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-   -   Scaling mesh, time step continuity errors. (https://www.cfd-online.com/Forums/openfoam-solving/248183-scaling-mesh-time-step-continuity-errors.html)

joco March 1, 2023 08:50

Scaling mesh, time step continuity errors.
 
Hi

I made a simulation with a background mesh of 2m x 0.5m x 0.5 m, based on the libraries "make fish swim". It seem to work, so far.
Since I intended to have a 20m long mesh, I scale the mesh: transformPoints '(10 10 10)', but the simulation stops after a few seconds with the message:

Code:

GAMG:  Solving for pcorr, Initial residual = 1, Final residual = 9.54474e-07, No Iterations 19
time step continuity errors : sum local = 1.80262e-10, global = 1.86461e-11, cumulative = 1.86461e-11
PIMPLE: iteration 1
smoothSolver:  Solving for Ux, Initial residual = 1, Final residual = 0.0753653, No Iterations 2
smoothSolver:  Solving for Uy, Initial residual = 1, Final residual = 0.0399224, No Iterations 2
smoothSolver:  Solving for Uz, Initial residual = 1, Final residual = 0.0908901, No Iterations 2

Does anybody have any idea how to fix this?
thanks in advance
/joc


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