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Unable to calculate lift and drag coefficients and forces using icoFaom

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Old   December 9, 2017, 12:51
Default Unable to calculate lift and drag coefficients and forces using icoFaom
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Sydney Mserembo
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Hi,

When trying to compute the forces and coefficients around a 2d aerofoil section, i get this error message...

--> FOAM FATAL IO ERROR:
expected a [ in dimensionSet
in stream ITstream : C:/PROGRA~1/BLUECF~1/ofuser-of5/run/aero3/constant/transportProperties.nu, line 18, IOstream: Version 2.0, format ASCII, line 18, OPENED, GOOD


file: C:/PROGRA~1/BLUECF~1/ofuser-of5/run/aero3/constant/transportProperties.nu at line 18.

From function Foam::Istream& Foam::dimensionSet::read(Foam::Istream&, Foam::scalar&, const Foam::HashTable<Foam::dimensioned<double> >&)
in file dimensionSet/dimensionSetIO.C at line 419.

FOAM exiting

I have already tried editing nu in transportproperties into different formats but nothing works.

I have tried both

nu l0 2 -1 0 0 0 0] 1e-05;

and

nu nu[0 2 -1 0 0 0 0]1e-05
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Old   December 10, 2017, 14:32
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Taher Chegini
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it seems like a typo, it should be:
nu [0 2 -1 0 0 0 0] 1e-05; // change | to [
or
nu nu[0 2 -1 0 0 0 0]1e-05; // add semicolon

if you're using OF 5 you don't have to add the dimension so nu 1e-5; is enough.
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Old   September 24, 2020, 10:51
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Alexandre Cardoso
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Hi,
Same problem, I've tried the solutions above and nothing. The model is running but when I try to run with functions it stops working with this error:

$ icoFoam >log


--> FOAM FATAL IO ERROR:
expected a [ in dimensionSet
in stream ITstream : C:/PROGRA~1/BLUECF~1/ofuser-of5/run/cilindro61/constant/transportProperties.nu, line 16, IOstream: Version 2.0, format ASCII, line 16, OPENED, EOF


file: C:/PROGRA~1/BLUECF~1/ofuser-of5/run/cilindro61/constant/transportProperties.nu at line 16.

From function Foam::Istream& Foam::dimensionSet::read(Foam::Istream&, Foam::scalar&, const Foam::HashTable<Foam::dimensioned<double> >&)
in file dimensionSet/dimensionSetIO.C at line 419.

FOAM exiting

------------------

function in controlDict

functions
{
forces
{
type forceCoeffs;
libs ("libforces.so");
writeControl timeStep;
writeInterval 1;

patches
(
cilindro
);

// Field names
p p;
U U;
rho rho;

writeFields yes;

log true;
rho rhoInf;
rhoInf 1;
CofR (0 0 0);
liftDir (0 1 0);
dragDir (1 0 0);
pitchAxis (0 0 1);
magUInf 19.5;
lRef 1;
Aref 1;
}
}

-----------
transportProperties

transportModel Newtonian;

//nu nu[0 2 -1 0 0 0 0] 0.1;
nu nu 1e-01;
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Old   September 24, 2020, 16:58
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Which error do you get, if you use the following line?
Code:
nu              [0 2 -1 0 0 0 0] 0.1;
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