Detonations with lateral strain rate: piece-wise laminar detonations
Combustion and Flame 215 (2020) 437–457
We now show that unstable detonations with long reaction zones, such as H2/O2/Ar, can be very well predicted by the ZND model, which neglects the cellular structure.
This may come as a surprise, since the cellular structure takes very high amplitude perturbations, and the transverse waves are among the strongest of all detonations, i.e., they are reactive.
The good agreement with ZND predictions is likely because of their very long reaction zones, as compared to the induction zones, as shown by their ZND profiles: