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August 8, 2018, 11:35 |
Polyflow does not accept the mesh
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#1 |
New Member
Jasmina
Join Date: Apr 2018
Location: Germany
Posts: 11
Rep Power: 8 |
Hello,
I want to model a high viscous flow through a conical die with Polyflow. I double checked the setup and adjusted the mesh again and again - but I always receive the same Error-message. The calculation didn't converge because of bad shaped elements. Here is the original message: Summary of the simulation: The computation failed. * Expert tool diagnostics * The problem F.E.M. Task has not converged. * Expert tool advice in order to optimize the simulation * At least one bad element has been detected in the mesh. The worst has the following feature(s) Too small angle in element 276439, (x,y,z) = (0.027134, 8.2309e-005, 8.2309e-005). This can lead to local inaccuracies and possibly convergence difficulties. It is strongly recommended to fix the mesh. I checked the location of the bad element, it is a different Element with every new setting of the mesh. Unfortunatly I have no ideas how to fix this - the initial mesh looks appropriate to me. I used a hexaeda mesh (and also checked a triangular: same message), the remeshing locations I set for either the whole geometry (pipe + jet) or just the extrudate. The problem stays. Hast anyone an idea how to tell polyflow that the mesh is alright? Many thanks! Jasmina |
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August 19, 2018, 10:10 |
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#2 |
New Member
Jasmina
Join Date: Apr 2018
Location: Germany
Posts: 11
Rep Power: 8 |
... For a better remeshing I also checked the "generate a sliceable free jet" - option. this helped for one setting, but after a small change in other settings (e.g. material data, meshing) the error message (see above) appeared again.
Maybe someone has an idea why.. |
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