Reply To: Adding “SMAGORINSKY” model in Cylinder2D.
I kindly suggest that you check out our user guide (PDF) (esp. chapter 10) for a basic introduction into how OpenLB cases are commonly structured.
The relevant part in your case are the calls to defineDynamics and setParameters. The code excerpt you posted is nozzle3d-case-specific (and also from an older release, I suggest you switch to the most recent 1.7).