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Initial values error using mapped mesh
Posted Apr 30, 2013, 3:37 p.m. EDT Mesh Version 4.3 1 Reply
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Hello,
Every time I try to use a mapped mesh for a time dependent simulation I have the following error :
---
The following feature has encountered a problem :
failed to find consistent initial values.
System matrix is zero.
Last time step is not converged...
---
It is weird because when I run the same simulation with a mesh generated by default, everything works fine.
My geometry is more or less a rectangle (3D).
Is there anything special to do with the initial condition when a mapped mesh is used ? I don't find anything on the web.
Thank you for your help.
Every time I try to use a mapped mesh for a time dependent simulation I have the following error :
---
The following feature has encountered a problem :
failed to find consistent initial values.
System matrix is zero.
Last time step is not converged...
---
It is weird because when I run the same simulation with a mesh generated by default, everything works fine.
My geometry is more or less a rectangle (3D).
Is there anything special to do with the initial condition when a mapped mesh is used ? I don't find anything on the web.
Thank you for your help.
1 Reply Last Post May 1, 2013, 2:04 a.m. EDT
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Posted:
1 decade ago
Hi
there are no general rule here, and you do not say much about your model, stationary or probably time dependent, initial conditions, the local gradients of your dependent variables , mesh density ...
often the mesh density, diffusivity and time stepping are related, which means that for diffusion equations, where you have initial step or very steep gradients you might have convergence issues
But we cannot guess out here, from what you tell about your model ;)
--
Good luck
Ivar
there are no general rule here, and you do not say much about your model, stationary or probably time dependent, initial conditions, the local gradients of your dependent variables , mesh density ...
often the mesh density, diffusivity and time stepping are related, which means that for diffusion equations, where you have initial step or very steep gradients you might have convergence issues
But we cannot guess out here, from what you tell about your model ;)
--
Good luck
Ivar