Divergence detected AMG solver error
 

hi all friends me a student n m using Spar-Almars model for computing flow on an airfoil NACA 2415 at mach 0.6 angle of attack 4degree during ittration the solver show error tha divergence detected AMG solver error in line 814. please help me to get out of this problem.thnx:)

Hi Nawaz,

You can reduce under-relaxation factors a little for the turbulence parameters.

After convergence begins, you can increase them again according to circumstances.

Usually it wont help change the under-relaxation factors. Better check the BCS carefully.