I have looked over this simulation and tried everything I can think of. I am trying to simulate airflow from a duct with linear slot in a room without ceilings. The duct is above three perforated panels that I am modeling as porous media. The goal of the simulation is to ensure the air will mix properly in the room with the panels installed and that condensation will not form on the surface of the panels. The room will be maintained at 75F and 55% RH with 55F 85% RH inlet air. The heat sources are lights, people, external wall, and roof. I obtained the heat load data from a separate program IES VE.
My issue is every time I run the simulation the room temperature goes to 500F+. I do not know what I am doing wrong. I have tried deleting the solid bodies that represent the people and lights and just have heat flux boundary conditions on the fluid volume walls, I have tried leaving the solid bodies in and making the power sources and everything comes out the same result. The heat loads do not seem unreasonable and the airflow should be plenty to cool the room. I was expecting the room to be over cooled if anything.
Any help would be greatly appreciated!!
Oops here is the project.
Hi @JMiller123, thanks for posting on the forum and welcome to the SimScale Community 
It’s tough to spot where the problem exactly is since your simulation has many additional complexities in the setup, namely:
The first advice I’d give you would be to do a first analysis with all of these global settings disabled and get that run converged before moving forward to more complex scenarios. Also, is there a specific reason why you feel it necessary to enable the “Compressible” toggle? I don’t see large temperature deltas on your simulation to justify enabling it (keep in mind natural convection effects are still modelled even with this option disabled).
As a last pointer, keep in mind that, if a wall is not assigned a particular boundary condition, it will be set automatically as a no-slip adiabatic wall.
Cheers
Igor
Thank you, I will give that a shot and start turning things off to narrow down the issue. I have the compressible model on because one of the key metrics I would like to monitor is the humidity levels in the room to check for the possibility of condensation. I think it would not let me have humidity without compressible.
You’re correct, apologies for overlooking this. At any rate, please try running the sim w/o these options then build on complexity as you go.
