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Adding PCM to a Building Material with Heat and Moisture Transfer in COMSOL
Posted 2025/02/06 18:05 JST Version 6.2 0 Replies
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Hello,
I am working on a transient simulation in COMSOL Multiphysics, using the "Heat and Moisture Transport in Building Materials" physics. My initial study focused on a bio-based building material, and I obtained satisfactory results.
Now, I want to study the same material mixed with a percentage of PCM. Therefore, I need to model the phase change effect of the PCM while maintaining the heat-moisture coupling. I have tested several configurations, but none work properly. One of the latest approaches I tried is:
In the "Heat Transfer in Building Materials" physics, I added "Solid". Within this solid, I added "Material with Phase Change" and entered all the thermophysical properties of the PCM. I deselected my main material in the building material section so that it would be handled only by the solid with phase change. My model is 1D (interval geometry). When I run the simulation, I get an error, likely because the solid equation lacks the moisture coupling term, which is normally included in the "Building Material" physics.
How can I correctly integrate PCM into my building material while maintaining the heat-moisture coupling? Thank you in advance for your help!
Hello Kenza S
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