Hello all, several questions about the navier stokes solver. couldnt find answers in the user’s guide

- What state equation is employed in solution of navier-stokes? Is it the ideal gas equation? What if I want to solve a problem with a different state equation?
- What units (if any) should the viscosity in “Navier-stokes” solver given in? Is it unitless? If so- what is it scaled by? What confuses me is that in the Couette flow example we were given a viscocity of ~0.4, which is huge in SI units.
- If I want to solve the navier stokes equation with the Sutherland’s law, which parameters should I give? is the given “mu” parameter now the reference viscosity, rather than the constant viscocity of the fluid?
- where would I find the answer to such questions? is this forum the only place? is there a more elaborate user’s guide then the one in the website?