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Moving mesh ALE
Posted Mar 1, 2013, 2:27 a.m. EST 3 Replies
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Hi,
I am simulating a moving boundary with ALE method.
My program is working fine with a certain geometry, mesh and time, but if I would like to change the geometry or set a larger time, then I get a message: "last time step is not converged".
I attached the model that is not working and the good one.
Please let me know what I am doing wrong.
best regards
I am simulating a moving boundary with ALE method.
My program is working fine with a certain geometry, mesh and time, but if I would like to change the geometry or set a larger time, then I get a message: "last time step is not converged".
I attached the model that is not working and the good one.
Please let me know what I am doing wrong.
best regards
Attachments:
3 Replies Last Post Mar 15, 2013, 3:59 a.m. EDT
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Posted:
1 decade ago
Hi
I'm not sure what is so wrong, in my 4.3a if I clean up the solver sequence, that seems messy or bizarre,
Then set back a time range in the time solver node i.e. 2^range(-4,0.25,3)
then turn off the remeshing, turn on Plot while solving for Each study step, t
hen hit get initial values,
and go to the time plot Surface Plot 1, Coloring tab: turn on wireframe and Quality tab: Resolution: No refinement, Smooting: None (all this to see the mesh deforming while solving)
Then I get a reasonable value, but you should NOT wait 20 sec, as then boundary moves further than the right boundary of your domain and you get inverted mesh elements
--
Good luck
Ivar
I'm not sure what is so wrong, in my 4.3a if I clean up the solver sequence, that seems messy or bizarre,
Then set back a time range in the time solver node i.e. 2^range(-4,0.25,3)
then turn off the remeshing, turn on Plot while solving for Each study step, t
hen hit get initial values,
and go to the time plot Surface Plot 1, Coloring tab: turn on wireframe and Quality tab: Resolution: No refinement, Smooting: None (all this to see the mesh deforming while solving)
Then I get a reasonable value, but you should NOT wait 20 sec, as then boundary moves further than the right boundary of your domain and you get inverted mesh elements
--
Good luck
Ivar
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Posted:
1 decade ago
Thank you Ivar! My model is working now how I wish.
Thank you also for the tip to gauge the moving mesh during simulation.
Thank you also for the tip to gauge the moving mesh during simulation.
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Posted:
1 decade ago
Hello,
I am asking for your support again.
I am trying to extend my 2d model by adding an aluminum plate. I have set up initial conditions in the right way for all the materials as I see when I get the values for initial conditions but when I am trying to compute i have errors. The mesh is not deforming as I thought and I don't know what is the reason.
I have attached the model and please tell me what I don't set up properly
It can be specified initial condition as constants for each material and therefore the model to work?
I am asking for your support again.
I am trying to extend my 2d model by adding an aluminum plate. I have set up initial conditions in the right way for all the materials as I see when I get the values for initial conditions but when I am trying to compute i have errors. The mesh is not deforming as I thought and I don't know what is the reason.
I have attached the model and please tell me what I don't set up properly
It can be specified initial condition as constants for each material and therefore the model to work?
Attachments: