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[3.5a] Dealing with units
Posted Apr 13, 2010, 9:22 a.m. EDT 3 Replies
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Hello all.
I'm using Comsol 3.5a (PDE, Weak form) to deal with some mechanical problem, and beside some other issues with wich I'll deal later (such as moving mesh), I'm currently annoyed by the fact that I don't manage to get the units to work properly.
In spite of having all the constants set to a specific unit, all my scalar expressions have the same exasperating red brackets. It's not really a big issue and it does not stop the simulations.
I just hope the problem is not that I've missed some lines on the documentation, but I take it to be because I can't set the units of my problem variables (being u, v - displacement - and p - pressure). I really hope that's not a silly question, but do anyone know where to set those units (most likely m and Pa) ?
Thanks
Y.
I'm using Comsol 3.5a (PDE, Weak form) to deal with some mechanical problem, and beside some other issues with wich I'll deal later (such as moving mesh), I'm currently annoyed by the fact that I don't manage to get the units to work properly.
In spite of having all the constants set to a specific unit, all my scalar expressions have the same exasperating red brackets. It's not really a big issue and it does not stop the simulations.
I just hope the problem is not that I've missed some lines on the documentation, but I take it to be because I can't set the units of my problem variables (being u, v - displacement - and p - pressure). I really hope that's not a silly question, but do anyone know where to set those units (most likely m and Pa) ?
Thanks
Y.
3 Replies Last Post Apr 13, 2010, 9:56 a.m. EDT
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Posted:
1 decade ago
Hi
the "red brakets" are warning that your units are inconsistent, which is easily the case if you mix boundary integration and other advanced features, as the units are not always correctly ported in v3.5a (we have to wait for V4 ;)
Just double check that it's correct, the results should be, if you are consistent with the variables
Have fun Comsoling
Ivar
the "red brakets" are warning that your units are inconsistent, which is easily the case if you mix boundary integration and other advanced features, as the units are not always correctly ported in v3.5a (we have to wait for V4 ;)
Just double check that it's correct, the results should be, if you are consistent with the variables
Have fun Comsoling
Ivar
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Posted:
1 decade ago
Thanks for the reply, I will wait until the v4 then :)
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Posted:
1 decade ago
Whoops… It seems there is some bad login procedure on my computer