CFX convergence problem
 

Hi to all,
Am doing a simulation with more than 6000 holes in a screen.when am running the simulation with auto time scale residuals starts to oscillate at 10th iteration and never converge.But in physical time scale it runs smoothly up to (2e-4) and keeps on going flatly even 4 days too.changing the time scale won't help.can any one help me to resolve this