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A Basic Q regarding the Solver Manager
Posted 6 nov. 2010, 08:21 UTC−4 4 Replies
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Hi!
This is likely to be a trivial question, but I haven't managed to sort out the answer by myself...
I'm using a 2D structural mechanics smpn module.
I'm working on Comsol 3.5a and 4.a, but I'd rather work on version 3.5a in this case.
My Q is pretty general, but for the record I'll just say I'm trying to solve a very simple geometry (a square) of a viscoelastic material. Thus, I'm using the Time Dependent Solver.
I would like to:
1) Solve with a time dependent solver with range(1,0.001,1.5) + a certain deformation gradient (which I had defined under Global expressions).
2) BASED on the former solutions from the first solver, I would like to use a second time dependent solver with a new range(1.5, 0.001, 2) + a different deformation gradient (which means that this time I would like to change some values under global expressions).
In short, I would like to solve a problem using one solver with a certain range, store these solutions and based on these solutions stored to use a second solver, with a continuous range and a changed variable.
I know the answer hides under "Solver Manager" and "Sequential Solver". However, I've already read about it in the help section and unfortunately, nothing seems to work.
Can anyone PLEASE tell me what steps should I take in order for this to work?
Thank you very much,
Tal
This is likely to be a trivial question, but I haven't managed to sort out the answer by myself...
I'm using a 2D structural mechanics smpn module.
I'm working on Comsol 3.5a and 4.a, but I'd rather work on version 3.5a in this case.
My Q is pretty general, but for the record I'll just say I'm trying to solve a very simple geometry (a square) of a viscoelastic material. Thus, I'm using the Time Dependent Solver.
I would like to:
1) Solve with a time dependent solver with range(1,0.001,1.5) + a certain deformation gradient (which I had defined under Global expressions).
2) BASED on the former solutions from the first solver, I would like to use a second time dependent solver with a new range(1.5, 0.001, 2) + a different deformation gradient (which means that this time I would like to change some values under global expressions).
In short, I would like to solve a problem using one solver with a certain range, store these solutions and based on these solutions stored to use a second solver, with a continuous range and a changed variable.
I know the answer hides under "Solver Manager" and "Sequential Solver". However, I've already read about it in the help section and unfortunately, nothing seems to work.
Can anyone PLEASE tell me what steps should I take in order for this to work?
Thank you very much,
Tal
4 Replies Last Post 8 nov. 2010, 07:45 UTC−5
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Posted:
1 decade ago
Hi
My impression is that you could be able to run either in two sequences with a "store" in between, or just link both with two range() functions in the time stepper, nothing says you should use the same step for the full sequence.
--
Good luck
Ivar
My impression is that you could be able to run either in two sequences with a "store" in between, or just link both with two range() functions in the time stepper, nothing says you should use the same step for the full sequence.
--
Good luck
Ivar
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Posted:
1 decade ago
Hi
My impression is that you could be able to run either in two sequences with a "store" in between, or just link both with two range() functions in the time stepper, nothing says you should use the same step for the full sequence.
--
Good luck
Ivar
Dear Ivar,
Let's say I would like to choose the first option you offered - run either two sequences with a "store" in between - May you please be more specific and provide me with the certain steps I'm should do in order to make it work?
This is not the issue of using the same step for the full sequence, but it is the fact that between the first solving and the second solving - the geometry stays the same, but the deformation values are different (I would like to manually change the values of the deformation gradient between the two runs).
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Posted:
1 decade ago
Hi
if you want to change something (numerical values) from the first run, then I would say you do your first run, save it to matlab, adapt it and save it back to COMSOl to start again from there, I do not believe you can rewrite onto a solution within COMSOL
--
Good luck
Ivar
if you want to change something (numerical values) from the first run, then I would say you do your first run, save it to matlab, adapt it and save it back to COMSOl to start again from there, I do not believe you can rewrite onto a solution within COMSOL
--
Good luck
Ivar
Please login with a confirmed email address before reporting spam
Posted:
1 decade ago
Hi
if you want to change something (numerical values) from the first run, then I would say you do your first run, save it to matlab, adapt it and save it back to COMSOl to start again from there, I do not believe you can rewrite onto a solution within COMSOL
--
Good luck
Ivar
Thank You Ivar :)