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COMSOL 4.1 time scaling coefficient

Posted Apr 1, 2011, 3:18 p.m. EDT Version 4.1 3 Replies

Cindy Wang
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Anyone know where I can find the time-scaling coefficient in COMSOL 4.1? In comsol 3.5 the time-scaling coefficient can be inputted in the subdomain window for convection and diffusion problems. I can't seem to find it for COMSOL 4.1.

Thanks for the help!
3 Replies Last Post Apr 4, 2011, 1:07 a.m. EDT
Ivar KJELBERG COMSOL Multiphysics(r) fan, retired, former "Senior Expert" at CSEM SA (CH)
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Posted: 1 decade ago Apr 2, 2011, 10:53 a.m. EDT
Hi

I'm not sure its implemented, but you can always use a 30[hour] or 30[min] or even 30[day] and 3[year] as unit to get COMSOL (not sure if a "standard month" exist) to look after how many seconds that is, and for the plots you rescale the same way

--
Good luck
Ivar
Hi I'm not sure its implemented, but you can always use a 30[hour] or 30[min] or even 30[day] and 3[year] as unit to get COMSOL (not sure if a "standard month" exist) to look after how many seconds that is, and for the plots you rescale the same way -- Good luck Ivar
Cindy Wang
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Posted: 1 decade ago Apr 3, 2011, 11:30 p.m. EDT
Thanks for the response. Do you also know how to implement a 1D problem in COMSOL 4.1 using spherical coordinates? In COMSOL 3.5 I was able to do this by setting the time scaling coefficient to r*r, but since now this can't be done in COMSOL 4.1.
Thanks for the response. Do you also know how to implement a 1D problem in COMSOL 4.1 using spherical coordinates? In COMSOL 3.5 I was able to do this by setting the time scaling coefficient to r*r, but since now this can't be done in COMSOL 4.1.
Ivar KJELBERG COMSOL Multiphysics(r) fan, retired, former "Senior Expert" at CSEM SA (CH)
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Posted: 1 decade ago Apr 4, 2011, 1:07 a.m. EDT
Hi

interesting way of using the time constant ;)

but don't you also need to correct the spatial dimension ?

I believe you should send this question to support, as it might give them ideas of alternate use of features in the programme

--
Good luck
Ivar
Hi interesting way of using the time constant ;) but don't you also need to correct the spatial dimension ? I believe you should send this question to support, as it might give them ideas of alternate use of features in the programme -- Good luck Ivar

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