The mean rates of combustion of nuclei, 
, and soot particles, 
are calculated from the fuel consumption
reaction rate, 
in [kg/m3/s], as:
 | (7–146) |
 | (7–147) |
This is equivalent to posing the same assumptions to nuclei and soot particles combustion that were made for fuel consumption. For example, when the Eddy Dissipation model is applied for the fuel consumption reaction, combustion of nuclei and soot particles is assumed to operate at the fast chemistry limit. No special model for turbulence effects is required for the nuclei and soot combustion rates as this is already accounted for in the computation of the fuel reaction rate.