title: Heat and radiative fluxes in strongly nonequilibrium flows behind shock waves
metadata.name: dc.contributor.author
metadata.value: Istomin, Vladimir A.
metadata.lang: -
metadata.name: dc.contributor.author
metadata.value: Kustova, Elena V.
metadata.lang: -
metadata.name: dc.contributor.author
metadata.value: Prutko, Kirill A.
metadata.lang: -
metadata.name: dc.date.accessioned
metadata.value: 2022-12-27T16:25:53Z
metadata.lang: -
metadata.name: dc.date.available
metadata.value: 2022-12-27T16:25:53Z
metadata.lang: -
metadata.name: dc.date.issued
metadata.value: 2022-12
metadata.lang: -
metadata.name: dc.identifier.citation
metadata.value: Istomin V.A., Kustova E.V., Prutko K.A. Heat and radiative fluxes in strongly nonequilibrium flows behind shock waves. Vestnik of Saint Petersburg University. Mathematics. Mechanics. Astronomy, 2022, vol. 9 (67), issue 4, pp. 705–719. https://doi.org/10.21638/spbu01.2022.412 (In Russian)
metadata.lang: en_GB
metadata.name: dc.identifier.other
metadata.value: https://doi.org/10.21638/spbu01.2022.412
metadata.lang: -
metadata.name: dc.identifier.uri
metadata.value: http://hdl.handle.net/11701/38728
metadata.lang: -
metadata.name: dc.description.abstract
metadata.value: State-to-state and two-temperature theoretical models for high-temperature strongly nonequilibrium
  reacting and radiating air flows are developed in the framework of the generalized
  Chapman—Enskog method. In the theoretical approach, the sets of governing
  equations for coupled fluid dynamics, chemical kinetics, internal energy transitions and
  radiation are derived; the algorithms for the calculation of state-resolved transport coefficients
  are developed and implemented. The proposed models are applied for 1-D simulations
  of shock waves in air under high-temperature conditions observed in flight experiments. Nonequilibrium mixture composition, temperatures and pressure profiles are obtained and
  compared for various models of chemical reaction rate coefficients. Flow variables strongly
  depend on both the kinetic-theory approach and chemical reaction model; species molar
  fractions and temperature show significantly different behaviour for the state-to-state and
  two-temperature simulations. Transport properties and radiative fluxes are calculated as
  functions of the distance from the shock front. It is found that diffusion provides a major
  contribution to the total energy flux whereas the role of heat conduction is weak due to
  the compensation effects. It is shown that under considered conditions, two-temperature
  models are not applicable for correct predictions of radiative heating.
metadata.lang: en_GB
metadata.name: dc.description.sponsorship
metadata.value: The work is supported by the Russian Science Foundation (project no. 22-11-00078).
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 9 (67); Issue 4
metadata.lang: -
metadata.name: dc.subject
metadata.value: state-to-state kinetics
metadata.lang: en_GB
metadata.name: dc.subject
metadata.value: electronic excitation
metadata.lang: en_GB
metadata.name: dc.subject
metadata.value: transport coefficients
metadata.lang: en_GB
metadata.name: dc.subject
metadata.value: heat flux
metadata.lang: en_GB
metadata.name: dc.subject
metadata.value: radiative flux
metadata.lang: en_GB
metadata.name: dc.title
metadata.value: Heat and radiative fluxes in strongly nonequilibrium flows behind shock waves
metadata.lang: en_GB
metadata.name: dc.type
metadata.value: Article
metadata.lang: en_GB
resources.filename: 705-719.pdf
resources.url: https://dspace.spbu.ru/bitstream/11701/38728/1/705-719.pdf
resources.format: Adobe PDF
resources.size: 2,11 MB