[rcastilla]

Hi,

I have recently seen a weird behaviour of simpleFoam solver. I shows only information for p equation residuals, but not for velocity:


...
Time = 8e-07

GAMG: Solving for p, Initial residual = 6.50381e-05, Final residual = 6.347283e-09, No Iterations 76
GAMG: Solving for p, Initial residual = 0.000211505, Final residual = 1.97172e-08, No Iterations 37
GAMG: Solving for p, Initial residual = 9.692022e-05, Final residual = 8.045532e-09, No Iterations 24
GAMG: Solving for p, Initial residual = 2.10692e-05, Final residual = 2.085201e-09, No Iterations 19
time step continuity errors : sum local = 4.167724e-11, global = 1.860175e-11, cumulative = 1.024744e-10
ExecutionTime = 31.94 s ClockTime = 32 s

Time = 9e-07

GAMG: Solving for p, Initial residual = 5.70272e-05, Final residual = 5.510404e-09, No Iterations 74
GAMG: Solving for p, Initial residual = 0.0001498911, Final residual = 1.306778e-08, No Iterations 37
GAMG: Solving for p, Initial residual = 6.914938e-05, Final residual = 5.904203e-09, No Iterations 24
GAMG: Solving for p, Initial residual = 1.56225e-05, Final residual = 1.282677e-09, No Iterations 21
time step continuity errors : sum local = 2.563705e-11, global = 1.243251e-11, cumulative = 1.149069e-10
ExecutionTime = 38.88 s ClockTime = 39 s

Time = 1e-06
....

Any information of the reason of that?

Best regards

Robert

[wyldckat]

Quick answer: "system/fvSolution", inside SIMPLE, you have "momentumPredictor" set to "no".

edit: I've added it to the FAQ: http://openfoamwiki.net/index.php/FA...y_equations.3F