Electrical currents in porous media

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Hello!

I am doing simulation of saturated by water sand rock (porosity 0.35). No flow of water, but on the side borders I am applying eleсtric potential difference. Electrical current pathing through water accumulate temperature raising in the rock.

However I can not combine two modules: Electrical current and Heat transfer in Porous media. Comsol requires heat transfer parameters for rock and water, but electrical parameters - only for rock, without water. It can not do both.

How to solve this problem? Am I using wrong modules?

Thank you!



1 Reply Last Post 5 Aug 2020, 06:49 GMT-4
Edgar J. Kaiser Certified Consultant

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Posted: 2 months ago 5 Aug 2020, 06:49 GMT-4

Ekaterina,

the problem is that the ec physics doesn't know about the porosity. It only sees one homogeneous domain. A workaround may be to adapt the electrical conductivity of the domain to an effective conductivity of the porous material.

Cheers Edgar

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Edgar J. Kaiser
emPhys Physical Technology
www.emphys.com
Ekaterina, the problem is that the ec physics doesn't know about the porosity. It only sees one homogeneous domain. A workaround may be to adapt the electrical conductivity of the domain to an effective conductivity of the porous material. Cheers Edgar

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