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what this error comes from?

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Old   December 4, 2012, 18:17
Default what this error comes from?
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Create time

Create mesh for time = 0

Reading thermophysical properties

Selecting thermodynamics package ePsiThermo<pureMixture<constTransport<specieThermo <hConstThermo<perfectGas>>>>>
#0 Foam::error::printStack(Foam::Ostream&) in "/opt/openfoam211/platforms/linux64GccDPOpt/lib/libOpenFOAM.so"
#1 Foam::sigFpe::sigHandler(int) in "/opt/openfoam211/platforms/linux64GccDPOpt/lib/libOpenFOAM.so"
#2 in "/lib/x86_64-linux-gnu/libc.so.6"
#3 Foam::ePsiThermo<Foam::pureMixture<Foam::constTran sport<Foam::specieThermo<Foam::hConstThermo<Foam:: perfectGas> > > > >::calculate() in "/opt/openfoam211/platforms/linux64GccDPOpt/lib/libbasicThermophysicalModels.so"
#4 Foam::ePsiThermo<Foam::pureMixture<Foam::constTran sport<Foam::specieThermo<Foam::hConstThermo<Foam:: perfectGas> > > > >::ePsiThermo(Foam::fvMesh const&) in "/opt/openfoam211/platforms/linux64GccDPOpt/lib/libbasicThermophysicalModels.so"
#5 Foam::basicPsiThermo::addfvMeshConstructorToTable< Foam::ePsiThermo<Foam::pureMixture<Foam::constTran sport<Foam::specieThermo<Foam::hConstThermo<Foam:: perfectGas> > > > > >::New(Foam::fvMesh const&) in "/opt/openfoam211/platforms/linux64GccDPOpt/lib/libbasicThermophysicalModels.so"
#6 Foam::basicPsiThermo::New(Foam::fvMesh const&) in "/opt/openfoam211/platforms/linux64GccDPOpt/lib/libbasicThermophysicalModels.so"
#7
in "/opt/openfoam211/platforms/linux64GccDPOpt/bin/rhoCentralFoam"
#8 __libc_start_main in "/lib/x86_64-linux-gnu/libc.so.6"
#9
in "/opt/openfoam211/platforms/linux64GccDPOpt/bin/rhoCentralFoam"
Floating point exception
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Old   December 5, 2012, 03:08
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I use a 64-bit version on a system by 2Gb Ram.could the problem arises from this point?or what?
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Old   December 5, 2012, 04:24
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I would check the source code for

Code:
ePsiThermo<Foam::pureMixture<Foam::constTran   sport<Foam::specieThermo<Foam::hConstThermo<Foam::   perfectGas> > > > >::calculate()
There could be the chance that you somehow divide by a zero value like division by zero density or similar. I once had that case.
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Old   December 5, 2012, 06:40
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may be this is because of initial condition.I put pressure and temperature zero due to empty channel that should become full.is it incorrect?
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Old   December 5, 2012, 08:26
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for instance see this time step:


Mean and max Courant Numbers = 0.140537 0.296461
deltaT = 1.31579e-07
Time = 4.86842e-06

diagonal: Solving for rho, Initial residual = 0, Final residual = 0, No Iterations 0
diagonal: Solving for rhoUx, Initial residual = 0, Final residual = 0, No Iterations 0
diagonal: Solving for rhoUy, Initial residual = 0, Final residual = 0, No Iterations 0
smoothSolver: Solving for Ux, Initial residual = 1.13168e-05, Final residual = 2.04904e-17, No Iterations 3
smoothSolver: Solving for Uy, Initial residual = 0.00894171, Final residual = 1.97135e-17, No Iterations 3
diagonal: Solving for rhoE, Initial residual = 0, Final residual = 0, No Iterations 0
smoothSolver: Solving for e, Initial residual = 1.43136e-05, Final residual = 1.55745e-10, No Iterations 201
smoothSolver: Solving for omega, Initial residual = 0.000587127, Final residual = 1.92363e-11, No Iterations 2
smoothSolver: Solving for k, Initial residual = 0.00730572, Final residual = 1.34671e-10, No Iterations 2
ExecutionTime = 38.88 s ClockTime = 58 s
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Old   December 5, 2012, 23:07
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Quote:
Originally Posted by immortality View Post
may be this is because of initial condition.I put pressure and temperature zero due to empty channel that should become full.is it incorrect?
Maybe you should post an overview what you are doing. Setting Temperature to zero may cause your error. I am not sure if there is a valid setting for such an initial condition.
Try to check the
Code:
calculate()
method if your error still occurs.
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Old   December 22, 2012, 11:57
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thanks.how shuld I use calculate method?
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Old   December 24, 2012, 01:53
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Did you try to find the source code of

Quote:
Originally Posted by Hanzo View Post

Code:
ePsiThermo<Foam::pureMixture<Foam::constTran   sport<Foam::specieThermo<Foam::hConstThermo<Foam::   perfectGas> > > > >::calculate()
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