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Time dependence!!!

Posted 12.06.2012, 08:41 GMT-4 Heat Transfer & Phase Change Version 3.5a 2 Replies

Evagelos Gkanas
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Hello,

I am working on a model which consists of 2 tanks. I would like to ask if anyone knows how to force the first tank to operate between a time spacing and to make the second tank operate after the first one has finished (after the first time steping)..

Thank you very much!!
2 Replies Last Post 13.06.2012, 05:47 GMT-4
Ivar KJELBERG COMSOL Multiphysics(r) fan, retired, former "Senior Expert" at CSEM SA (CH)
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Posted: 1 decade ago 12.06.2012, 15:14 GMT-4
Hi

that depends on what you need to change between your 2 states, with matlab you can control it directly, in the GUI you can do int manually, solve a first time series, adapt your model and continue by using the last time step as initial conditions (I believe it was already possible in 3.5 without matlab, have a doubt now).

In certain cases you can tweak the BC formulas by a *(t<xx), or a *(t>yy) provided the "0" entry is not distrubing the model

--
Good luck
Ivar
Hi that depends on what you need to change between your 2 states, with matlab you can control it directly, in the GUI you can do int manually, solve a first time series, adapt your model and continue by using the last time step as initial conditions (I believe it was already possible in 3.5 without matlab, have a doubt now). In certain cases you can tweak the BC formulas by a *(tyy) provided the "0" entry is not distrubing the model -- Good luck Ivar
Evagelos Gkanas
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Posted: 1 decade ago 13.06.2012, 05:47 GMT-4
Thank you very much..I will try the matlab first!!
Thank you very much..I will try the matlab first!!

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