[_Revolution_]

Hello together,

I would like to change the fluid from water to air in the "heatduct" tutorial from OpenFoam V9, however the simulation breaks when I make the following changes to the thermophysicalProperties:

Water:

thermoType
{
    type            heRhoThermo;
    mixture         pureMixture;
    transport       const;
    thermo          hConst;
    equationOfState rhoConst;
    specie          specie;
    energy          sensibleEnthalpy;
}

mixture
{
    // Water

    specie
    {
        molWeight       18;
    }
    equationOfState
    {
        rho             1000;
    }
    thermodynamics
    {
        Cp              4181;
        Hf              0;
    }
    transport
    {
        mu              959e-6;
        Pr              6.62;
    }
}

Air:

thermoType
{
    type            heRhoThermo;
    mixture         pureMixture;
    transport       const;
    thermo          hConst;
    equationOfState perfectGas;
    specie          specie;
    energy          sensibleEnthalpy;
}

mixture
{
    specie
    {
        nMoles      1;
        molWeight   28.9;       // [g/mol]
    }
    thermodynamics
    {
        Cp          1005;       // [J/kg/K]
        Hf          0;
    }
    transport
    {
        mu          1.8e-05;    // [kg/m/s]
        Pr          0.7;
    }
 }

Do any other changes need to be made here for the tutorial to work with the fluid air?



I get the following error message if I change the thermalphysicalProperties:

[3] #0  Foam::error::printStack(Foam::Ostream&)[0] #0  Foam::error::printStack(Foam::Ostream&)[1] #0  Foam::error::printStack(Foam::Ostream&)[2] #0  Foam::error::printStack(Foam::Ostream&) at ??:?
 at ??:?
 at ??:?
 at ??:?
[0] #1  Foam::sigFpe::sigHandler(int)[2] #1  [3] #Foam::sigFpe::sigHandler(int)1  Foam::sigFpe::sigHandler(int)[1] #1  Foam::sigFpe::sigHandler(int) at ??:?
[2] #2  ? at ??:?
 at ??:?
[3] #2[0] #2    ?? at ??:?
[1] #2  ? in "/lib/x86_64-linux-gnu/libc.so.6"
 in "/lib/x86_64-linux-gnu/libc.so.6"
 in "/lib/x86_64-linux-gnu/libc.so.6"
 in "/lib/x86_64-linux-gnu/libc.so.6"
[2] #3  Foam::divide(Foam::Field<double>&, Foam::UList<double> const&, Foam::UList<double> const&)[3] #3  Foam::divide(Foam::Field<double>&, Foam::UList<double> const&, Foam::UList<double> const&)[0] #3  Foam::divide(Foam::Field<double>&, Foam::UList<double> const&, Foam::UList<double> const&)[1] #3  Foam::divide(Foam::Field<double>&, Foam::UList<double> const&, Foam::UList<double> const&) at ??:?
 at ??:?
 at ??:?
 at ??:?
[1] #4  Foam::operator/(Foam::UList<double> const&, Foam::UList<double> const&)[2] #4  Foam::operator/(Foam::UList<double> const&, Foam::UList<double> const&)[0] #4  Foam::operator/(Foam::UList<double> const&, Foam::UList<double> const&)[3] #4  Foam::operator/(Foam::UList<double> const&, Foam::UList<double> const&) at ??:?
[2] #5   at ??:?
[1] #5   at ??:?
[0] #5   at ??:?
[3] #5  ???? in "/opt/openfoam9/platforms/linux64GccDPInt32Opt/bin/chtMultiRegionFoam"
[1] #6   in "/opt/openfoam9/platforms/linux64GccDPInt32Opt/bin/chtMultiRegionFoam"
[2] #6   in "/opt/openfoam9/platforms/linux64GccDPInt32Opt/bin/chtMultiRegionFoam"
[3] #6   in "/opt/openfoam9/platforms/linux64GccDPInt32Opt/bin/chtMultiRegionFoam"
[0] #6  ???? in "/opt/openfoam9/platforms/linux64GccDPInt32Opt/bin/chtMultiRegionFoam"
[2] #7  __libc_start_main in "/opt/openfoam9/platforms/linux64GccDPInt32Opt/bin/chtMultiRegionFoam"
[3] #7  __libc_start_main in "/opt/openfoam9/platforms/linux64GccDPInt32Opt/bin/chtMultiRegionFoam"
[0] #7   in "/opt/openfoam9/p__libc_start_mainlatforms/linux64GccDPInt32Opt/bin/chtMultiRegionFoam"
[1] #7  __libc_start_main in "/lib/x86_64-linux-gnu/libc.so.6"
[2] #8   in "/lib/x86_64-linux-gnu/libc.so.6"
[3] #8   in "/lib/x86_64-linux-gnu/libc.so.6"
[0] #8   in "/lib/x86_64-linux-gnu/libc.so.6"
[1] #8  ???? in "/opt/openfoam9/platforms/linux64GccDPInt32Opt/bin/chtMultiRegionFoam"
[7560:11981] *** Process received signal ***
[7560:11981] Signal: Floating point exception (8)
[7560:11981] Signal code:  (-6)
[7560:11981] Failing at address: 0x3e800002ecd
[7560:11981] [ 0] /lib/x86_64-linux-gnu/libc.so.6(+0x46210)[0x7fc307c2a210]
[7560:11981] [ 1] /lib/x86_64-linux-gnu/libc.so.6(gsignal+0xcb)[0x7fc307c2a18b]
[7560:11981] [ 2] /lib/x86_64-linux-gnu/libc.so.6(+0x46210)[0x7fc307c2a210]
[7560:11981] [ 3]  in "/opt/openfoam9/platforms/linux64GccDPInt32Opt/bin/chtMultiRegionFoam"
[7560:11982] *** Process received signal ***
[7560:11982] Signal: Floating point exception (8)
[7560:11982] Signal code:  (-6)
[7560:11982] Failing at address: 0x3e800002ece
[7560:11982] [ 0] /lib/x86_64-linux-gnu/libc.so.6(+0x46210)[0x7f74cdb96210]
[7560:11982] [ 1]  in "/opt/openfoam9/platfor/lib/x86_64-linux-gnu/libc.so.6(gsignal+0xcb)[0x7f74cdb9618b]
[7560:11982] [ 2] ms/linux64GccDPInt32Opt/bin/chtMultiRegi/lib/x86_64-linux-gnu/libc.so.6(+0x46210)[0x7f74cdb96210]
[7560:11982] [ 3] onFoam"
[7560:11979] *** Process received signal ***
[7560:11979] Signal: Floating point exception (8)
[7560:11979] Signal code:  (-6)
[7560:11979] Failing at address: 0x3e800002ecb
[7560:11979] [ 0] /lib/x86_64-linux-gnu/libc.so.6(+0x46210)[0x7f2854653210]
[7560:11979] [ 1] /lib/x86_64-linux-gnu/libc.so.6(gsignal+0xcb)[0x7f285465318b]
[7560:11979] [ 2] /lib/x86_64-linux-gnu/libc.so.6(+0x46210)[0x7f2854653210]
[7560:11979] [ 3] /opt/openfoam9/platforms/linux64GccDPInt32Opt/lib/libOpenFOAM.so(_ZN4Foam6divideERNS_5FieldIdEERKNS_5UListIdEES6_+0x5b)[0x7fc308826dab]
[7560:11981] [ 4] /opt/openfoam9/platforms/linux64GccDPInt32Opt/lib/libOpenFOAM.so(_ZN4Foam6divideERNS_5FieldIdEERKNS_5UListIdEES6_+0x5b)[0x7f74ce792dab]
[7560:11982] [ 4] /opt/openfoam9/platforms/linux64GccDPInt32Opt/lib/libOpenFOAM.so(_ZN4FoamdvERKNS_5UListIdEES3_+0x59)[0x7fc3088288b9]
[7560:11981] [ 5] /opt/openfoam9/platforms/linux64GccDPInt32Opt/lib/libOpenFOAM.so(_ZN4Foam6divideERNS_5FieldIdEERKNS_5UListIdEES6_+0x5b)[0x7f285524fdab]
[7560:11979] [ 4] chtMultiRegionFoam(+0x4c834)[0x560aa2885834]
[7560:11981] [ 6] chtMultiRegionFoam(+0x41e96)[0x560aa287ae96]
[7560:11981] [ 7] /lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xf3)[0x7fc307c0b0b3]
[7560:11981] [ 8] chtMultiRegionFoam(+0x4b96e)[0x560aa288496e]
[7560:11981] *** End of error message ***
 in "/opt/openfoam9/platforms/linux64GccDPInt32Opt/bin/chtMultiRegionFoam"
[7560:11980] *** Process received signal ***
[7560:11980] Signal: Floating point exception (8)
[7560:11980] Signal code:  (-6)
[7560:11980] Failing at address: 0x3e800002ecc
[7560:11980] [ 0] /lib/x86_64-linux-gnu/libc.so.6(+0x46210)[0x7ff6b2191210]
[7560:11980] [ 1] /opt/openfoam9/platforms/linux64GccDPInt32Opt/lib/libOpenFOAM.so(_ZN4FoamdvERKNS_5UListIdEES3_+0x59)[0x7f74ce7948b9]
[7560:11982] [ 5] /lib/x86_64-linux-gnu/libc.so.6(gsignal+0xcb)[0x7ff6b219118b]
[7560:11980] [ 2] chtMultiRegionFoam(+0x4c834)[0x560a69a27834]
[7560:11982] [ 6] /lib/x86_64-linux-gnu/libc.so.6(+0x46210)[0x7ff6b2191210]
[7560:11980] [ 3] chtMultiRegionFoam(+0x41e96)[0x560a69a1ce96]
[7560:11982] [ 7] /lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xf3)[0x7f74cdb770b3]
[7560:11982] [ 8] /opt/openfoam9/platforms/linux64GccDPInt32Opt/lib/libOpenFOAM.so(_ZN4FoamdvERKNS_5UListIdEES3_+0x59)[0x7f28552518b9]
[7560:11979] [ 5] chtMultiRegionFoam(+0x4b96e)[0x560a69a2696e]
[7560:11982] *** End of error message ***
chtMultiRegionFoam(+0x4c834)[0x556817f09834]
[7560:11979] [ 6] chtMultiRegionFoam(+0x41e96)[0x556817efee96]
[7560:11979] [ 7] /lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xf3)[0x7f28546340b3]
[7560:11979] [ 8] chtMultiRegionFoam(+0x4b96e)[0x556817f0896e]
[7560:11979] *** End of error message ***
/opt/openfoam9/platforms/linux64GccDPInt32Opt/lib/libOpenFOAM.so(_ZN4Foam6divideERNS_5FieldIdEERKNS_5UListIdEES6_+0x5b)[0x7ff6b2d8ddab]
[7560:11980] [ 4] /opt/openfoam9/platforms/linux64GccDPInt32Opt/lib/libOpenFOAM.so(_ZN4FoamdvERKNS_5UListIdEES3_+0x59)[0x7ff6b2d8f8b9]
[7560:11980] [ 5] chtMultiRegionFoam(+0x4c834)[0x5590e5d31834]
[7560:11980] [ 6] chtMultiRegionFoam(+0x41e96)[0x5590e5d26e96]
[7560:11980] [ 7] /lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xf3)[0x7ff6b21720b3]
[7560:11980] [ 8] chtMultiRegionFoam(+0x4b96e)[0x5590e5d3096e]
[7560:11980] *** End of error message ***
--------------------------------------------------------------------------
Primary job  terminated normally, but 1 process returned
a non-zero exit code. Per user-direction, the job has been aborted.
--------------------------------------------------------------------------
--------------------------------------------------------------------------
mpirun noticed that process rank 1 with PID 0 on node 7560 exited on signal 8 (Floating point exception).
--------------------------------------------------------------------------

Greetings
_Revolution_

[al.csc]

You need to change from fluid to gas.
constant/regionProperties: fluid (fluid) -> fluid (gas)
and then all the other keywords.