[sachin1119]

Hi,



I am trying to run Numerical Simulation of Battery Cooling system using OpenFOAM-V11.



There are 3 cases for this simulation. Case 1 was creating the mesh and in Case 2 we will be applying the thermo physical properties. I was able to generate the mesh and I am facing some problem while running case-2.



I am facing this error while running the chtMultiRegionFoam solver


--> FOAM FATAL ERROR:
Negative initial temperature T0: -1.44502

From function static Foam::scalar Foam::species::thermo<Thermo, Type>::T(const ThermoType&, Foam::scalar, Foam::scalar, Foam::scalar, FType, dFdTType, LimitType, bool) [with ThermoType = Foam::species::thermo<Foam::eConstThermo<Foam::rho Const<Foam::specie> >, Foam::sensibleInternalEnergy>; FType = double (Foam::eConstThermo<Foam::rhoConst<Foam::specie> >::*)(double, double) const; dFdTType = double (Foam::eConstThermo<Foam::rhoConst<Foam::specie> >::*)(double, double) const; LimitType = double (Foam::eConstThermo<Foam::rhoConst<Foam::specie> >::*)(double) const; Thermo = Foam::eConstThermo<Foam::rhoConst<Foam::specie> >; Type = Foam::sensibleInternalEnergy; Foam::scalar = double]
in file /home/user/OpenFOAM-11/src/thermophysicalModels/specie/lnInclude/thermoI.H at line 300.

FOAM aborting

#0 Foam::error:rintStack(Foam::Ostream&) at ??:?
#1 Foam::error::abort() at ??:?
#2 double Foam::species::thermo<Foam::eConstThermo<Foam::rho Const<Foam::specie> >, Foam::sensibleInternalEnergy>::T<Foam::species::th ermo<Foam::eConstThermo<Foam::rhoConst<Foam::speci e> >, Foam::sensibleInternalEnergy>, double (Foam::eConstThermo<Foam::rhoConst<Foam::specie> >::*)(double, double) const, double (Foam::eConstThermo<Foam::rhoConst<Foam::specie> >::*)(double, double) const, double (Foam::eConstThermo<Foam::rhoConst<Foam::specie> >::*)(double) const>(Foam::species::thermo<Foam::eConstThermo<Fo am::rhoConst<Foam::specie> >, Foam::sensibleInternalEnergy> const&, double, double, double, double (Foam::eConstThermo<Foam::rhoConst<Foam::specie> >::*)(double, double) const, double (Foam::eConstThermo<Foam::rhoConst<Foam::specie> >::*)(double, double) const, double (Foam::eConstThermo<Foam::rhoConst<Foam::specie> >::*)(double) const, bool) at ??:?
#3 Foam::heRhoThermo<Foam::rhoThermo::composite, Foam:ureMixture<Foam::constTransport<Foam::speci es::thermo<Foam::eConstThermo<Foam::rhoConst<Foam: :specie> >, Foam::sensibleInternalEnergy> > > >::calculate() at ??:?
#4 virtual thunk to Foam::heRhoThermo<Foam::rhoThermo::composite, Foam:ureMixture<Foam::constTransport<Foam::speci es::thermo<Foam::eConstThermo<Foam::rhoConst<Foam: :specie> >, Foam::sensibleInternalEnergy> > > >::correct() at ??:?
#5 Foam::solvers::fluid::thermophysicalPredictor() at ??:?
#6 ? in "/home/user/OpenFOAM-11/platforms/linux64GccDPInt32Opt/bin/foamMultiRun"
#7 __libc_start_main in "/lib/x86_64-linux-gnu/libc.so.6"
#8 ? in "/home/user/OpenFOAM-11/platforms/linux64GccDPInt32Opt/bin/foamMultiRun"

My solver is running for a while and then it throws this error!



I have attached my whole sample here: case2-proper.zip


Would be helpful If someone let me know where I am going wrong! Thanks in advance!


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[shubhamkv1]

Hello,
I am encountering a similar problem of a negative temperature. Will you please help me.

[kristinemidtbo]

Hi!

Did any of you manage to solve the problem? I'm facing the same problem.

[shubhamkv1]

It is mainly due to mesh issues. In my case refining mesh worked out.