title: Modeling of state-to-state oxygen kinetics behind reflected shock waves
metadata.name: dc.contributor.author
metadata.value: Kravchenko, Denis S.
metadata.lang: -
metadata.name: dc.contributor.author
metadata.value: Kustova, Elena V.
metadata.lang: -
metadata.name: dc.contributor.author
metadata.value: Melnik, Maksim Yu.
metadata.lang: -
metadata.name: dc.date.accessioned
metadata.value: 2022-10-19T20:15:16Z
metadata.lang: -
metadata.name: dc.date.available
metadata.value: 2022-10-19T20:15:16Z
metadata.lang: -
metadata.name: dc.date.issued
metadata.value: 2022-09
metadata.lang: -
metadata.name: dc.identifier.citation
metadata.value: Kravchenko D. S., Kustova E. V., Melnik M.Yu. Modeling of state-to-state oxygen kinetics behind reflected shock waves. Vestnik of Saint Petersburg University. Mathematics. Mechanics. Astronomy, 2022, vol. 9 (67), issue 3, pp. 426–439. https://doi.org/10.21638/spbu01.2022.304 (In Russian)
metadata.lang: en_GB
metadata.name: dc.identifier.other
metadata.value: https://doi.org/10.21638/spbu01.2022.304
metadata.lang: -
metadata.name: dc.identifier.uri
metadata.value: http://hdl.handle.net/11701/38285
metadata.lang: -
metadata.name: dc.description.abstract
metadata.value: A coupled problem of gasdynamics, vibrational relaxation, and dissociation in the flow
  of oxygen behind reflected shock waves is studied. The detailed state-to-state kinetic approach
  is used, which is based on a coupled solution of the momentum and energy conservation
  equations with the balance equations for molecular vibrational state populations and
  concentrations of oxygen atoms. Initial conditions corresponding to recent experiments in
  shock tubes are considered. For different models of physicochemical processes, a comparison
  is made with experimental data; varying the model parameters yields satisfactory agreement
  of all gas-dynamic parameters with the measured ones. The key feature of the proposed
  approach is the allowance for partial vibrational-chemical relaxation in the time interval
  between the incident and reflected shock waves. When relaxation between the shocks is
  not frozen, the reflected shock wave propagates through a vibrationally nonequilibrium
  gas, which significantly affects kinetics and gas dynamics. Accounting for partial relaxation
  ensures good agreement between the pressure calculated behind the front of the reflected
  shock wave and the pressure measured in the experiment. On the other hand, comparison
  with the vibrational temperature calculated indirectly from spectroscopic experimental data
  under the assumption of frozen relaxation shows noticeable differences near the shock
  wave front. We conclude that the technique for extracting gas-dynamic parameters from
  spectroscopic data has to be improved by taking into account vibrational excitation before
  the reflected shock wave.
metadata.lang: en_GB
metadata.name: dc.description.sponsorship
metadata.value: The work is supported by Saint Petersburg State University (project ID 84912260).
metadata.lang: en_GB
metadata.name: dc.language.iso
metadata.value: ru
metadata.lang: en_GB
metadata.name: dc.publisher
metadata.value: St Petersburg State University
metadata.lang: en_GB
metadata.name: dc.relation.ispartofseries
metadata.value: Vestnik of St Petersburg University. Mathematics. Mechanics. Astronomy;Volume 67; Issue 3
metadata.lang: -
metadata.name: dc.subject
metadata.value: vibrational relaxation
metadata.lang: en_GB
metadata.name: dc.subject
metadata.value: dissociation
metadata.lang: en_GB
metadata.name: dc.subject
metadata.value: state-to-state kinetics
metadata.lang: en_GB
metadata.name: dc.subject
metadata.value: oxygen
metadata.lang: en_GB
metadata.name: dc.subject
metadata.value: reflected shock wave
metadata.lang: en_GB
metadata.name: dc.title
metadata.value: Modeling of state-to-state oxygen kinetics behind reflected shock waves
metadata.lang: en_GB
metadata.name: dc.type
metadata.value: Article
metadata.lang: en_GB
resources.filename: 426-439.pdf
resources.url: https://dspace.spbu.ru/bitstream/11701/38285/1/426-439.pdf
resources.format: Adobe PDF
resources.size: 732,4 kB