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residualControl with coupled solver

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Old   December 13, 2014, 12:37
Default residualControl with coupled solver
Florian Ries
Join Date: Feb 2014
Location: Darmstadt, Germany
Posts: 88
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itchy is on a distinguished road
Hi all,

using pimpleFoam with coupled solver (e.g PBiCCCG) and residualControl gives Pimple converged , but the solution is not convergent for all components of U. One example:

for residualControl U=1e-7;
I get converged case if only one component of U is smaller than 1e-7 like this

PHP Code:
DILUPBiCCCG:  Solving for UxInitial residual 1.87789e-10, Final residual 1.86835e-21No Iterations 4
:  Solving for UyInitial residual 5.59288e-06, Final residual 5.39998e-17No Iterations 4
:  Solving for UzInitial residual 0, Final residual 0No Iterations 4
:  Solving for pInitial residual 1.71586e-08, Final residual 9.36155e-11No Iterations 27
time step continuity errors 
sum local 4.03513e-13, global = -2.804e-14cumulative = -1.48317e-08
:  Solving for pInitial residual 3.66498e-09, Final residual 9.72055e-11No Iterations 16
time step continuity errors 
sum local 4.1898e-13, global = -2.71143e-14cumulative = -1.48317e-08
:  Solving for pInitial residual 4.1307e-10, Final residual 9.01502e-13No Iterations 79
time step continuity errors 
sum local 3.94018e-15, global = 1.01303e-17cumulative = -1.48317e-08
converged in 4 iterations 
So my question:
Is there a possibilty to do residual control for coupled solver in a proper way??? Or is everything fine and I miss smth.

kind regards
itchy is offline   Reply With Quote


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