TY - JOUR

T1 - Non-equilibrium Reaction Rates in Air Flows Behind Shock Waves. State-to-state and Three-temperature Description

AU - Kunova, O.

AU - Nagnibeda, E.

AU - Sharafutdinov, I.

PY - 2016

Y1 - 2016

N2 - 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.

AB - 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.

U2 - http://dx.doi.org/10.1063/1.4967646

DO - http://dx.doi.org/10.1063/1.4967646

M3 - Article

VL - 1786

SP - 150005

JO - AIP Conference Proceedings

JF - AIP Conference Proceedings

SN - 0094-243X

ER -