[schteff]

Hi,

is it possible to make the heattransfer from a fluid- to a solidregion with the chtMultiRegionFoam solver. My case runs good when I have a "solidheater" but it doesn´t work in the other direction!

Has anybody an idea?

thank you!

schteff

[val46]

Hi,

what do you mean by "in the other direction"?

[schteff]

Oh sorry,

I have hot air in one region and I want to simulate the heattransfer through two solid regions into a water region.

My proplem is, that the solid regions hold the temperature of the beginning.

Do I have to modify the boundary settings?

I hope you understand the problem.

schteff

[schteff]

Hi,

to avoid other misstakes in my mesh, I tried to solve my problem in the multiRegionHeater tutorial.

My question is now:

Is it possibleto heat up the bottom-air-region and simulate the heattransfer through the solid-regions into the topair-region?
(without heating the heater-region)

I tried it, but the solid-region hold theit temperatures! (1000s simulated Time)

thanks


schteff

[val46]

Hi,

Is it possible to heat up the bottom-air-region and simulate the heattransfer through the solid-regions into the topair-region?
(without heating the heater-region)

Yes, it is possible. I just tried it and it worked. (I did it the other way around but i think this makes no difference.)
I heated the solids (300K) with the topair fluid (600K at minX). After 1000s i got a max Temperature of the bottomAir domain of 309 K

Not sure if these values are totally physically correct (especially because the mesh is very coarse). But the solution tends in the right direction

Regards,
Toni

EDIT: Oh, by the way, I tried it with chtMultiRegionSimpleFoam. But I think it shouldn't make any difference.

[schteff]

thank you,

yes it works !

My thermophysical properties were the problem!!!

Don´t know why! because I just copied from the tutorial...

with sutherlandTransport it works a bit better!