[seav]

Hello I got this kind of error :

--> FOAM FATAL IO ERROR: 
wrong token type - expected Scalar, found on line 0 the word 'nan'

file: /home/jils/Dokumenty/mgr/mgr_projekt_dol/system/data.solverPerformance.p at line 0.

    From function operator>>(Istream&, Scalar&)
    in file lnInclude/Scalar.C at line 93.

FOAM exiting

And the question is how to solve it ? I had similiar problem with epsilon and change of BC helped, but here I am out of ideas.

I model flow with v=0.5m/s in rectangular channel with obstacles inside. Channel is 140x450x5 mm wide/long/high. I made control volumes before inlet and behind outlet to prevent compute errors.. And here errors started.

Check mesh is fine :

/*---------------------------------------------------------------------------*\
| =========                 |                                                 |
| \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
|  \\    /   O peration     | Version:  2.3.0                                 |
|   \\  /    A nd           | Web:      www.OpenFOAM.org                      |
|    \\/     M anipulation  |                                                 |
\*---------------------------------------------------------------------------*/
Build  : 2.3.0-f5222ca19ce6
Exec   : checkMesh
Date   : Aug 06 2014
Time   : 20:19:25
Host   : "ubuntuspace"
PID    : 8754
Case   : /home/jils/Dokumenty/mgr/mgr_projekt_dol
nProcs : 1
sigFpe : Enabling floating point exception trapping (FOAM_SIGFPE).
fileModificationChecking : Monitoring run-time modified files using timeStampMaster
allowSystemOperations : Disallowing user-supplied system call operations

// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
Create time

Create polyMesh for time = 0

Time = 0

Mesh stats
    points:           4154652
    faces:            11667836
    internal faces:   10875874
    cells:            3757285
    faces per cell:   6
    boundary patches: 5
    point zones:      0
    face zones:       0
    cell zones:       140

Overall number of cells of each type:
    hexahedra:     3757285
    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.
    Number of regions: 1 (OK).

Checking patch topology for multiply connected surfaces...
    Patch               Faces    Points   Surface topology                  
    inlet_dol           2870     3168     ok (non-closed singly connected)  
    outlet_dol          2870     3168     ok (non-closed singly connected)  
    boki_przednie       9270     10208    ok (non-closed singly connected)  
    boki_tylne          9270     10208    ok (non-closed singly connected)  
    defaultFaces        767682   770148   ok (non-closed singly connected)  

Checking geometry...
    Overall domain bounding box (-96.5 0.5 0) (546.5 5.5 139.998)
    Mesh (non-empty, non-wedge) directions (1 1 1)
    Mesh (non-empty) directions (1 1 1)
    Boundary openness (-2.62359e-17 -1.90826e-15 -2.4542e-17) OK.
    Max cell openness = 3.20902e-16 OK.
    Max aspect ratio = 3.06432 OK.
    Minimum face area = 0.0760913. Maximum face area = 0.562604.  Face area magnitudes OK.
    Min volume = 0.0217404. Max volume = 0.216776.  Total volume = 449644.  Cell volumes OK.
    Mesh non-orthogonality Max: 55.498 average: 15.1534
    Non-orthogonality check OK.
    Face pyramids OK.
    Max skewness = 1.76418 OK.
    Coupled point location match (average 0) OK.

Mesh OK.

End

I attach my 0 and system folders.

Time = 25

DILUPBiCG:  Solving for Ux, Initial residual = 0.699179, Final residual = 5.2484e-08, No Iterations 21
DILUPBiCG:  Solving for Uy, Initial residual = 0.699603, Final residual = 8.64538e-08, No Iterations 20
DILUPBiCG:  Solving for Uz, Initial residual = 0.699334, Final residual = 5.93537e-08, No Iterations 20
DICPCG:  Solving for p, Initial residual = 0.686836, Final residual = nan, No Iterations 1001
time step continuity errors : sum local = nan, global = -nan, cumulative = -nan
DILUPBiCG:  Solving for T, Initial residual = nan, Final residual = nan, No Iterations 1001
smoothSolver:  Solving for epsilon, Initial residual = nan, Final residual = nan, No Iterations 1000
smoothSolver:  Solving for k, Initial residual = nan, Final residual = nan, No Iterations 1000
ExecutionTime = 9236.17 s  ClockTime = 9255 s

Help me :)

seav

[seav]

Found something interesting here : http://www.cfd-online.com/Forums/ope...tml#post202437

---------
Edit :

I think there is problem with BC on pressure can anyone give an example of that BC ?

[seav]

Ok. I have found out what was bad.

Boundary Conditions for epsilon and k were set incorrectly. I have used those patterns to calculated them properly.

seav