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-   -   Problem in running mesh imported from fluent to foam (http://www.cfd-online.com/Forums/openfoam-meshing-other/61675-problem-running-mesh-imported-fluent-foam.html)

vishal October 30, 2008 00:45

Hi, I have imported a mesh
 
Hi,

I have imported a mesh from Fluent to OpenFoam mesh is converted sucessfully but after i apply boundry conditions and run it i am getting following error even if the Courant Number is very small

Can anyone help me in this matter:

Time = 2.53e-06

Courant Number mean: 0.00019371 max: 0.0119133
diagonal: Solving for rho, Initial residual = 0, Final residual = 0, No Iterations 0
DILUPBiCG: Solving for Ux, Initial residual = 0.000946563, Final residual = 1.76591e-10, No Iterations 1
DILUPBiCG: Solving for Uy, Initial residual = 0.00203507, Final residual = 2.71693e-10, No Iterations 1
DILUPBiCG: Solving for Uz, Initial residual = 0.000729181, Final residual = 2.00435e-10, No Iterations 1
DILUPBiCG: Solving for h, Initial residual = 0.000308165, Final residual = 5.5886e-10, No Iterations 1


Maximum number of iterations exceeded#0 Foam::error::printStack(Foam:http://www.cfd-online.com/OpenFOAM_D...part/proud.gifstream&) in "/home/user/OpenFOAM/OpenFOAM-1.5/lib/linux64GccDPOpt/libOpenFOAM.so"
#1 Foam::error::abort() in "/home/user/OpenFOAM/OpenFOAM-1.5/lib/linux64GccDPOpt/libOpenFOAM.so"
#2 Foam::hThermo<foam::puremixture<foam::consttranspo rt<foam::speciethermo<foam::hc onstthermo<foam::perfectgas> > > > >::calculate() in "/home/user/OpenFOAM/OpenFOAM-1.5/lib/linux64GccDPOpt/libbasicThermophysicalMode ls.so"
#3 Foam::hThermo<foam::puremixture<foam::consttranspo rt<foam::speciethermo<foam::hc onstthermo<foam::perfectgas> > > > >::correct() in "/home/user/OpenFOAM/OpenFOAM-1.5/lib/linux64GccDPOpt/libbasicThermophysicalMode ls.so"
#4 main in "/home/user/OpenFOAM/OpenFOAM-1.5/applications/bin/linux64GccDPOpt/sonicTurbFoam "
#5 __libc_start_main in "/lib64/libc.so.6"
#6 Foam::regIOobject::readIfModified() in "/home/user/OpenFOAM/OpenFOAM-1.5/applications/bin/linux64GccDPOpt/sonicTurbFoam "


From function specieThermo<thermo>::T(scalar f, scalar T0, scalar (specieThermo<thermo>::*F)(const scalar) const, scalar (specieThermo<thermo>::*dFdT)(const scalar) const) const
in file /home/dm2/henry/OpenFOAM/OpenFOAM-dev/src/thermophysicalModels/specie/lnInclude/ specieThermoI.H at line 78.

FOAM aborting

Aborted
user@zeus10:~/OpenFOAM/Vishal/run/Fluent/Mesh_Fluent>

venkateshtl February 4, 2009 04:15

Hi Vishal Jambhekar This
 
Hi Vishal Jambhekar

This is Venkatesh here i created NACA0012 airfoil in Gambit exportted into fluent .Now i need to convert FluentToFoam convversion.But i am not getting it so can u please suggest the way to convvert fluent file into Foam format to compare the result of fluent and openGoam

hellorishi February 6, 2009 11:05

Have you scaled your mesh whil
 
Have you scaled your mesh while importing it from fluent?

check wiki on how to scale:
http://openfoamwiki.net/index.php/Fluent3DMeshToFoam

Courant number is dependent on dt and dx. So my guess is tweaking one of them will bring the courant number to desired level.

dx can be tweaked while importing the mesh
fluent3DMeshtoFoam fluent.msh -scale 0.001

dt can be tweaked in system/controlDict file deltaT


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