How to resolve "Invalid wall function specification" errors?


#1

In my project I’m trying to simulate water flowing over a cylinder. The project can be found here:

https://www.simscale.com/workbench/?pid=474400676465172817

I ran a simulation job titled “one tenth meters per second” and it failed with an IO Error. Looking at the solver log I found this error message:

[4] --> FOAM FATAL ERROR:
[4] Invalid wall function specification
Patch type for patch boundingBox1 must be wall

How can this type of error be resolved?


#2

Hi @tryabin, to answer your question:

It seems that you have discovered a bug with our wall function (ie the LES analysis type assumes the bounding box to be patch instead of wall) :confounded: We will have to take a deeper look into this.

The simulation works if I change just one condition - Wall treatment to “Zero gradient” for the ‘Walls’ boundary condition.

Best,
Anna


#3

Thanks, that fixed the problem and made the simulation run complete without errors.


#4

Great :smile: