Andrea_85 |
August 30, 2013 03:15 |
Hi Bruno,
thanks for reply.
This is my checkMesh:
Code:
Time = 0
Mesh stats
points: 104401
faces: 298784
internal faces: 284896
cells: 97280
boundary patches: 7
point zones: 0
face zones: 0
cell zones: 0
Overall number of cells of each type:
hexahedra: 97280
prisms: 0
wedges: 0
pyramids: 0
tet wedges: 0
tetrahedra: 0
polyhedra: 0
Checking topology...
Boundary definition OK.
Cell to face addressing OK.
Point usage OK.
Upper triangular ordering OK.
Face vertices OK.
Topological cell zip-up check OK.
Face-face connectivity OK.
Number of regions: 1 (OK).
Checking patch topology for multiply connected surfaces ...
Patch Faces Points Surface topology Bounding box
entrata 384 421 ok (non-closed singly connected) (-0.0005 -0.0005 0.003) (0 0 0.003)
uscita 1024 1081 ok (non-closed singly connected) (-0.001 -0.001 0) (0 0 0)
symmetry1 4000 4161 ok (non-closed singly connected) (0 -0.001 0) (0 0 0.003)
symmetry2 4000 4161 ok (non-closed singly connected) (-0.001 0 0) (0 0 0.003)
leftThroat 1280 1353 ok (non-closed singly connected) (-0.0005 -0.0005 0.002) (0 0 0.003)
fixedWall 640 693 ok (non-closed singly connected) (-0.001 -0.001 0.002) (0 0 0.002)
leftWall 2560 2673 ok (non-closed singly connected) (-0.001 -0.001 0) (0 0 0.002)
Checking geometry...
Overall domain bounding box (-0.001 -0.001 0) (0 0 0.003)
Mesh (non-empty, non-wedge) directions (1 1 1)
Mesh (non-empty) directions (1 1 1)
Boundary openness (2.25628e-14 1.97521e-14 -1.10709e-17) OK.
Max cell openness = 3.31693e-16 OK.
Max aspect ratio = 2.6019 OK.
Minumum face area = 1.81236e-10. Maximum face area = 1.27538e-09. Face area magnitudes OK.
Min volume = 4.51112e-15. Max volume = 3.19841e-14. Total volume = 1.76644e-09. Cell volumes OK.
Mesh non-orthogonality Max: 39.4033 average: 9.77926
Non-orthogonality check OK.
Face pyramids OK.
Max skewness = 0.497801 OK.
Coupled point location match (average 0) OK.
Face tets OK.
Min/max edge length = 1.17847e-05 4.97295e-05 OK.
All angles in faces OK.
Face flatness (1 = flat, 0 = butterfly) : average = 1 min = 0.999972
All face flatness OK.
Cell determinant (wellposedness) : minimum: 0.773735 average: 6.60922
Cell determinant check OK.
Concave cell check OK.
Mesh OK.
I am using dynamic mesh refinement during the simulation, this is dynamicMeshDict
Code:
dynamicFvMesh dynamicRefineFvMesh;
dynamicRefineFvMeshCoeffs
{
// How often to refine
refineInterval 1;
// Field to be refinement on
field alpha1;
// Refine field inbetween lower..upper
lowerRefineLevel 0.001;
upperRefineLevel 0.999;
// If value < unrefineLevel unrefine
unrefineLevel 10;
// Have slower than 2:1 refinement
nBufferLayers 1;
// Refine cells only up to maxRefinement levels
maxRefinement 2;
// Stop refinement if maxCells reached
maxCells 500000;
// Flux field and corresponding velocity field. Fluxes on changed
// faces get recalculated by interpolating the velocity. Use 'none'
// on surfaceScalarFields that do not need to be reinterpolated.
correctFluxes
(
(phi Urel)
(phiAbs U)
(phiAbs_0 U_0)
(nHatf none)
(rho*phi none)
(ghf none)
);
// Write the refinement level as a volScalarField
dumpLevel true;
}
I decomposed my domain using "simple" method with 25 processors.
The simulation is running with no problems, anyway this is the last time step avaible (it is still running...)
Code:
Interface Courant Number mean: 8.36843e-05 max: 0.195704
Courant Number mean: 0.00127654 max: 0.195704
deltaT = 2.78537e-06
Time = 0.0819053
Selected 23 cells for refinement out of 256446.
Refined from 256446 to 256607 cells.
Selected 12 split points out of a possible 19743.
Unrefined from 256607 to 256523 cells.
Execution time for mesh.update() = 3.09 s
time step continuity errors : sum local = 8.80414e-07, global = -7.63552e-13, cumulative = -0.00120186
DICPCG: Solving for pcorr, Initial residual = 1, Final residual = 9.70993e-11, No Iterations 296
DICPCG: Solving for pcorr, Initial residual = 0.130284, Final residual = 9.99832e-11, No Iterations 276
time step continuity errors : sum local = 2.04296e-16, global = -2.44056e-18, cumulative = -0.00120186
MULES: Solving for alpha1
Liquid phase volume fraction = 0.2519 Min(alpha1) = -6.34441e-39 Max(alpha1) = 1
MULES: Solving for alpha1
Liquid phase volume fraction = 0.251901 Min(alpha1) = -2.06716e-38 Max(alpha1) = 1
MULES: Solving for alpha1
Liquid phase volume fraction = 0.251902 Min(alpha1) = -1.78455e-38 Max(alpha1) = 1
Grade of smoothing = 0
DICPCG: Solving for p_rgh, Initial residual = 0.0337595, Final residual = 0.00111675, No Iterations 2
DICPCG: Solving for p_rgh, Initial residual = 0.00768464, Final residual = 0.000370404, No Iterations 6
time step continuity errors : sum local = 9.20215e-08, global = -9.74533e-12, cumulative = -0.00120186
DICPCG: Solving for p_rgh, Initial residual = 0.00444963, Final residual = 0.000193371, No Iterations 5
DICPCG: Solving for p_rgh, Initial residual = 0.0014235, Final residual = 6.89872e-05, No Iterations 9
time step continuity errors : sum local = 1.70923e-08, global = -3.68939e-11, cumulative = -0.00120186
DICPCG: Solving for p_rgh, Initial residual = 0.000982005, Final residual = 4.81117e-05, No Iterations 18
DICPCG: Solving for p_rgh, Initial residual = 0.000333293, Final residual = 9.56105e-08, No Iterations 154
time step continuity errors : sum local = 2.36867e-11, global = -7.66585e-13, cumulative = -0.00120186
ExecutionTime = 150131 s ClockTime = 150469 s
Maybe i can try with some newer version of OF, to see if the problem disappears.
Best
Andrea
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