[dhopeshwar]

A simulation set up and also the tutorial case of dam break runs well without the use of dynamic mesh (adaptive mesh refinement) using interFoam solver in openFOAM version 7. However, when I use the dynamic meshing, it shows the error as follows :
The flux mapping table is used to recreate the flux on newly created faces.
Either add the entry if it is a flux or use (alphaPhi0.water none) to suppress this warning.
Selected 72 split points out of a possible 28314.
Unrefined from 238469 to 237965 cells.
--> FOAM Warning :
From function Foam::autoPtr<Foam::mapPolyMesh> Foam::dynamicRefineFvMesh::unrefine(const labelList&)
in file dynamicRefineFvMesh/dynamicRefineFvMesh.C at line 535
Cannot find surfaceScalarField alphaPhi0.water in user-provided flux mapping table
5
(
flux(alpha.liquid) none
rhoPhi none
phi none
ghf none
nHatf none
)
The flux mapping table is used to recreate the flux on newly created faces.
Either add the entry if it is a flux or use (alphaPhi0.water none) to suppress this warning.
DICPCG: Solving for pcorr, Initial residual = 1, Final residual = 9.65073e-06, No Iterations 388
time step continuity errors : sum local = 7.32319e-10, global = -5.63649e-12, cumulative = 0.000381052
smoothSolver: Solving for alpha.water, Initial residual = 0.000548352, Final residual = 2.81463e-09, No Iterations 2
Phase-1 volume fraction = 0.130052 Min(alpha.water) = -2.14709e-08 Max(alpha.water) = 1
MULES: Correcting alpha.water
MULES: Correcting alpha.water
Phase-1 volume fraction = 0.130052 Min(alpha.water) = -1.028e-05 Max(alpha.water) = 1
DICPCG: Solving for p_rgh, Initial residual = 0.0342204, Final residual = 0.000964364, No Iterations 3
#0 Foam::error:rintStack(Foam::Ostream&) at ??:?
#1 Foam::sigFpe::sigHandler(int) at ??:?
#2 ? in "/lib/x86_64-linux-gnu/libc.so.6"
#3 ? at tensorField.C:?
#4 ? in "/home/sadhu/OpenFOAM/sadhu-7/platforms/linux64GccDPInt32Opt/bin/interFoam"
#5 ? in "/home/sadhu/OpenFOAM/sadhu-7/platforms/linux64GccDPInt32Opt/bin/interFoam"
#6 ? in "/home/sadhu/OpenFOAM/sadhu-7/platforms/linux64GccDPInt32Opt/bin/interFoam"
#7 __libc_start_main in "/lib/x86_64-linux-gnu/libc.so.6"
#8 ? in "/home/sadhu/OpenFOAM/sadhu-7/platforms/linux64GccDPInt32Opt/bin/interFoam"

These lines are coming after time t=0.312606 sec in dam break case such that after this time the simulations terminates. For a different case (mine) , the same error pops up in the terminal at the start of the simulation itself. I have attached my dynamicmeshDict with these informations. How to eliminate these errors

[amirhosseintaran]

Hi Saurabh,

You should put alphaPhi0.water in correctFluxes within your dictionary.

Bests,

[dhopeshwar]

I have added the suggestion but still the error is popping up. Probably it is an error related to floating point exception or might be with pressure correction solver but I am not sure:

Courant Number mean: 0.00313718 max: 0.051472
Interface Courant Number mean: 4.24563e-05 max: 0.0434253
deltaT = 0.0019075
Time = 0.00612753

Selected 80 cells for refinement out of 2268.
Refined from 2268 to 2828 cells.
Selected 0 split points out of a possible 80.
DICPCG: Solving for pcorr, Initial residual = 1, Final residual = 9.94904e-06, No Iterations 77
time step continuity errors : sum local = 4.365e-09, global = -2.41333e-10, cumulative = -1.17136e-05
smoothSolver: Solving for alpha.water, Initial residual = 0.000204433, Final residual = 1.96922e-10, No Iterations 2
Phase-1 volume fraction = 0.130194 Min(alpha.water) = 0 Max(alpha.water) = 1
MULES: Correcting alpha.water
MULES: Correcting alpha.water
Phase-1 volume fraction = 0.130194 Min(alpha.water) = -8.34425e-14 Max(alpha.water) = 1
DICPCG: Solving for p_rgh, Initial residual = 0.00686432, Final residual = 0.000238204, No Iterations 2
[2] #0 Foam::error:rintStack(Foam::Ostream&) at ??:?
[2] #1 Foam::sigFpe::sigHandler(int) at ??:?
[2] #2 ? in "/lib/x86_64-linux-gnu/libc.so.6"
[2] #3 ? at tensorField.C:?
[2] #4 ? in "/home/sadhu/OpenFOAM/sadhu-7/platforms/linux64GccDPInt32Opt/bin/interFoam"
[2] #5 ? in "/home/sadhu/OpenFOAM/sadhu-7/platforms/linux64GccDPInt32Opt/bin/interFoam"
[2] #6 ? in "/home/sadhu/OpenFOAM/sadhu-7/platforms/linux64GccDPInt32Opt/bin/interFoam"
[2] #7 __libc_start_main in "/lib/x86_64-linux-gnu/libc.so.6"
[2] #8 ? in "/home/sadhu/OpenFOAM/sadhu-7/platforms/linux64GccDPInt32Opt/bin/interFoam"
[sadhu-Precision-Tower-7810:14900] *** Process received signal ***
[sadhu-Precision-Tower-7810:14900] Signal: Floating point exception (8)
[sadhu-Precision-Tower-7810:14900] Signal code: (-6)
[sadhu-Precision-Tower-7810:14900] Failing at address: 0x3e800003a34
[sadhu-Precision-Tower-7810:14900] [ 0] /lib/x86_64-linux-gnu/libc.so.6(+0x3ef10)[0x7fb925a9ef10]
[sadhu-Precision-Tower-7810:14900] [ 1] /lib/x86_64-linux-gnu/libc.so.6(gsignal+0xc7)[0x7fb925a9ee87]
[sadhu-Precision-Tower-7810:14900] [ 2] /lib/x86_64-linux-gnu/libc.so.6(+0x3ef10)[0x7fb925a9ef10]
[sadhu-Precision-Tower-7810:14900] [ 3] /opt/openfoam7/platforms/linux64GccDPInt32Opt/lib/libOpenFOAM.so(+0x7215d0)[0x7fb9270b55d0]
[sadhu-Precision-Tower-7810:14900] [ 4] interFoam(+0xe4f85)[0x556b88599f85]
[sadhu-Precision-Tower-7810:14900] [ 5] interFoam(+0xe56e9)[0x556b8859a6e9]
[sadhu-Precision-Tower-7810:14900] [ 6] interFoam(+0x49a55)[0x556b884fea55]
[sadhu-Precision-Tower-7810:14900] [ 7] /lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xe7)[0x7fb925a81c87]
[sadhu-Precision-Tower-7810:14900] [ 8] interFoam(+0x5102a)[0x556b8850602a]
[sadhu-Precision-Tower-7810:14900] *** End of error message ***
--------------------------------------------------------------------------
mpirun noticed that process rank 2 with PID 0 on node sadhu-Precision-Tower-7810 exited on signal 8 (Floating point exception).

The above error is coming in the tutorial case of dam break, openFoam 7 (interFoam solver)