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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: 1e05 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: 1e05 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: 1e05 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: 1e05 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: 1e05 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: 1e05 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 30, 2011, 06:45 

#4 
Senior Member
Join Date: Mar 2011
Posts: 155
Rep Power: 7 
I'm using the chtMultiRegionSimpleFoamSolver.
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 0files. 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 logfile 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 : 1.7.103e7e056c215 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/OpenFOAM1.7.1/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: 1e05 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: 1e05 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: 1e05 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: 1e05 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: 1e05 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: 1e05 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: 1e05 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: 1e05 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 tH3f0rC3 

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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Adiabatic and Rotating wall (Convection problem)  ParodDav  CFX  5  April 29, 2007 19:13 