Influence of O(v)+N=NO+O on NO Formation in One-Dimensional Air Nozzle Flow

Reduction of State-to-State to Macroscopic Models for Hypersonics

“…These chain reactions are the preferential channel to N 2 formation, reducing the contribution of N+N direct recombination in high energy states and resulting in the depletion of the tail of the vibrational distribution of N 2 [50]. In this case the NO formation comes mainly from intermediate levels of N 2 .…”

State-to-state description of reacting air flows behind shock waves

“…(15) for NO vibrational level populations only one equation for the number density of NO molecules should be considered. This assumption is often accepted in calculations of different air flows [37,22,23,25] taking into account a small part of NO molecules in the air mixture under considered conditions. The influence of NO vibrational excitation on nozzle air flow parameters is shown in [25].…”

“…In this case gas dynamic equations in the Euler or Navier-Stokes approximations are coupled to the equations for vibrational level populations of different chemical species and atomic concentrations. This approach received much attention during two last decades for numerical simulations of different flows of air components such as near re-entering bodies [16,17], behind shock waves [18][19][20], in nozzles [21][22][23][24][25], in a boundary layer [26,27] and in a shock layer near re-entering bodies [28], in a shock tunnel nozzle and behind a shock wave in its test section [29]. However, in the majority of papers only two-component mixtures are considered in the state-to-state flow simulations taking into account vibration-dissociation coupling.…”

Non-Intrusive Characterization and Numerical Investigation on a Mach 10 Ionized Air Flow

“…In particular we observe a reforming of nitrogen oxide after the throat (see also ref. [16][17][18][19] ) due to non-equilibrium vibrational distributions and the reforming of atomic and molecular oxygen ions. In Fig.…”