Talk:Tut reactingFoam firstTutorial

1 adaption to OpenFOAM-1.6

It is possible to use the tutorial in OpenFOAM-1.6 with some minor changes. I will try to make a list soon, starting here:

a "g"-file is needed in the /constant directory, which can be used from the new aachenBomb-tutorial
file "constant/chemistryProperties" --> chemistrySolver should be "ode" instead of "ODE", and there should be a "odeCoeffs"-dictionary instead of "ODECoeffs", and I added the line "psyChemistryModel ODEChemistryModel<gasThermoPhysics>;" after the header

--Aortwein 14:06, 4 December 2009 (UTC)

Thanks for the tutorial, however, I am getting the following error in the third time step, and have not been able to find the problem:

--> FOAM FATAL ERROR : attempt to use janafThermo<equationOfState> out of temperature range 200 -> 5000; T = 5000.92#0

Any suggestions or a fix would be very appreciated. Thanks again. ~E

a possibility could be to change the oxygen in the lowerInlet (in the the 0/O2 file) from 1.0 to (say) 0.9 or less and the nitrogen in the lowerInlet ( 0/N2) from 0.0 to 0.1 to cool down the reaction
note: my suggestion is not validated, since I did not have that problem yet, but the problem is also discussed here: at cfd-online.com --Aortwein 15:29, 4 December 2009 (UTC)
as far as I can see, the main problem lies in the "T" file in the "0"-Directory. Here, the boundary condition for "outlet" is set to "type fixedValue" with a value of 800. That should be changed to "type zeroGradient", afterwards it should work. If that change is not done, obviously that boundary condition is making problems as soon as a temperature higher than 800 K reaches the outlet. --Aortwein 10:31, 16 December 2009 (UTC)