Non-equilibrium Reaction Rates in Air Flows Behind Shock Waves. State-to-state and Three-temperature Description

O. Kunova, E. Nagnibeda, I. Sharafutdinov

Research output

Abstract

Non-equilibrium reaction rates in the flows of the five-component air mixture N2/O2/NO/N/O in the relaxation zone behind shock waves are studied on the basis of the state-to-state, three-temperature and one-temperature kinetic theory approaches. State-dependent rate coefficients for N2 and O2 dissociation and Zeldovich exchange reactions are averaged using 1) state-to-state vibrational distributions, 2) two-temperature Treanor distributions and 3) thermal equilibrium distributions. Variation of global reaction rate coefficients obtained in different approaches along the relaxation zone is studied numerically for free stream Mach number M = 13 and differences between reaction rate coefficients found in the frame of the state-to-state and more simple kinetic models are evaluated.
Original languageEnglish
Pages (from-to)150005
JournalAIP Conference Proceedings
Volume1786
DOIs
Publication statusPublished - 2016

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