Turbulence models
 

I have a doubt. When you have separation in the flux you have a zone where the velocity is 0 (far from the wall), so is the turbulent model working OK there? (I'm not next to the wall but the velocity is 0). If I use a model that doesn't predict well next to the wall like SSG, all the separation (even the zone far from the wall) will be not well predicted or only next to the wall?