Fig. 9.
SYE at 1,500 μs compared with several models using the combined Co-Optima and modified KM2 surface mechanisms. “Exp” is experimental results, and “Sim” is simulation results. Sim collision efficiency (CE)-0.5 is a modified version of the surface mechanism with pyrene as the largest PAH and collision efficiency of 0.5. The basemech found in the ethylene figure are the original KM2 mechanisms (gas and surface mechanisms). SYE measurement and model uncertainties are 10% and 50%, respectively.