In the comments, I received the following question from the user Tobias Jacobsen (@habahabahabahabahaba):
My answer is: For my tutorial, I took all parameters from the openFoam-/reactingFoam-tutorial because this was the fastest and easiest way to build up the files for the tutorial.is there any chance you could show it with a hydrogen combustion example?
For changing the chemical reaction from methane to hydrogen, you have to change the chemical elements in the directory "0". This should be quite easy. It is more complicated to get the parameters for the directory "constant":
- the file "thermo.compressibleGas" contains Information about molWeights, thermodynamics and transport
- The molWeight is more or less self-explaining (for hydrogen it is 1,00794 g/mol).
- I have no idea why the specific heat capacity cp consists of 6 columns per temperature, probably this is for interpolation.
- The transport parameters As and Ts are totally unknown for me.
- for the "reactions" file, you must know the parameters of the Arrhenius-equation. I did not found any description of the specific Arrhenius-equation used in reactingFoam, but it seems that the Arrhenius-equation is temperature-sensitive.
Question to the Forum: Has anybody an idea where to find ...
- the thermophysical parameters for "thermo.compressibleGas"?
- the parameters of the Arrhenius-equation for reactions with hydrogen?