title: State-specific transport properties of partially ionized flows of electronically excited atomic gases
metadata.name: dc.contributor.author
metadata.value: Istomin, V.A.
metadata.lang: -
metadata.name: dc.contributor.author
metadata.value: Kustova, E.V.
metadata.lang: -
metadata.name: dc.date.accessioned
metadata.value: 2017-02-16T12:56:41Z
metadata.lang: -
metadata.name: dc.date.available
metadata.value: 2017-02-16T12:56:41Z
metadata.lang: -
metadata.name: dc.date.issued
metadata.value: 2017-02-16
metadata.lang: -
metadata.name: dc.identifier.issn
metadata.value: 0301-0104
metadata.lang: -
metadata.name: dc.identifier.uri
metadata.value: http://hdl.handle.net/11701/6011
metadata.lang: -
metadata.name: dc.description.abstract
metadata.value: State-to-state approach for theoretical study of transport properties in atomic gases with excited electronic
  degrees of freedom of both neutral and ionized species is developed. The dependence of atomic
  radius on the electronic configuration of excited atoms is taken into account in the transport algorithm.
  Different cutoff criteria for increasing atomic radius are discussed and the limits of applicability for these
  criteria are evaluated. The validity of a Slater-like model for the calculation of state-resolved transport
  coefficients in neutral and ionized atomic gases is shown. For ionized flows, a method of evaluation for
  effective cross-sections of resonant charge-transfer collisions is suggested. Accurate kinetic theory algorithms
  for modelling the state-specific transport properties are applied for the prediction of transport
  coefficients in shock heated flows. Based on the numerical observations, different distributions over electronic
  states behind the shock front are considered. For the Boltzmann-like distributions at temperatures
  greater than 14,000 K, an important effect of electronic excitation on the partial thermal conductivity and
  viscosity coefficients is found for both neutral and ionized atomic gases: increasing radius of excited
  atoms causes a strong decrease in these transport coefficients. Similarly, the presence of electronically
  excited states with increased atomic radii leads to reduced diffusion coefficients. Nevertheless the overall
  impact of increasing effective cross-sections on the transport properties just behind the shock front under
  hypersonic reentry conditions is found to be minor since the populations of high-lying electronic energy
  levels behind the shock waves are low.
metadata.lang: en_GB
metadata.name: dc.description.sponsorship
metadata.value: This study is supported by the Russian Foundation for Basic Research, project 16-38-60009, and Saint Petersburg State University, project 6.37.206.2016.
metadata.lang: en_GB
metadata.name: dc.language.iso
metadata.value: en
metadata.lang: en_GB
metadata.name: dc.publisher
metadata.value: Elsevier
metadata.lang: en_GB
metadata.name: dc.relation.ispartofseries
metadata.value: 485-486;125-139
metadata.lang: -
metadata.name: dc.subject
metadata.value: Electronic excitation, plasma, state-to-state approach
metadata.lang: en_GB
metadata.name: dc.title
metadata.value: State-specific transport properties of partially ionized flows of electronically excited atomic gases
metadata.lang: en_GB
metadata.name: dc.type
metadata.value: Article
metadata.lang: en_GB
resources.filename: Printed paper Istomin Kustova Chemical Physocs 2017.pdf
resources.url: https://dspace.spbu.ru/bitstream/11701/6011/1/Printed%20paper%20Istomin%20Kustova%20Chemical%20Physocs%202017.pdf
resources.format: Adobe PDF
resources.description: Published paper
resources.size: 1,2 MB