Reply To: Editing The Script
The laminar/cavity2d case doesn’t use Smagorinsky LES. You could add it by changing the bulk dynamics type and setting the collision::LES::Smagorinsky parameter (see e.g. examples/turbulence for reference).
The example is parameterized for Re=1000 by default and compares to matching literature values. I assume you are confused by the definition of vel_ghia_RE100 in 195: This is only so you can quickly switch to the Re=100 case reference values.