology, or Share Topology in SCDM\/DM failed at certain locations. In the later case, make sure to invoke Forced Share option in SCDM.<\/em><\/span><\/p>\n

Error Object: ()<\/em><\/span><\/p>\n

 <\/p>\n

I don’t get the error. How can there be self-intersecting triangles, if I rotate a sphere inside a fluid? And how do I fix it? If you need any further information, please ask. I’m still a beginner and I am kind of lost ..<\/p>\n","protected":false},"template":"","class_list":["post-362541","topic","type-topic","status-closed","hentry","topic-tag-ansys-error","topic-tag-ansys-fluent","topic-tag-parametric-analysis"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_subscription":["292260","62"],"_bbp_author_ip":["23.206.193.154"]," _bbp_last_reply_id":["0"]," _bbp_likes_count":["0"],"_btv_view_count":["1757"],"_bbp_topic_status":["unanswered"],"_edit_lock":["1713292449:229002"],"_bbp_topic_id":["362541"],"_bbp_forum_id":["27792"],"_bbp_engagement":["62","292260"],"_bbp_voice_count":["2"],"_bbp_reply_count":["3"],"_bbp_last_reply_id":["362829"],"_bbp_last_active_id":["362829"],"_bbp_last_active_time":["2024-04-18 03:06:21"]},"test":"j-sprengeltu-bs-de"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/362541","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":2,"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/362541\/revisions"}],"predecessor-version":[{"id":362558,"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/362541\/revisions\/362558"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=362541"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}