Non-equilibrium dissociation of nitrogen

Non-equilibrium dissociation of nitrogen

Dissociation rates of molecular nitrogen in electrical discharges have been calculated by solving a system of master equations, including V-V (vibration-vibration), V-T (vibrationtranslation) and e-V (electron-vibration) energy transfers. The results show that the dissociation rates slightly increase with decreasing gas temperature in the temperature range 1 000-2 000 K at the electron temperat...

Numerical Study of Non - Equilibrium Air Dissociation For Calculation of Electron Density in Hypersonic Flow

Quasi-State-Specific QCT Method for Calculating the Dissociation Rate of Nitrogen in Thermal Non-Equilibrium

The dissociation of nitrogen was studied using a quasi-classical trajectory (QCT) analysis in the context of calculating the dissociation rate surface for a dense range of temperatures for use in computational fluid dynamics (CFD) applications. By sampling rovibrational states from a Boltzmann distribution but uniformly sampling the relative speed, the dissociation rate was calculated for trans...

Non-equilibrium Photodissociation Regions: Ionization-dissociation Fronts

We discuss the theory of coupled ionization{dissociation fronts produced when molecular clouds are exposed to < 1110 A radiation from hot stars. A steady, composite structure is developed, which generally includes an ionized outtow away from the cloud, an ionization front, a layer of photodissociated gas, a photodissociation front, and a shock wave preceding the photodissociation front. We show...

Non-equilibrium dissociating nitrogen flow over spheres and circular cylinders

Theoretical results based on the methods of Freeman and Garr & Marrone show that the stand-off distance and flow pattern of non-equilibrium dissociating flow of nitrogen over the front part of a blunt body can be correlated in terms of a single reaction rate parameter s2 taking account of parameters describing the speed, density, dissociation and temperature of the free stream. The density patt...