Porous Media - Fluid Interface (with Air as the single/only fluid) Issues
I am hoping that someone can help me understand how to set up a simulation with a porous - fluid "interface".
My simulation is relatively simplistic. Air enters the bottom of the domain through a velocity inlet, moves through a porous zone, exits the porous zone and enters a "free" air space (i.e. at a porous-fluid "interface"), and the exits the domain at a 0 pa gauge pressure outlet. The image below tries to illustrate the gist of this simulation. Please note that the blue section in this image is the "free" air space and the red section is the porous zone. Also, the temperature difference between these regions was set purposefully.
My question is related to the "interface" between the LTE porous zone and the air fluid zone above it. This "interface" is currently set as an interior zone. From my understanding, this is the correct condition for this "interface". I would simply like for the air to flow out of the porous zone and into the air zone.
However, when I run this simulation I keep getting the following errors:
*Error: < (less-than): invalid argument : wrong type [not a number]
Error Object: inf.*
*Error: WorkBench Error: Could not handle event: SolutionStatusUpdate
Error Object: #f*
Please note that I use a UDF to initialize the temperature field at the start of this simulation and also to use a custom time setting/time advancement method. However, I am confident that this UDF is error free and does not influence the occurrence of this error.
Also, the purpose of this simulation is to "measure" the volume-averaged temperature of the "free" air space as the higher temperature porous zone cools convectively due to the injected air.
If someone could help get my on the right track/let me know what I am missing, I would appreciate it.
If anything is unclear from my problem description, please let me know, I am happy to clarify.