An extension of CVDV model to Zeldovich exchange reactions for hypersonic non-equilibrium air flows (Q1288873)

A new preferential vibration-dissociation-exchange reaction coupling model -- labelled CVDEV -- resulting from an extension of the well-known Treanor-Marrone CVDV model, has been developed to take into account the coupling between the vibrational excitation of \(N_2\) and \(O_2\) molecules and two Zeldovich exchange reactions. We derive analytical expressions for the exchange reaction coupling factors and for the average vibrational energy lost (or gained) by a molecule through an exchange reaction. The influence of such a coupling is shown by means of numerical simulations of hypersonic air flows through normal and bow shock waves.