Menu

Discussion Forum

New Discussion
Filtern

Note: This discussion is about an older version of the COMSOL Multiphysics® software. The information provided may be out of date.

Discussion Closed This discussion was created more than 6 months ago and has been closed. To start a new discussion with a link back to this one, click here.

Heat transfer in porous media with phase change

Posted 09.03.2015, 04:35 GMT-4 Heat Transfer & Phase Change Version 4.4 1 Reply

Filip Karlsson
Send Private Message Flag post as spam

Please login with a confirmed email address before reporting spam

Hi! I am modelling water pipes buried in the ground during a year in a cold winter climate. I want to calculate the frost depth in the ground in order to prevent freezing of the water pipes. I am considering the soil to be the physics "Heat transfer in porous media".

My question: Is it possible to model phase change in the physics "Heat transfer in porous media"?

Because I have been trying without any success, so if any one have any idea in how to solve this problem I will be very grateful!

Many thanks
Filip
1 Reply Last Post 08.05.2015, 06:06 GMT-4
COMSOL Moderator

Hello Filip Karlsson

Your Discussion has gone 30 days without a reply. If you still need help with COMSOL and have an on-subscription license, please visit our Support Center for help.

If you do not hold an on-subscription license, you may find an answer in another Discussion or in the Knowledge Base.

Frank van Gool COMSOL Employee

Please login with a confirmed email address before reporting spam

Posted: 9 years ago 08.05.2015, 06:06 GMT-4
Dear Filip,

you can add the phase change latent heat to your heat capacity material data of the soil.
You can take a look in www.comsol.com/model/phase-change-474
But you need to manually change the material in that case.

There should be plenty of data available on the method, and that is also applicable to soil. Think about the fraction of water vs. solid though in your material.

Best regards,
Frank

Dear Filip, you can add the phase change latent heat to your heat capacity material data of the soil. You can take a look in http://www.comsol.com/model/phase-change-474 But you need to manually change the material in that case. There should be plenty of data available on the method, and that is also applicable to soil. Think about the fraction of water vs. solid though in your material. Best regards, Frank

Note that while COMSOL employees may participate in the discussion forum, COMSOL® software users who are on-subscription should submit their questions via the Support Center for a more comprehensive response from the Technical Support team.

Suggested Content