hybrid initialization and standard initialization
 

Hi all,

I am using fluent to do a combustion simulation with imported CHEMKIN gas phase and surface mechanism files. After initialization , I patched a 1600K temperature to the whole computation domain to 'ignite' mixture. I found a phenomenon that confuses me a lot.

That is when I use hybrid initialization, then the maximum temperature will drop all the way down to room temperature like reactions never happen.

however, if I use standard initialization, then temperature would rise to a not very reasonable high temperature and the tempeture will keep at this high level no matter how many iterations I run.

I am wondering why would this happen？
why would initialiation method makes a difference ?

Best regards
weiqiang