# problem with Min/max rho

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 April 28, 2011, 06:24 problem with Min/max rho #1 Senior Member   Join Date: Mar 2011 Posts: 155 Rep Power: 7 Hi, I have problems of an increasing density. Even after the third time step (deltat=1) Min/max rho = 0,38 / 2,82. The fluid is air. So I would expect something around 0,6 I think the boundary conditions are set wrong. But I have made a setup identic to an other case where the density doesn't increase. Does someone have a clue which boundary conditions are prone to increase density? Best Regards, tH3f0rC3

 April 29, 2011, 02:09 #2 Senior Member   Join Date: Mar 2011 Posts: 155 Rep Power: 7 Time = 0 Solving for fluid region air DILUPBiCG: Solving for Ux, Initial residual = 1, Final residual = 0.075451081, No Iterations 1 DILUPBiCG: Solving for Uy, Initial residual = 1, Final residual = 0.016409508, No Iterations 2 DILUPBiCG: Solving for Uz, Initial residual = 1, Final residual = 0.085782023, No Iterations 1 DILUPBiCG: Solving for h, Initial residual = 0.99999999, Final residual = 0.01679794, No Iterations 2 Min/max T:573 973.15 GAMG: Solving for p_rgh, Initial residual = 1, Final residual = 0.0092815957, No Iterations 15 time step continuity errors : sum local = 0.008788245, global = -0.00098784668, cumulative = -0.00098784668 Min/max rho:0.35717528 0.68357341 DILUPBiCG: Solving for epsilon, Initial residual = 0.16612435, Final residual = 0.01454185, No Iterations 1 DILUPBiCG: Solving for k, Initial residual = 1, Final residual = 0.017992387, No Iterations 2 maxResidual: 1 convergence criterion: 1e-05 Solving for solid region stahl DICPCG: Solving for T, Initial residual = 0.99999768, Final residual = 0.068942702, No Iterations 3 Min/max T:573.14686 573.15 maxResidual: 0.99999768 convergence criterion: 0 Solving for solid region nickel DICPCG: Solving for T, Initial residual = 0.99994028, Final residual = 0.090359384, No Iterations 3 Min/max T:573.14825 573.15 maxResidual: 0.99994028 convergence criterion: 0 ExecutionTime = 38.64 s ClockTime = 39 s Time = 1 Solving for fluid region air DILUPBiCG: Solving for Ux, Initial residual = 0.53667496, Final residual = 0.0085865982, No Iterations 2 DILUPBiCG: Solving for Uy, Initial residual = 0.35251486, Final residual = 0.0051391246, No Iterations 2 DILUPBiCG: Solving for Uz, Initial residual = 0.52233136, Final residual = 0.0087582447, No Iterations 2 DILUPBiCG: Solving for h, Initial residual = 0.21057797, Final residual = 0.012716529, No Iterations 1 Min/max T:462.59027 973.15 GAMG: Solving for p_rgh, Initial residual = 0.70446497, Final residual = 0.0050321126, No Iterations 11 time step continuity errors : sum local = 0.55674613, global = 0.024030378, cumulative = 0.023042532 Min/max rho:0.35717528 1.0058956 DILUPBiCG: Solving for epsilon, Initial residual = 0.46625579, Final residual = 0.0099261637, No Iterations 2 DILUPBiCG: Solving for k, Initial residual = 0.43643392, Final residual = 0.0066078085, No Iterations 2 maxResidual: 0.70446497 convergence criterion: 1e-05 Solving for solid region stahl DICPCG: Solving for T, Initial residual = 0.25011936, Final residual = 0.012310353, No Iterations 3 Min/max T:573.14525 573.15 maxResidual: 0.25011936 convergence criterion: 0 Solving for solid region nickel DICPCG: Solving for T, Initial residual = 0.25023018, Final residual = 0.016446415, No Iterations 3 Min/max T:573.14708 573.15 maxResidual: 0.25023018 convergence criterion: 0 ExecutionTime = 64.08 s ClockTime = 65 s Time = 2 Solving for fluid region air DILUPBiCG: Solving for Ux, Initial residual = 0.13403801, Final residual = 0.013230832, No Iterations 1 DILUPBiCG: Solving for Uy, Initial residual = 0.16595325, Final residual = 0.0020208299, No Iterations 2 DILUPBiCG: Solving for Uz, Initial residual = 0.25960355, Final residual = 0.025016317, No Iterations 1 DILUPBiCG: Solving for h, Initial residual = 0.16627559, Final residual = 0.010752132, No Iterations 1 Min/max T:534.64735 973.15 GAMG: Solving for p_rgh, Initial residual = 0.89506057, Final residual = 0.0080816829, No Iterations 13 time step continuity errors : sum local = 0.45956801, global = 0.0087655559, cumulative = 0.031808087 Min/max rho:0.35717528 1.7719564 DILUPBiCG: Solving for epsilon, Initial residual = 0.21378091, Final residual = 0.0026405132, No Iterations 2 DILUPBiCG: Solving for k, Initial residual = 0.22492817, Final residual = 0.0028870615, No Iterations 2 maxResidual: 0.89506057 convergence criterion: 1e-05 Solving for solid region stahl DICPCG: Solving for T, Initial residual = 0.27108477, Final residual = 0.014070673, No Iterations 3 Min/max T:573.13955 573.15 maxResidual: 0.27108477 convergence criterion: 0 Solving for solid region nickel DICPCG: Solving for T, Initial residual = 0.2830701, Final residual = 0.020013987, No Iterations 3 Min/max T:573.14254 573.15 maxResidual: 0.2830701 convergence criterion: 0 ExecutionTime = 89.86 s ClockTime = 92 s Time = 3 Solving for fluid region air DILUPBiCG: Solving for Ux, Initial residual = 0.23944968, Final residual = 0.0038426078, No Iterations 2 DILUPBiCG: Solving for Uy, Initial residual = 0.21150255, Final residual = 0.0020588047, No Iterations 2 DILUPBiCG: Solving for Uz, Initial residual = 0.32799999, Final residual = 0.0046439848, No Iterations 2 DILUPBiCG: Solving for h, Initial residual = 0.10107597, Final residual = 0.0078826869, No Iterations 1 Min/max T:386.21599 973.15 GAMG: Solving for p_rgh, Initial residual = 0.49927178, Final residual = 0.0044080049, No Iterations 7 time step continuity errors : sum local = 0.34430616, global = -0.030489443, cumulative = 0.0013186441 Min/max rho:0.35717528 2.6131937 DILUPBiCG: Solving for epsilon, Initial residual = 0.1490834, Final residual = 0.0017493873, No Iterations 2 DILUPBiCG: Solving for k, Initial residual = 0.16570862, Final residual = 0.0019370394, No Iterations 2 maxResidual: 0.49927178 convergence criterion: 1e-05 Solving for solid region stahl DICPCG: Solving for T, Initial residual = 0.16418744, Final residual = 0.0058820311, No Iterations 3 Min/max T:573.13867 573.15 maxResidual: 0.16418744 convergence criterion: 0 Solving for solid region nickel DICPCG: Solving for T, Initial residual = 0.19501926, Final residual = 0.007847645, No Iterations 3 Min/max T:573.14225 573.15483 maxResidual: 0.19501926 convergence criterion: 0 ExecutionTime = 113.36 s ClockTime = 116 s Time = 4 Solving for fluid region air DILUPBiCG: Solving for Ux, Initial residual = 0.22595321, Final residual = 0.0030393622, No Iterations 2 DILUPBiCG: Solving for Uy, Initial residual = 0.15238153, Final residual = 0.0013200909, No Iterations 2 DILUPBiCG: Solving for Uz, Initial residual = 0.22923122, Final residual = 0.002846462, No Iterations 2 DILUPBiCG: Solving for h, Initial residual = 0.062614351, Final residual = 0.0006806479, No Iterations 2 Min/max T:279.0118 973.15 GAMG: Solving for p_rgh, Initial residual = 0.53300073, Final residual = 0.003828913, No Iterations 13 time step continuity errors : sum local = 0.26512713, global = -0.013485795, cumulative = -0.012167151 Min/max rho:0.35717528 2.7375473 DILUPBiCG: Solving for epsilon, Initial residual = 0.1074059, Final residual = 0.0012632828, No Iterations 2 DILUPBiCG: Solving for k, Initial residual = 0.10654469, Final residual = 0.0013340781, No Iterations 2 maxResidual: 0.53300073 convergence criterion: 1e-05 Solving for solid region stahl DICPCG: Solving for T, Initial residual = 0.13716868, Final residual = 0.0042027179, No Iterations 3 Min/max T:573.1365 573.15153 maxResidual: 0.13716868 convergence criterion: 0 Solving for solid region nickel DICPCG: Solving for T, Initial residual = 0.22413245, Final residual = 0.012011063, No Iterations 3 Min/max T:573.13721 573.16733 maxResidual: 0.22413245 convergence criterion: 0 ExecutionTime = 140.03 s ClockTime = 143 s Time = 5 Solving for fluid region air DILUPBiCG: Solving for Ux, Initial residual = 0.13262467, Final residual = 0.0018728448, No Iterations 2 DILUPBiCG: Solving for Uy, Initial residual = 0.082841106, Final residual = 0.00090359221, No Iterations 2 DILUPBiCG: Solving for Uz, Initial residual = 0.13754567, Final residual = 0.0017803001, No Iterations 2 DILUPBiCG: Solving for h, Initial residual = 0.041531078, Final residual = 0.00048567902, No Iterations 2 Min/max T:103.60674 973.15 GAMG: Solving for p_rgh, Initial residual = 0.53253605, Final residual = 0.0047493003, No Iterations 11 time step continuity errors : sum local = 0.2933433, global = -0.018351634, cumulative = -0.030518785 Min/max rho:0.1 3.3626218 DILUPBiCG: Solving for epsilon, Initial residual = 0.088507022, Final residual = 0.0010018227, No Iterations 2 DILUPBiCG: Solving for k, Initial residual = 0.075575277, Final residual = 0.00099140799, No Iterations 2 maxResidual: 0.53253605 convergence criterion: 1e-05 Solving for solid region stahl DICPCG: Solving for T, Initial residual = 0.14197114, Final residual = 0.0055143839, No Iterations 3 Min/max T:573.13286 573.15009 maxResidual: 0.14197114 convergence criterion: 0 Solving for solid region nickel DICPCG: Solving for T, Initial residual = 0.18726851, Final residual = 0.0087153376, No Iterations 3 Min/max T:573.12588 573.16692 maxResidual: 0.18726851 convergence criterion: 0 ExecutionTime = 165.79 s ClockTime = 169 s _______________________________________ This is the error message. Maybe someone of you knows why the temperature goes down wo fast and why the density goes to 0.1 and to 3.36. Maybe there is a typical error which has this for result. Best Regards, tH3f0rC3

 April 29, 2011, 12:43 Develop your case #3 Member   Ngoc-Minh Truong Join Date: Feb 2010 Location: Toulouse, France Posts: 42 Rep Power: 8 Hi tH3f0rC3, Would you mind expliciting your case more precisely please? What are you studying, what is the solver you're using, maybe even share the OF case. Minh

 April 30, 2011, 06:45 #4 Senior Member   Join Date: Mar 2011 Posts: 155 Rep Power: 7 I'm using the chtMultiRegionSimpleFoam-Solver. heat transfer from hot air to two solids is solved in this case. The flow is turbulent. I will post the case files on Monday. Best Regards, tH3f0rC3

May 2, 2011, 02:35
#5
Senior Member

Join Date: Mar 2011
Posts: 155
Rep Power: 7
The whole case is too large.
I uploaded the 0-files.
There must be the mistake.

Maybe it has to do something with the velocity at the Outlet! I don't really know the velocity at the outlet.
So how do I have to set up the boundary condition for unknown velocity at the outlet?

Remember, the temperature and the density are solved strange.
I have a new log-file of a test run of the case:

Code:
```/*---------------------------------------------------------------------------*\
| =========                 |                                                 |
| \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
|  \\    /   O peration     | Version:  1.7.1                                 |
|   \\  /    A nd           | Web:      www.OpenFOAM.com                      |
|    \\/     M anipulation  |                                                 |
\*---------------------------------------------------------------------------*/
Build  : 1.7.1-03e7e056c215
Exec   : chtMultiRegionSimpleFoam
Date   : Apr 29 2011
Time   : 11:54:01
Host   : dehgbwux2003.hgb.de.corp
PID    : 11803
Case   : /scratch/run2904
nProcs : 1
SigFpe : Enabling floating point exception trapping (FOAM_SIGFPE).
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
Create time
Create fluid mesh for region air for time = 0
Create solid mesh for region stahl for time = 0
Create solid mesh for region nickel for time = 0
*** Reading fluid mesh thermophysical properties for region air
Adding to thermoFluid
Selecting thermodynamics package hPsiThermo<pureMixture<constTransport<specieThermo<hConstThermo<perfectGas>>>>>
Adding to rhoFluid
Adding to KFluid
Adding to UFluid
--> FOAM Warning :
From function Field<Type>::Field(const word& keyword, const dictionary&, const label)
in file /local/OpenFOAM/src/OpenFOAM-1.7.1/src/OpenFOAM/lnInclude/Field.C at line 262
Reading "/scratch/run2904/0/air/U::boundaryField::Outlet" from line 72 to line 74
expected keyword 'uniform' or 'nonuniform', assuming deprecated Field format from Foam version 2.0.
Adding to phiFluid
Adding to gFluid
Adding to turbulence
Selecting turbulence model type RASModel
Selecting RAS turbulence model kEpsilon
kEpsilonCoeffs
{
Cmu             0.09;
C1              1.44;
C2              1.92;
C3              -0.33;
sigmak          1;
sigmaEps        1.3;
Prt             1;
}
Adding to ghFluid
Adding to ghfFluid
*** Reading solid mesh thermophysical properties for region stahl
Adding to rhos
Adding to cps
Adding to Ks
Adding to Ts
*** Reading solid mesh thermophysical properties for region nickel
Adding to rhos
Adding to cps
Adding to Ks
Adding to Ts
Time = 0

Solving for fluid region air
DILUPBiCG:  Solving for Ux, Initial residual = 1, Final residual = 0.075840117, No Iterations 1
DILUPBiCG:  Solving for Uy, Initial residual = 1, Final residual = 0.014107903, No Iterations 2
DILUPBiCG:  Solving for Uz, Initial residual = 1, Final residual = 0.083705137, No Iterations 1
DILUPBiCG:  Solving for h, Initial residual = 0.99998316, Final residual = 0.01319639, No Iterations 2
Min/max T:573 573.15
GAMG:  Solving for p_rgh, Initial residual = 1, Final residual = 0.0051781876, No Iterations 13
time step continuity errors : sum local = 0.0039532489, global = -0.00063879053, cumulative = -0.00063879053
Min/max rho:0.60644705 0.78142354
DILUPBiCG:  Solving for epsilon, Initial residual = 0.16563658, Final residual = 0.014436588, No Iterations 1
DILUPBiCG:  Solving for k, Initial residual = 1, Final residual = 0.016214493, No Iterations 2
maxResidual: 1  convergence criterion: 1e-05
Solving for solid region stahl
DICPCG:  Solving for T, Initial residual = 0.99999768, Final residual = 0.068942703, No Iterations 3
Min/max T:573.14686 573.15
maxResidual: 0.99999768  convergence criterion: 0
Solving for solid region nickel
DICPCG:  Solving for T, Initial residual = 0.99994028, Final residual = 0.090359384, No Iterations 3
Min/max T:573.14825 573.15
maxResidual: 0.99994028  convergence criterion: 0
ExecutionTime = 63.86 s  ClockTime = 66 s
Time = 1

Solving for fluid region air
DILUPBiCG:  Solving for Ux, Initial residual = 0.56895662, Final residual = 0.0089982176, No Iterations 2
DILUPBiCG:  Solving for Uy, Initial residual = 0.3536822, Final residual = 0.0050440663, No Iterations 2
DILUPBiCG:  Solving for Uz, Initial residual = 0.5518506, Final residual = 0.0092442119, No Iterations 2
DILUPBiCG:  Solving for h, Initial residual = 0.32564488, Final residual = 0.0045377951, No Iterations 2
Min/max T:571.58091 573.15
GAMG:  Solving for p_rgh, Initial residual = 0.29477473, Final residual = 0.001941573, No Iterations 7
time step continuity errors : sum local = 0.67825649, global = 0.089694597, cumulative = 0.089055807
Min/max rho:0.60644705 1.3110837
DILUPBiCG:  Solving for epsilon, Initial residual = 0.55402215, Final residual = 0.011962423, No Iterations 2
DILUPBiCG:  Solving for k, Initial residual = 0.49599343, Final residual = 0.0080077355, No Iterations 2
bounding k, min: -18.943042 max: 398.72545 average: 7.6498791
maxResidual: 0.56895662  convergence criterion: 1e-05
Solving for solid region stahl
DICPCG:  Solving for T, Initial residual = 0.27182412, Final residual = 0.013898103, No Iterations 3
Min/max T:573.1445 573.15
maxResidual: 0.27182412  convergence criterion: 0
Solving for solid region nickel
DICPCG:  Solving for T, Initial residual = 0.28695613, Final residual = 0.019926723, No Iterations 3
Min/max T:573.14588 573.15
maxResidual: 0.28695613  convergence criterion: 0
ExecutionTime = 112.2 s  ClockTime = 115 s
Time = 2

Solving for fluid region air
DILUPBiCG:  Solving for Ux, Initial residual = 0.16278617, Final residual = 0.0021432109, No Iterations 2
DILUPBiCG:  Solving for Uy, Initial residual = 0.17412247, Final residual = 0.0021318066, No Iterations 2
DILUPBiCG:  Solving for Uz, Initial residual = 0.28461952, Final residual = 0.0038330836, No Iterations 2
DILUPBiCG:  Solving for h, Initial residual = 0.26449442, Final residual = 0.004033607, No Iterations 2
Min/max T:571.88061 573.15
GAMG:  Solving for p_rgh, Initial residual = 0.77751685, Final residual = 0.0062887736, No Iterations 6
time step continuity errors : sum local = 0.59195663, global = 0.010690549, cumulative = 0.099746356
Min/max rho:0.40199287 1.9574668
DILUPBiCG:  Solving for epsilon, Initial residual = 0.28135636, Final residual = 0.0037514786, No Iterations 2
DILUPBiCG:  Solving for k, Initial residual = 0.32784195, Final residual = 0.0045176894, No Iterations 2
maxResidual: 0.77751685  convergence criterion: 1e-05
Solving for solid region stahl
DICPCG:  Solving for T, Initial residual = 0.3036831, Final residual = 0.016412494, No Iterations 3
Min/max T:573.13632 573.15
maxResidual: 0.3036831  convergence criterion: 0
Solving for solid region nickel
DICPCG:  Solving for T, Initial residual = 0.31418541, Final residual = 0.022825596, No Iterations 3
Min/max T:573.13808 573.15
maxResidual: 0.31418541  convergence criterion: 0
ExecutionTime = 160.56 s  ClockTime = 165 s
Time = 3

Solving for fluid region air
DILUPBiCG:  Solving for Ux, Initial residual = 0.39750205, Final residual = 0.0078947914, No Iterations 2
DILUPBiCG:  Solving for Uy, Initial residual = 0.28829257, Final residual = 0.0061730623, No Iterations 2
DILUPBiCG:  Solving for Uz, Initial residual = 0.58431649, Final residual = 0.010649235, No Iterations 2
DILUPBiCG:  Solving for h, Initial residual = 0.5205866, Final residual = 0.012444494, No Iterations 2
Min/max T:569.27616 583.4459
GAMG:  Solving for p_rgh, Initial residual = 0.47161716, Final residual = 0.0032267485, No Iterations 8
time step continuity errors : sum local = 0.36175555, global = -0.02833689, cumulative = 0.071409465
Min/max rho:0.1 2.1166729
DILUPBiCG:  Solving for epsilon, Initial residual = 0.18346751, Final residual = 0.0011161829, No Iterations 1
DILUPBiCG:  Solving for k, Initial residual = 0.45857557, Final residual = 0.025311302, No Iterations 1
maxResidual: 0.58431649  convergence criterion: 1e-05
Solving for solid region stahl
DICPCG:  Solving for T, Initial residual = 0.28665699, Final residual = 0.0088383441, No Iterations 3
Min/max T:573.13932 573.15732
maxResidual: 0.28665699  convergence criterion: 0
Solving for solid region nickel
DICPCG:  Solving for T, Initial residual = 0.38683709, Final residual = 0.02003107, No Iterations 3
Min/max T:573.14168 573.16846
maxResidual: 0.38683709  convergence criterion: 0
ExecutionTime = 209.82 s  ClockTime = 215 s
Time = 4

Solving for fluid region air
DILUPBiCG:  Solving for Ux, Initial residual = 0.24084048, Final residual = 0.004915614, No Iterations 2
DILUPBiCG:  Solving for Uy, Initial residual = 0.18115566, Final residual = 0.0053951585, No Iterations 2
DILUPBiCG:  Solving for Uz, Initial residual = 0.27080402, Final residual = 0.0046470605, No Iterations 2
DILUPBiCG:  Solving for h, Initial residual = 0.37679786, Final residual = 0.012483282, No Iterations 2
Min/max T:438.60355 610.52713
GAMG:  Solving for p_rgh, Initial residual = 0.52030113, Final residual = 0.0028035602, No Iterations 10
time step continuity errors : sum local = 0.34568672, global = -0.030484505, cumulative = 0.04092496
Min/max rho:0.1 1.6017838
DILUPBiCG:  Solving for epsilon, Initial residual = 0.79841535, Final residual = 0.018437522, No Iterations 1
DILUPBiCG:  Solving for k, Initial residual = 0.63095005, Final residual = 0.04504716, No Iterations 1
maxResidual: 0.52030113  convergence criterion: 1e-05
Solving for solid region stahl
DICPCG:  Solving for T, Initial residual = 0.2754991, Final residual = 0.012902121, No Iterations 3
Min/max T:573.13792 573.17359
maxResidual: 0.2754991  convergence criterion: 0
Solving for solid region nickel
DICPCG:  Solving for T, Initial residual = 0.45358473, Final residual = 0.032194137, No Iterations 3
Min/max T:573.12532 573.20601
maxResidual: 0.45358473  convergence criterion: 0
ExecutionTime = 259.62 s  ClockTime = 265 s
Time = 5

Solving for fluid region air
DILUPBiCG:  Solving for Ux, Initial residual = 0.40214255, Final residual = 0.017461495, No Iterations 1
DILUPBiCG:  Solving for Uy, Initial residual = 0.35903783, Final residual = 0.019879502, No Iterations 1
DILUPBiCG:  Solving for Uz, Initial residual = 0.29025645, Final residual = 0.022740052, No Iterations 1
DILUPBiCG:  Solving for h, Initial residual = 0.44847993, Final residual = 0.027396802, No Iterations 1
Min/max T:373.08383 608.76047
GAMG:  Solving for p_rgh, Initial residual = 0.5823908, Final residual = 0.0035429198, No Iterations 8
time step continuity errors : sum local = 0.3566107, global = -0.042827788, cumulative = -0.0019028278
Min/max rho:0.1 44.04069
DILUPBiCG:  Solving for epsilon, Initial residual = 0.10788477, Final residual = 0.0036857341, No Iterations 1
DILUPBiCG:  Solving for k, Initial residual = 0.39821838, Final residual = 0.018211054, No Iterations 1
maxResidual: 0.5823908  convergence criterion: 1e-05
Solving for solid region stahl
DICPCG:  Solving for T, Initial residual = 0.21480544, Final residual = 0.0070344644, No Iterations 3
Min/max T:573.13068 573.17775
maxResidual: 0.21480544  convergence criterion: 0
Solving for solid region nickel
DICPCG:  Solving for T, Initial residual = 0.21057009, Final residual = 0.010229285, No Iterations 3
Min/max T:573.10438 573.21747
maxResidual: 0.21057009  convergence criterion: 0
ExecutionTime = 307.3 s  ClockTime = 313 s
Time = 6

Solving for fluid region air
DILUPBiCG:  Solving for Ux, Initial residual = 0.40699826, Final residual = 0.0099007285, No Iterations 2
DILUPBiCG:  Solving for Uy, Initial residual = 0.26010932, Final residual = 0.0064237808, No Iterations 2
DILUPBiCG:  Solving for Uz, Initial residual = 0.36677597, Final residual = 0.0046692112, No Iterations 2
DILUPBiCG:  Solving for h, Initial residual = 0.58652006, Final residual = 0.015643329, No Iterations 2
Min/max T:171.31096 643.82848
GAMG:  Solving for p_rgh, Initial residual = 0.53001195, Final residual = 0.0032895079, No Iterations 7
time step continuity errors : sum local = 0.49966026, global = 0.065093024, cumulative = 0.063190196
Min/max rho:0.1 134.89823
DILUPBiCG:  Solving for epsilon, Initial residual = 0.054822687, Final residual = 0.0032112815, No Iterations 1
DILUPBiCG:  Solving for k, Initial residual = 0.21489778, Final residual = 0.015080186, No Iterations 1
maxResidual: 0.58652006  convergence criterion: 1e-05
Solving for solid region stahl
DICPCG:  Solving for T, Initial residual = 0.34935884, Final residual = 0.016915752, No Iterations 3
Min/max T:573.12116 573.16264
maxResidual: 0.34935884  convergence criterion: 0
Solving for solid region nickel
DICPCG:  Solving for T, Initial residual = 0.31412509, Final residual = 0.015406677, No Iterations 3
Min/max T:573.08681 573.19124
maxResidual: 0.31412509  convergence criterion: 0
ExecutionTime = 355.91 s  ClockTime = 362 s
Time = 7

Solving for fluid region air
DILUPBiCG:  Solving for Ux, Initial residual = 0.34865031, Final residual = 0.0062356977, No Iterations 2
DILUPBiCG:  Solving for Uy, Initial residual = 0.25374462, Final residual = 0.0071132344, No Iterations 2
DILUPBiCG:  Solving for Uz, Initial residual = 0.43121659, Final residual = 0.0095780306, No Iterations 2
DILUPBiCG:  Solving for h, Initial residual = 0.51742328, Final residual = 0.0037596098, No Iterations 3
Min/max T:-11.06336 643.42224
GAMG:  Solving for p_rgh, Initial residual = 0.53695834, Final residual = 0.004854288, No Iterations 8
time step continuity errors : sum local = 0.53624775, global = -0.027675898, cumulative = 0.035514298
Min/max rho:0.1 41.852515
DILUPBiCG:  Solving for epsilon, Initial residual = 0.076316093, Final residual = 0.0043348835, No Iterations 1
DILUPBiCG:  Solving for k, Initial residual = 0.28067978, Final residual = 0.0025771608, No Iterations 2
maxResidual: 0.53695834  convergence criterion: 1e-05
Solving for solid region stahl
DICPCG:  Solving for T, Initial residual = 0.21874858, Final residual = 0.010378139, No Iterations 3
Min/max T:573.11754 573.15601
maxResidual: 0.21874858  convergence criterion: 0
Solving for solid region nickel
DICPCG:  Solving for T, Initial residual = 0.28197206, Final residual = 0.017627815, No Iterations 3
Min/max T:573.08448 573.16856
maxResidual: 0.28197206  convergence criterion: 0
ExecutionTime = 406.1 s  ClockTime = 413 s
Time = 8

Solving for fluid region air
DILUPBiCG:  Solving for Ux, Initial residual = 0.22440566, Final residual = 0.003966875, No Iterations 2
DILUPBiCG:  Solving for Uy, Initial residual = 0.21140103, Final residual = 0.0037420796, No Iterations 2
DILUPBiCG:  Solving for Uz, Initial residual = 0.30890578, Final residual = 0.0057340137, No Iterations 2
DILUPBiCG:  Solving for h, Initial residual = 0.35515006, Final residual = 0.03495484, No Iterations 1```
Best Regards,
tH3f0rC3
Attached Files
 air.zip (5.8 KB, 11 views)

 May 3, 2011, 07:44 #6 Senior Member   Join Date: Mar 2011 Posts: 155 Rep Power: 7 Hi, is there someone who can help me with that? Best Regards, tH3f0rC3

 February 23, 2013, 04:27 #7 Senior Member     Ehsan Join Date: Oct 2012 Location: Iran Posts: 2,209 Rep Power: 19 hi.although it has past 2 years.do you remember how you solved the problem? I have similar trouble with velocity.

 February 23, 2013, 06:37 #8 Senior Member   Join Date: Mar 2011 Posts: 155 Rep Power: 7 Hi, I'm sorry, I don't have the files anymore. And I don't know how I solved the problem anymore. However, I hope you will solve the problem.

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