global or detailed reaction mechanism

- December 11, 2019 at 5:21 am
  
  micro
  Subscriber
  
  hello everyone
  
  i am trying to study H2-O2 combustion in a micro combustor with a 9 species 19 reactions mechanism using Fluent
  
  plz refer to the file attached
  
  doing the simulation with global reaction was giving outerwall temp of around 1300K but with this mechanism its reaching only 900 K
  
  plz let me know do the values of the constants ie...activation energy etc have to be given as such as is given in this mechanism or do i need to do some conversion
  
  also what could be the cause for this temp dip
  
  i have k-epsilon turbulence model and eddy dissipation concept
  
  TIA