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CHANGE the TIME STEP during the analysis
Posted Dec 16, 2011, 11:19 a.m. EST Version 4.2a 1 Reply
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Hello everybody,
I would like to know, if it is possible to change the time step during the analysis. E.g. at the beginning you need very small step and at the end it is ok with larger... or vice versa. Logarithmic function or something like that. I couldn't find anything in the help or in COMSOL settings. Does anybody know how to do it?
Thank you very much!
Katerina
I would like to know, if it is possible to change the time step during the analysis. E.g. at the beginning you need very small step and at the end it is ok with larger... or vice versa. Logarithmic function or something like that. I couldn't find anything in the help or in COMSOL settings. Does anybody know how to do it?
Thank you very much!
Katerina
1 Reply Last Post Dec 16, 2011, 3:54 p.m. EST
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Posted:
1 decade ago
Hi
one often define the time steps with a range() operator
i.e. range(0,0.1,1) = { 0 0.1 0.2 0.3 0.4 0.5 ... 0.9 1}
but you can also write
10^{range(-3,1,3)} = { 1E-3 1E-2 1E-1 1E0 1E+1 1E+2 1E+3 }
or any combination
0 0.001 range(0.1,0.2,1) range(10,0.1,11) 100 1000
etc, so long you define amonotonous set
--
Good luck
Ivar
one often define the time steps with a range() operator
i.e. range(0,0.1,1) = { 0 0.1 0.2 0.3 0.4 0.5 ... 0.9 1}
but you can also write
10^{range(-3,1,3)} = { 1E-3 1E-2 1E-1 1E0 1E+1 1E+2 1E+3 }
or any combination
0 0.001 range(0.1,0.2,1) range(10,0.1,11) 100 1000
etc, so long you define amonotonous set
--
Good luck
Ivar