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-   -   rhoPimpleFoam and sort of vortex tube (http://www.cfd-online.com/Forums/openfoam/90607-rhopimplefoam-sort-vortex-tube.html)

pcaste12 July 15, 2011 09:10

rhoPimpleFoam and sort of vortex tube
 
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Hi all,

I am quite new in Foam and CFD sorry about my ignorance! I have read lots of post and try lots of different configuration but unfortunately I didn't make it work.
I would like to simulate the effect of the heat exchange into a vortex tube using inlet air to a certain speed. I am pretty sure that I didn't use the correct solver with the correct values. I put some result of simulation too.
here is part of the result:
diagonal: Solving for rho, Initial residual = 0, Final residual = 0, No Iterations 0
time step continuity errors : sum local = 0.777335, global = -0.191246, cumulative = 404.083
rho max/min : 8.861e+12 -1.13053e+13
bounding p, min: -9.94366e+19 max: 7.80438e+19 average: -3.31783e+15
DICPCG: Solving for p, Initial residual = 0.989448, Final residual = 0.00447131, No Iterations 4
diagonal: Solving for rho, Initial residual = 0, Final residual = 0, No Iterations 0
time step continuity errors : sum local = -9.44222e+10, global = 232.563, cumulative = 636.646
rho max/min : 1.16035e+17 -2.71668e+14
bounding p, min: -2.38947e+21 max: 1.03977e+24 average: 5.68377e+19
DICPCG: Solving for p, Initial residual = 0.986677, Final residual = 0.00929993, No Iterations 8
diagonal: Solving for rho, Initial residual = 0, Final residual = 0, No Iterations 0
time step continuity errors : sum local = -133.181, global = 1, cumulative = 637.646
rho max/min : 2.23377e+15 -1.37108e+15
bounding p, min: -1.22796e+22 max: 1.97893e+22 average: 1.312e+19
DICPCG: Solving for p, Initial residual = 0.842719, Final residual = 0.00630697, No Iterations 11
diagonal: Solving for rho, Initial residual = 0, Final residual = 0, No Iterations 0
time step continuity errors : sum local = 7.46699, global = 0.99952, cumulative = 638.645
rho max/min : 1.02758e+26 -6.25816e+25
bounding p, min: -5.57688e+32 max: 9.1386e+32 average: 1.95082e+28
DILUPBiCG: Solving for epsilon, Initial residual = 0.189303, Final residual = 4.05564e-06, No Iterations 37
bounding epsilon, min: -6.18411e+45 max: 1.28338e+50 average: 1.42126e+46
DILUPBiCG: Solving for k, Initial residual = 0.874965, Final residual = 9.08666e-07, No Iterations 3
DILUPBiCG: Solving for Ux, Initial residual = 1.38884e-12, Final residual = 1.38884e-12, No Iterations 0
DILUPBiCG: Solving for Uy, Initial residual = 2.89562e-12, Final residual = 2.89562e-12, No Iterations 0
DILUPBiCG: Solving for Uz, Initial residual = 5.69284e-13, Final residual = 5.69284e-13, No Iterations 0[0] #0 [1] #0 [3] #0 Foam::error::printStack(Foam::Ostream&)Foam::error ::printStack(Foam::Ostream&)Foam::error::printStac k(Foam::Ostream&)DILUPBiCG: Solving for h, Initial residual = 0.0837411, Final residual = 0.00105101, No Iterations 1
in "/opt/openfoam171/lib/linux64Gcc in in "/opt/openfoam171/lib/linux64GccDPOpt/libOpenFDPOpt/libOpenFOAM.so"
OAM.so"
...

I attach all the case for those who will kindly look at it.

Any help wil be welcomed.
Pierre.


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