- **OpenFOAM**
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- - **convergence in PISO loop of icoFoam**
(*https://www.cfd-online.com/Forums/openfoam/110103-convergence-piso-loop-icofoam.html*)

convergence in PISO loop of icoFoamHi FOAMERS
I am simulating a laminar double diffusive natural convection with phase change in OF. The solver is mainly based on icoFoam. AFter postprocessing the results, I see that in the two phase (solid/liquid) region I have flow into the wall, which indicates that my solution is not fully converged. The tolerance for linear solvers are 1e-5, and for the PISO loop parameters in the fvsolution I have set PISO { nCorrectors 2; nNonOrthogonalCorrectors 0; convergenceCriterion 1.0e-5; pRefCell 0; pRefValue 0; residualControl { p 1e-5; U 1e-5; // Add other variables here } }; Since I have flow into the wall, my residuals should be higher than the 1e-5 in the residualControl; and, as far as I can tell, I get no warning about this from the OF. So can anyone help me to figure out (1): why why does the OF gives me a solution which does not satisfy the residuals I have set? (2): Does specifying or not specifying the residualControl in the fvsolution has any effect on the simulation? |

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