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June 11, 2015, 06:07 |
Temperature (T) reactingFoam is diverging
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#1 |
New Member
Jesse Thomas
Join Date: Jun 2015
Posts: 2
Rep Power: 0 |
Hi All,
I am relatively new to OpenFOAM, and am trying to use reactingFoam with reactions turned off to simulate gas spread. My setup is modelled off a real wind tunnel experiment where a constand wind is injected in the positive x direction at 10m/s, and gas enters the domain through a smoke-stack attached to a building at 100m/s. When I set the simulation running with an adaptive deltaT, the time-step is adjusted to be increasingly small to the point the simulation will never seem to finish. When I set deltaT to be fixed, temperature seems to diverge and repeatedly get the following warning: --> FOAM Warning : From function janafThermo<EquationOfState>::limit(const scalar T) const in file /home/openfoam/OpenFOAM/OpenFOAM-2.3.1/src/thermophysicalModels/specie/lnInclude/janafThermoI.H at line 108 attempt to use janafThermo<EquationOfState> out of temperature range 200 -> 5000; T = 65.5492 Any help or suggestion anyone can provide would be immensely helpful! Thanks! |
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Tags |
adaptive-time stepping, divergence temp, gas dispersion, reactingfoam |
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