Dear CFD/combustion colleagues,

I'm trying to use PREMIX code from CHEMKIN II package in a freely propagating flame configuration + hydrogen chemistry.

Question: How one sets appropriatelly the initial guesses for the product and intermediate species composition? The same with the temperature profile? Does one has to specify intermediate species at all or program handles such situations alone, without user supplied input?

So, if someone of you uses PREMIX code, please give some short hints on upper questions. Thak you!

When computing chemically reacting flow, if the chemical reaction scheme can spontaneously produce all species, then you need not to prescrible the intermediate speices. However, in some cases, you need to specify intermediate species when there are no reaction chanels to a species. Specify a very small number of it, say, mass fraction of 10^_{-11}.

I tried it that way in meantime, and it seems to work - just as you said! Thanks for info, anyway.

Regards