[DominikMuetter]

Good day Ladies and Gentlemen,


I would kindly like to ask for your help with an openfoam simulation for my bachelor thesis. I am trying to simulate an oloid stirrer¹, using the overPimpleDyMFoam solver with a tabulated six-degree-of-freedom motion. Please be lenient with any stupid mistakes in my setup, I am using Openfoam for roughly half a year now, and CFD in general for only a little bit longer.

More detailed description:
The case setup is derived from the examples for the overPimpleDyMFoam and pimpleFoam solvers (although I have consulted numerous other sources). The spherical refinement zone together with the oloid is the moving overset part (please note attached images). I have no in- or outflow and no free surface.

Problem:
Openfoam calculates the flow field U for the oloid, but there is no pressure gradient, and the impulse does not propagate through the whole fluid (as you can see in the image). I have the feeling there is a very simple but stupid mistake in my setup.

Overset analysis : nCells : 2281489 
     calculated   : 343000 
    interpolated : 0 (interpolated from local:0  mixed local/remote:0  remote:0) 
    hole         : 1938489 

Overset analysis : nCells : 2281489 
    calculated   : 343000 
    interpolated : 0 (interpolated from local:0  mixed local/remote:0  remote:0) 
    hole         : 1938489 

DICPCG:  Solving for pcorr, Initial residual = 1, Final residual = 0.00833108, No Iterations 115 
PIMPLE: iteration 1 
DILUPBiCGStab:  Solving for p, Initial residual = 0, Final residual = 0, No Iterations 0 
time step continuity errors : sum local = 0, global = 0, cumulative = 0 
DILUPBiCGStab:  Solving for p, Initial residual = 0, Final residual = 0, No Iterations 0 
time step continuity errors : sum local = 0, global = 0, cumulative = 0 
DICPCG:  Solving for pcorr, Initial residual = 1, Final residual = 0.00833108, No Iterations 115 
PIMPLE: iteration 1 
DILUPBiCGStab:  Solving for p, Initial residual = 0, Final residual = 0, No Iterations 0 
time step continuity errors : sum local = 0, global = 0, cumulative = 0 
PIMPLE: iteration 2 
DILUPBiCGStab:  Solving for p, Initial residual = 0, Final residual = 0, No Iterations 0 
time step continuity errors : sum local = 0, global = 0, cumulative = 0 
DILUPBiCGStab:  Solving for p, Initial residual = 0, Final residual = 0, No Iterations 0 
DILUPBiCGStab:  Solving for p, Initial residual = 0, Final residual = 0, No Iterations 0 
time step continuity errors : sum local = 0, global = 0, cumulative = 0 
time step continuity errors : sum local = 0, global = 0, cumulative = 0 
DILUPBiCGStab:  Solving for p, Initial residual = 0, Final residual = 0, No Iterations 0 
DILUPBiCGStab:  Solving for p, Initial residual = 0, Final residual = 0, No Iterations 0 
time step continuity errors : sum local = 0, global = 0, cumulative = 0 
time step continuity errors : sum local = 0, global = 0, cumulative = 0 
PIMPLE: iteration 2 
DILUPBiCGStab:  Solving for p, Initial residual = 0, Final residual = 0, No Iterations 0 
time step continuity errors : sum local = 0, global = 0, cumulative = 0 
DILUPBiCGStab:  Solving for p, Initial residual = 0, Final residual = 0, No Iterations 0 
time step continuity errors : sum local = 0, global = 0, cumulative = 0 
smoothSolver:  Solving for epsilon, Initial residual = 0.000967702, Final residual = 3.061e-07, No Iterations 5 
DILUPBiCGStab:  Solving for p, Initial residual = 0, Final residual = 0, No Iterations 0 
time step continuity errors : sum local = 0, global = 0, cumulative = 0 
smoothSolver:  Solving for k, Initial residual = 0.0570797, Final residual = 5.73559e-07, No Iterations 9 
ExecutionTime = 1373.21 s  ClockTime = 1377 s 

Courant Number mean: 0 max: 0 
deltaT = 0.0159594 
Time = 0.0987593 

DILUPBiCGStab:  Solving for p, Initial residual = 0, Final residual = 0, No Iterations 0 
time step continuity errors : sum local = 0, global = 0, cumulative = 0 
smoothSolver:  Solving for epsilon, Initial residual = 0.000967702, Final residual = 3.061e-07, No Iterations 5 
smoothSolver:  Solving for k, Initial residual = 0.0570797, Final residual = 5.73559e-07, No Iterations 9 
ExecutionTime = 1375.99 s  ClockTime = 1381 s 

Courant Number mean: 0 max: 0 
deltaT = 0.0159594 
 Time = 0.0987593

I created this case with openfoam 2006/2012. I attached all dictionaries (except for the overset), because I have no idea where the error may lie. Any pointers would be highly appreciated.

I wish everyone a pleasant Wednesday,
Dominik Mütter



1: Looks like this
https://www.youtube.com/watch?v=r-lNe9AUwOg
https://www.youtube.com/watch?v=0xNWLr1ILJE


Edit: upload of updated dictionaries, added console log

[tomi_foamer]

I have the same problem, could you find a solution for it?