DOI

Bulk viscosity in carbon dioxide is studied using the accurate kinetic theory method. Complex structure of the CO2 molecule and various channels for vibrational relaxation are taken into account while calculating the vibrational relaxation time. It is shown that in the general case, the bulk viscosity coefficient cannot be represented as a sum of independent contributions of rotational and vibrational degrees of freedom. The predicted ratio of bulk and shear viscosity coefficients does not exceed 5 for temperatures lower that 2000â...K. Thus we put in question the widely used assumption about the high ratio of bulk and shear viscosity coefficients in CO2 at low temperature.

Original languageEnglish
Title of host publication31st International Symposium on Rarefied Gas Dynamics, RGD 2018
PublisherAmerican Institute of Physics
Number of pages8
ISBN (Print)9780735418745
DOIs
StatePublished - 6 Aug 2019
Event31st International Symposium on Rarefied Gas Dynamics, RGD 2018 - Glasgow, United Kingdom
Duration: 23 Jul 201827 Jul 2018

Publication series

NameAIP Conference Proceedings
PublisherAmerican Institute of Physics
Number1
Volume2132
ISSN (Print)0094-243X

Conference

Conference31st International Symposium on Rarefied Gas Dynamics, RGD 2018
Country/TerritoryUnited Kingdom
CityGlasgow
Period23/07/1827/07/18

    Scopus subject areas

  • Physics and Astronomy(all)
  • Ecology

ID: 45793903