Discussion Closed This discussion was created more than 6 months ago and has been closed. To start a new discussion with a link back to this one, click here.
2D axial symmetry - remeshing due to prescribed displacement fails close to axis?
Posted 14.01.2021, 20:38 GMT-5 Fluid & Heat, Computational Fluid Dynamics (CFD), Mesh Version 5.4 0 Replies
Please login with a confirmed email address before reporting spam
Hello everyone,
Short version: FSI 2D axially symmetric time-dependent simulation with solid moving along symmetry axis fails presumably because of remeshing failure on the solid-liquid boundary close to the symmetry axis. See image for full explanation.
Long version: I am doing a fluid-solid interaction simulation. It is an axially symmetric 3D simulation, where a solid plate moves parallel to the symmetry axis within a pipe filled with fluid. I am using a prescribed displacement for the moving solid domain and all its edges/vertices, and a deforming Yeon mesh to accomodate for the distortion of the fluid with automatic remeshing. The solid moves fine, but the simulation fails because there is an inversion on the solid-fluid boundary close to the axis symmetry. I tried several conditions, but I am showing you a clear example where no matter how sensitive to distortion the remeshing is, the simulation fails. The less sensitive simulation shows the inversion issue very well.
Any suggestions? Is what I am trying to do not possible on comsol? Thank you very much for your help!
Christos
Attachments:
Hello Christos Michas
Your Discussion has gone 30 days without a reply. If you still need help with COMSOL and have an on-subscription license, please visit our Support Center for help.
If you do not hold an on-subscription license, you may find an answer in another Discussion or in the Knowledge Base.