Improving convergence ?
 

Hello

I find that the convergence for my problem is slow. Here are the residuals :

http://yfrog.com/0lresidualsp

My problems is set up like this :

Fluid = Air

Solver :
Not changed anything

Viscous :
Model = K epsilon realisable (No factors changed compared to standard)
Wall treatment : Enhanced since I want to resolve the boundary layer (I've check, max y+ = 1.4)

Boundary Conditions :
Inlet : Velocity : 7m/s
Outlet : Pressure : 0

Solve -> Control -> Solution
Changed the discretization like this :
Pressure : standard
Momentum : second
turbulent blabla : first
Turbulent blabla : first

Residuals :
Changed the absolute criteria to 1e-06

Thanks for your help, I can show you the mesh if it's needed

Your convergence isn't "slow". From my side your convergence is good.
You may try to change your URF, but it is just tunning in your case.
I give you a tipp: don't look just at you residuals for checking convergence. I would monitor a variable which is in your interest (for instance pressure at your inlet, or force on a body). Convergence occures once you get a stable monitor