| DominikMuetter |
March 31, 2021 08:28 |
DILUBiCGStab Solving for Pressure always zero
4 Attachment(s)
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 stirrerı, 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:D.
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).:confused: I have the feeling there is a very simple but stupid mistake in my setup.
Code:
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 |
