Forced convective evaporation

sreeyuth · July 9, 2014, 12:13

Hello everyone!

Allow me to get straight to the point. I have two domains on top of each other. The top domain has air flow in it. The bottom domain is a solid which has pores open to the domain above (it is a mesh obtained directly from CT scans). But since some of the pores run across the entire height of the bottom domain, we have air penetration in the bottom domain too. Up to now, I have managed to simulate this much with simpleFoam.

Now I want to introduce water into the solid domain and then try to analyze how the solid dries due to the air flow above (forced convective evaporation). I am not specifically interested in tracking the waterfront. My parameters of interest would be the heat and mass fluxes at the air/solid interface.

Can anyone please suggest which solvers to combine, if any? At the moment, what comes to my mind is simpleFoam+conjugateHeatFoam+interPhaseChangeFoam.

matejfor · July 10, 2014, 02:34

Hi,
interPhaseChangeFoam seems to be good start.
You may look here http://www.tfd.chalmers.se/~hani/kur...ChangeFoam.pdf not to reinvent the weel.

You will probably also need to tweak the liquid in the porous region modelling.

matej

terry88 · February 16, 2018, 10:37

Hi everyone,
I'm trying to solve a similar problem. I am modeling the pipeline drying with dry air, there is a water pool with height of 20 mm in the lower part of the pipe, and I want to simulate the evaporation due to the air forced convection.

Any suggestions?
Thanks,
Alessio

July 9, 2014, 12:13	Forced convective evaporation	#1
sreeyuth New Member Sreeyuth Join Date: Jul 2014 Posts: 10 Rep Power: 11	Hello everyone! Allow me to get straight to the point. I have two domains on top of each other. The top domain has air flow in it. The bottom domain is a solid which has pores open to the domain above (it is a mesh obtained directly from CT scans). But since some of the pores run across the entire height of the bottom domain, we have air penetration in the bottom domain too. Up to now, I have managed to simulate this much with simpleFoam. Now I want to introduce water into the solid domain and then try to analyze how the solid dries due to the air flow above (forced convective evaporation). I am not specifically interested in tracking the waterfront. My parameters of interest would be the heat and mass fluxes at the air/solid interface. Can anyone please suggest which solvers to combine, if any? At the moment, what comes to my mind is simpleFoam+conjugateHeatFoam+interPhaseChangeFoam.

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July 10, 2014, 02:34		#2
matejfor Senior Member matej forman Join Date: Mar 2009 Location: Brno, Czech Republic Posts: 182 Rep Power: 17	Hi, interPhaseChangeFoam seems to be good start. You may look here http://www.tfd.chalmers.se/~hani/kur...ChangeFoam.pdf not to reinvent the weel. You will probably also need to tweak the liquid in the porous region modelling. matej

February 16, 2018, 10:37		#3
terry88 New Member Enrico Join Date: Oct 2015 Location: Italy Posts: 4 Rep Power: 10	Hi everyone, I'm trying to solve a similar problem. I am modeling the pipeline drying with dry air, there is a water pool with height of 20 mm in the lower part of the pipe, and I want to simulate the evaporation due to the air forced convection. Any suggestions? Thanks, Alessio