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#1 |
New Member
Christophe
Join Date: Nov 2016
Posts: 4
Rep Power: 9 ![]() |
Dear foamers,
I am trying to run a case with interfoam, derived from the waterChannel tutorial. The geometry is different, as the mesh (snappyhexmesh, checkMesh OK) and initial conditions (see image). Boundary conditions are the same as the tutorial, so are controlDict (except the added function #includeFunc residuals), fvScheme and fvSolution. I run openfoam 7 on ubuntu 20.04 64 bit. The calculation starts and run smoothly then suddenly crashes without blowing up. What I mean is that everything seems fine (residuals, inlet and outlet fluxes, max velocity) when the crash happens. Here are the last three iterations and the error message : Code:
smoothSolver: Solving for alpha.water, Initial residual = 0.00119021, Final residual = 7.19883e-09, No Iterations 3 Phase-1 volume fraction = 0.242722 Min(alpha.water) = -4.16565e-09 Max(alpha.water) = 1.00001 MULES: Correcting alpha.water Phase-1 volume fraction = 0.242722 Min(alpha.water) = -0.00076294 Max(alpha.water) = 1.00039 GAMG: Solving for p_rgh, Initial residual = 0.0168586, Final residual = 0.000120603, No Iterations 2 time step continuity errors : sum local = 0.000809142, global = 1.39209e-06, cumulative = -9.96522e-06 GAMG: Solving for p_rgh, Initial residual = 0.000345433, Final residual = 3.85913e-09, No Iterations 22 time step continuity errors : sum local = 2.57429e-08, global = -3.81059e-10, cumulative = -9.9656e-06 smoothSolver: Solving for omega, Initial residual = 0.00707939, Final residual = 0.000143963, No Iterations 1 smoothSolver: Solving for k, Initial residual = 0.0212891, Final residual = 0.000628071, No Iterations 1 ExecutionTime = 230.59 s ClockTime = 231 s surfaceFieldValue inletFlux write: sum(inlet) of rhoPhi = -100 surfaceFieldValue outletFlux write: sum(outlet) of rhoPhi = 216.906 surfaceFieldValue atmFlux write: sum(atm) of rhoPhi = -0.439954 Courant Number mean: 0.173153 max: 6.19933 Interface Courant Number mean: 0.011299 max: 2.24993 deltaT = 0.00732468 Time = 0.495321 smoothSolver: Solving for alpha.water, Initial residual = 0.00116221, Final residual = 6.20313e-09, No Iterations 3 Phase-1 volume fraction = 0.242708 Min(alpha.water) = -4.09478e-09 Max(alpha.water) = 1.00001 MULES: Correcting alpha.water Phase-1 volume fraction = 0.242708 Min(alpha.water) = -0.000681019 Max(alpha.water) = 1.00036 GAMG: Solving for p_rgh, Initial residual = 0.0164629, Final residual = 0.000117117, No Iterations 2 time step continuity errors : sum local = 0.000745443, global = 3.72879e-07, cumulative = -9.59272e-06 GAMG: Solving for p_rgh, Initial residual = 0.000343821, Final residual = 4.91956e-09, No Iterations 22 time step continuity errors : sum local = 3.11446e-08, global = -3.32987e-09, cumulative = -9.59605e-06 smoothSolver: Solving for omega, Initial residual = 0.0067972, Final residual = 0.000129168, No Iterations 1 smoothSolver: Solving for k, Initial residual = 0.0202467, Final residual = 0.000561078, No Iterations 1 ExecutionTime = 234.09 s ClockTime = 234 s surfaceFieldValue inletFlux write: sum(inlet) of rhoPhi = -100 surfaceFieldValue outletFlux write: sum(outlet) of rhoPhi = 216.794 surfaceFieldValue atmFlux write: sum(atm) of rhoPhi = -0.439018 Courant Number mean: 0.168407 max: 6.11036 Interface Courant Number mean: 0.0110264 max: 2.17041 deltaT = 0.0071845 Time = 0.502505 smoothSolver: Solving for alpha.water, Initial residual = 0.00115311, Final residual = 5.75125e-09, No Iterations 3 Phase-1 volume fraction = 0.242695 Min(alpha.water) = -4.85068e-09 Max(alpha.water) = 1.00001 MULES: Correcting alpha.water Phase-1 volume fraction = 0.242695 Min(alpha.water) = -0.000757292 Max(alpha.water) = 1.00035 GAMG: Solving for p_rgh, Initial residual = 0.0161444, Final residual = 0.000116495, No Iterations 2 time step continuity errors : sum local = 0.000719951, global = 1.22603e-07, cumulative = -9.47345e-06 GAMG: Solving for p_rgh, Initial residual = 0.000345299, Final residual = 4.9922e-09, No Iterations 25 time step continuity errors : sum local = 3.06927e-08, global = -5.35778e-09, cumulative = -9.47881e-06 smoothSolver: Solving for omega, Initial residual = 0.00660857, Final residual = 0.000119694, No Iterations 1 smoothSolver: Solving for k, Initial residual = 0.0195878, Final residual = 0.000516912, No Iterations 1 ExecutionTime = 237.7 s ClockTime = 238 s surfaceFieldValue inletFlux write: sum(inlet) of rhoPhi = -100 surfaceFieldValue outletFlux write: sum(outlet) of rhoPhi = 216.687 surfaceFieldValue atmFlux write: sum(atm) of rhoPhi = -0.438183 Courant Number mean: 0.166024 max: 6.04775 Interface Courant Number mean: 0.0109053 max: 2.14029 deltaT = 0.00712757 Time = 0.509633 smoothSolver: Solving for alpha.water, Initial residual = 0.00115602, Final residual = 5.62226e-09, No Iterations 3 Phase-1 volume fraction = 0.242682 Min(alpha.water) = -4.83732e-09 Max(alpha.water) = 1.00001 MULES: Correcting alpha.water Phase-1 volume fraction = 0.242682 Min(alpha.water) = -0.000996971 Max(alpha.water) = 1.00032 GAMG: Solving for p_rgh, Initial residual = 0.0161208, Final residual = 0.000117379, No Iterations 2 time step continuity errors : sum local = 0.000718305, global = -1.23836e-07, cumulative = -9.60265e-06 #0 Foam::error::printStack(Foam::Ostream&) at ??:? #1 Foam::sigSegv::sigHandler(int) at ??:? #2 ? in "/lib/x86_64-linux-gnu/libc.so.6" #3 Foam::tmp<Foam::GeometricField<Foam::innerProduct<Foam::GeometricField<Foam::Vector<double>, Foam::fvsPatchField, Foam::surfaceMesh>::value_type, Foam::Vector<double> >::type, Foam::fvsPatchField, Foam::surfaceMesh> > Foam::surfaceInterpolationScheme<Foam::Vector<double> >::dotInterpolate<Foam::GeometricField<Foam::Vector<double>, Foam::fvsPatchField, Foam::surfaceMesh> >(Foam::GeometricField<Foam::Vector<double>, Foam::fvsPatchField, Foam::surfaceMesh> const&, Foam::GeometricField<Foam::Vector<double>, Foam::fvPatchField, Foam::volMesh> const&, Foam::tmp<Foam::GeometricField<double, Foam::fvsPatchField, Foam::surfaceMesh> > const&) at ??:? #4 Foam::fv::correctedSnGrad<double>::fullGradCorrection(Foam::GeometricField<double, Foam::fvPatchField, Foam::volMesh> const&) const at ??:? #5 Foam::fv::correctedSnGrad<double>::correction(Foam::GeometricField<double, Foam::fvPatchField, Foam::volMesh> const&) const at ??:? #6 Foam::fv::snGradScheme<double>::snGrad(Foam::GeometricField<double, Foam::fvPatchField, Foam::volMesh> const&) const at ??:? #7 Foam::tmp<Foam::GeometricField<double, Foam::fvsPatchField, Foam::surfaceMesh> > Foam::fvc::snGrad<double>(Foam::GeometricField<double, Foam::fvPatchField, Foam::volMesh> const&, Foam::word const&) in "/opt/openfoam7/platforms/linux64GccDPInt32Opt/bin/interFoam" #8 Foam::tmp<Foam::GeometricField<double, Foam::fvsPatchField, Foam::surfaceMesh> > Foam::fvc::snGrad<double>(Foam::GeometricField<double, Foam::fvPatchField, Foam::volMesh> const&) in "/opt/openfoam7/platforms/linux64GccDPInt32Opt/bin/interFoam" #9 Foam::interfaceProperties::surfaceTensionForce() const at ??:? #10 ? in "/opt/openfoam7/platforms/linux64GccDPInt32Opt/bin/interFoam" #11 __libc_start_main in "/lib/x86_64-linux-gnu/libc.so.6" #12 ? in "/opt/openfoam7/platforms/linux64GccDPInt32Opt/bin/interFoam" Segmentation fault (core dumped) The strangest thing to me is that the exact same simulation will crash at different timestep when run twice in a row. I must also mention the simulation is a single process. Running in parallel only seem to make the simulation crash earlier (first 3 timesteps). Help would be much appreciated. I can provide details of the case but as I mentioned, it is mostly the water channel tutorial. |
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#2 |
Senior Member
Herpes Free Engineer
Join Date: Sep 2019
Location: The Home Under The Ground with the Lost Boys
Posts: 931
Rep Power: 12 ![]() |
Hi,
- Is it possible for you to upload the problematic case? - Have you found any chance to try this case with OF6, or .com versions? May be the issue is just brand new.
__________________
The OpenFOAM community is the biggest contributor to OpenFOAM: User guide/Wiki-1/Wiki-2/Code guide/Code Wiki/Journal Nilsson/Guerrero/Holzinger/Holzmann/Nagy/Santos/Nozaki/Jasak/Primer Governance Bugs/Features: OpenFOAM (ESI-OpenCFD-Trademark) Bugs/Features: FOAM-Extend (Wikki-FSB) Bugs: OpenFOAM.org How to create a MWE New: Forkable OpenFOAM mirror |
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#3 |
New Member
Christophe
Join Date: Nov 2016
Posts: 4
Rep Power: 9 ![]() |
Hello HPE, thanks for your time.
I can upload the case, it's about 93 MB. Is there a specific way to do it on the forum or a link to a cloud file would be fine ? I haven't tried to run the case with OF6. I can try but I am not sure how to install OF6 since it's not in the standard openfoam repository. Sorry, I am new to this forum and not really proficient in linux. |
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#4 |
Senior Member
Herpes Free Engineer
Join Date: Sep 2019
Location: The Home Under The Ground with the Lost Boys
Posts: 931
Rep Power: 12 ![]() |
Hi,
- I don't think there is anything wrong with your simulation (OK, speculation so far - but the segmentation error is a good indicator that something is wrong with the code itself). - No worries, nobody learned Linux from day-1. I remember that I had been looking on how to open the terminal for roughly five days! ![]() - Installation of any OpenFOAM variant is more or less the same procedure, and you can install all OpenFOAM variants with all its versions at the same time. Have you tried this OF6 website? https://openfoam.org/download/6-ubuntu/ - I think the size of your simulation is 90MB due to the existence of polyMesh directory. Just delete it, we can create the mesh by executing `blockMesh` and `snappyHexMesh` if the relevant settings dictionaries exist for them under `system` directory. If you can upload those text files, I can run the case with different versions to see if the case blows up.
__________________
The OpenFOAM community is the biggest contributor to OpenFOAM: User guide/Wiki-1/Wiki-2/Code guide/Code Wiki/Journal Nilsson/Guerrero/Holzinger/Holzmann/Nagy/Santos/Nozaki/Jasak/Primer Governance Bugs/Features: OpenFOAM (ESI-OpenCFD-Trademark) Bugs/Features: FOAM-Extend (Wikki-FSB) Bugs: OpenFOAM.org How to create a MWE New: Forkable OpenFOAM mirror |
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#5 |
New Member
Christophe
Join Date: Nov 2016
Posts: 4
Rep Power: 9 ![]() |
Here is the interfoam case. There should be everything needed to mesh and run the case.
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#6 |
New Member
Christophe
Join Date: Nov 2016
Posts: 4
Rep Power: 9 ![]() |
I solved my problem running the interfoam case on another computer with ubuntu 18.04 and openfoam 7. No Sigsegv and I could also run it in parrallel.
I suppose the problem comes from ubuntu 20.04 or the other computer it is installed on. I don't see what could be wrong with the computer since it was a fresh install of ubuntu 20.04 and openfoam 7. I don't really know what to do with this conclusion. Maybe report it as a bug but I'm not sure how. If it does come from a version problem between ubuntu 20.04 and openfoam 7, it is quite problematic and should be address. |
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#7 |
Senior Member
Herpes Free Engineer
Join Date: Sep 2019
Location: The Home Under The Ground with the Lost Boys
Posts: 931
Rep Power: 12 ![]() |
I'm sorry for the delay for help from my side (I'm still busy). And thanks for your conclusions. You can issue a bug ticket in the Foundation bug tracker website, which you can find below among the links.
__________________
The OpenFOAM community is the biggest contributor to OpenFOAM: User guide/Wiki-1/Wiki-2/Code guide/Code Wiki/Journal Nilsson/Guerrero/Holzinger/Holzmann/Nagy/Santos/Nozaki/Jasak/Primer Governance Bugs/Features: OpenFOAM (ESI-OpenCFD-Trademark) Bugs/Features: FOAM-Extend (Wikki-FSB) Bugs: OpenFOAM.org How to create a MWE New: Forkable OpenFOAM mirror |
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Tags |
interfoam, sigsegv |
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