State-to-state oxygen kinetics behind reflected shock waves: Assessment of different approaches

Kravchenko, D.; Kunova, O.; Kustova, E.; Melnik, M.

doi:10.1063/5.0187393

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2024

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Cited by 4 publications

References 21 publications

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Reflected shock waves in air components and their mixtures: Validation of theoretical models

Kravchenko,

Kunova,

Kustova

et al. 2024

Acta Astronautica

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Reflected shock waves in air components and their mixtures: Validation of theoretical models

Kravchenko,

Kunova,

Kustova

et al. 2024

Acta Astronautica

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Effect of exchange reactions and NO vibrational excitation on shock-heated air component flows

Kravchenko,

Kunova,

Kustova

et al. 2024

Chemical Physics Letters

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Vibrational energy relaxation in shock-heated CO/N2/Ar mixtures

He,

Hong,

Pirani

et al. 2024

The Journal of Chemical Physics

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Experimental and numerical studies were performed on the vibrational energy relaxation in shock-heated CO/N2/Ar mixtures. A laser absorption technique was applied to the time-dependent rovibrational temperature time-history measurements. The vibrational relaxation data of reflected-shock-heated CO were summarized at 1720–3230 K. In shock-tube experiments, the rotational temperature of CO quickly reached equilibrium, whereas a relaxation process was found in the time-dependent vibrational temperature. For the mixture with 1.0% CO and 10.0% N2, the vibrational excitation caused a decrease in the macroscopic thermodynamic temperature of the test gas. In the simulations, the state-to-state (StS) approach was employed, where the vibrational energy levels of CO and N2 are treated as pseudo-species. The vibrational state-specific inelastic rate coefficients of N2–Ar collisions were calculated using the mixed quantum–classical method based on a newly developed three-dimensional potential energy surface. The StS predictions agreed well with the measurements, whereas deviations were found between the Schwartz–Slawsky–Herzfeld formula predictions and the measurements. The Millikan–White vibrational relaxation data of the N2–Ar system were found to have the most significant impact on the model predictions via sensitivity analysis. The vibrational relaxation data of the N2–Ar system were then modified according to the experimental data and StS results, providing an indirect way to optimize the vibrational relaxation data of a specific system. Moreover, the vibrational distribution functions of CO and N2 and the effects of the vibration–vibration–translation energy transfer path on the thermal nonequilibrium behaviors were highlighted.

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State-to-state oxygen kinetics behind reflected shock waves: Assessment of different approaches

Cited by 4 publications

References 21 publications

Reflected shock waves in air components and their mixtures: Validation of theoretical models

Reflected shock waves in air components and their mixtures: Validation of theoretical models

Effect of exchange reactions and NO vibrational excitation on shock-heated air component flows

Vibrational energy relaxation in shock-heated CO/N2/Ar mixtures

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