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Phase Field Method - define parameters

Posted 8 lug 2010, 16:46 GMT-4 3 Replies

Tahereh Mirmohamadi
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Hi everyone,

I'm using the phase field model in Comsol, but I'm not really sure how to define the required parameters, such as: surface tension coefficient,
interface thickness,
mobility tuning parameter,
phi-derivative of external free energy,
etc.

Anyone any idea how to define these parameters and what are good values to at least start with?

Thanks,
Tara
3 Replies Last Post 15 feb 2013, 04:04 GMT-5
COMSOL Moderator

Hello Tahereh Mirmohamadi

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Mohamed Aymen Ben Hassen
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Posted: 1 decade ago 14 feb 2013, 06:22 GMT-5
Hi Tara,

I think it will be better if you have an experimental configuration and you need just trying to modify your the values demanded by Comsol.
I'll use this idea :-)
good luck
Hi Tara, I think it will be better if you have an experimental configuration and you need just trying to modify your the values demanded by Comsol. I'll use this idea :-) good luck
Fabrice Schlegel COMSOL Employee

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Posted: 1 decade ago 14 feb 2013, 17:23 GMT-5

Dear Tara,

In general, simply use the default values. If you would like to modify them, please refer to p.110 and 111 of the 4.3a microfluidics module user guide in the Phase Field Interface section.

Best,
Fabrice
Dear Tara, In general, simply use the default values. If you would like to modify them, please refer to p.110 and 111 of the 4.3a microfluidics module user guide in the Phase Field Interface section. Best, Fabrice
Mohamed Aymen Ben Hassen
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Posted: 1 decade ago 15 feb 2013, 04:04 GMT-5
Dear Fabrice,
I've a question for you.
If I want to input an anisotropic mobility, not an isotropic one, in a phase field model. How can I do that ?
Best regards.
Dear Fabrice, I've a question for you. If I want to input an anisotropic mobility, not an isotropic one, in a phase field model. How can I do that ? Best regards.

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