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rhoCentralFoam - kOmegaSST - Floating point exception |
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December 8, 2015, 13:24 |
rhoCentralFoam - kOmegaSST - Floating point exception
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#1 |
New Member
Join Date: Nov 2015
Posts: 2
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Hello everyone,
I don't really have a single question but I am faced with a simulation problem I haven't been able to solve, so I hope someone here can help me. I am no CFD expert but for my master thesis in mechanical engineering I have to simulate then build a linear aerospike nozzle to accelerate high pressure air to super sonic speed. For the simulation I created a mesh using gmsh, imported it to foam and I am using the rhoCentralFoam solver with the kOmega turbulence model. The simulation starts "fine" but crashes after 6 microseconds... The error log I get is this: Code:
#0 Foam::error::printStack(Foam::Ostream&) at ??:? #1 Foam::sigFpe::sigHandler(int) at ??:? #2 ? in "/lib/x86_64-linux-gnu/libc.so.6" #3 Foam::hePsiThermo<Foam::psiThermo, Foam::pureMixture<Foam::sutherlandTransport<Foam::species::thermo<Foam::hConstThermo<Foam::perfectGas<Foam::specie> >, Foam::sensibleInternalEnergy> > > >::calculate() at ??:? #4 Foam::hePsiThermo<Foam::psiThermo, Foam::pureMixture<Foam::sutherlandTransport<Foam::species::thermo<Foam::hConstThermo<Foam::perfectGas<Foam::specie> >, Foam::sensibleInternalEnergy> > > >::correct() at ??:? #5 ? at ??:? #6 __libc_start_main in "/lib/x86_64-linux-gnu/libc.so.6" #7 ? at ??:? Floating point exception (core dumped) Here is a link to the whole simulation case. I copy/pasted the error log from the terminal at the end of the "Log" file. The "spike26deg_mm.geo" and "spike26deg_mm.msh" are respectively the geometry and mesh file from GMSH. I set a write frequency of 1e-06 second because I wanted to see what was "happening" before the crash of the simulation. https://www.dropbox.com/sh/qd2iz7ifd...GP8kYkcxa?dl=0 You should be able to run the sim just like I did and toy around with the initial and boundary conditions. The inlet pressure is pretty high (6 atmospheres) but that's not the problem since the same problem occurs with 2 atmospheres. If you want any more details, feel free to ask. I will post any breakthrought I get. Thanks! DGW Last edited by DGW; December 9, 2015 at 11:38. Reason: error in the turbulence model used. |
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September 1, 2016, 08:45 |
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#2 |
New Member
larmes
Join Date: Aug 2016
Posts: 26
Rep Power: 10 |
did you solve the issure?
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Tags |
aerospike, floating point exception, komegasst, rhocentralfoam, super sonic |
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