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-   -   LesBuoyantFoam (http://www.cfd-online.com/Forums/openfoam-solving/57831-lesbuoyantfoam.html)

 sjrees October 3, 2008 12:26

I am interested in the new les

I am interested in the new lesBuoyantFoam solver in the 1.5 distribution. I can't see any tutorial cases and I can't find any threads mentioning this solver so far. Does anybody have a test case that could be posted?

Thanks, Simon

 mahaputra March 9, 2009 08:16

Dear All i tried lesBuoya

Dear All

i tried lesBuoyantFoam on my case

since there is no tutorial cases on this solver, i tried to modify boundary condition, constant and system from BuoyantFoam, coodles and LesInterFoam solvers cases.

but i got an error message after some interations on Time = 0.20375

Courant Number mean: 4.715132e-05 max: 0.41762132
deltaT = 0.00125
Time = 0.20375

diagonal: Solving for rho, Initial residual = 0, Final residual = 0, No Iterations 0
DILUPBiCG: Solving for k, Initial residual = 0.99887462, Final residual = 1.0797669e-08, No Iterations 2
bounding k, min: -1.915483 max: 216.44551 average: 0.11620192
DILUPBiCG: Solving for Ux, Initial residual = 0.065561486, Final residual = 1.4688951e-06, No Iterations 1
DILUPBiCG: Solving for Uy, Initial residual = 0.15697778, Final residual = 2.4897678e-06, No Iterations 1
DILUPBiCG: Solving for Uz, Initial residual = 0.14679518, Final residual = 2.4445675e-06, No Iterations 1
DILUPBiCG: Solving for h, Initial residual = 0.0005069952, Final residual = 1.3786841e-09, 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/linuxGccDPOpt/libOpenFOAM.so"
#1 Foam::error::abort() in "/home/user/OpenFOAM/OpenFOAM-1.5/lib/linuxGccDPOpt/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/linuxGccDPOpt/libbasicThermophysicalModels .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/linuxGccDPOpt/libbasicThermophysicalModels .so"
#4 main in "/home/user/OpenFOAM/OpenFOAM-1.5/applications/bin/linuxGccDPOpt/lesBuoyantFoam"
#5 __libc_start_main in "/lib/tls/i686/cmov/libc.so.6"

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-1.5/src/thermophysicalModels/specie/lnInclude/ specieThermoI.H at line 78.

FOAM aborting

Aborted

 mahaputra March 9, 2009 12:31

oh ya, i set my controldi

oh ya,

i set my controldict as shown below:

application lesBuoyantFoam;

startFrom startTime;

startTime 0;

stopAt endTime;

endTime 0.5;

deltaT 1e-04;

writeInterval 5e-03;

............................................

i mix boundary in dictionary from some solvers (those i mentioned above)

e.g :

LESProperties from coodles

epsilon : 0.01

k : 0.1

pd :

Walls
{
type fixedFluxBuoyantPressure;
value uniform 0;
}

any comment and suggestion?

 justin1104 June 26, 2009 03:22

HI,
I have the same problem,have you solved it?

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