ON THE TURBULENCE IN A VISCOUS HEAT-CONDUCTING GAS

Authors

  • Sergey Voronkov Institute of Engineering Sciences, Pskov State University (RU)
  • Pavel Safronov Institute of Engineering Sciences, Pskov State University (RU)
  • Alexander Dementiev Institute of Engineering Sciences, Pskov State University (RU)
  • Olga Frolova Institute of Engineering Sciences, Pskov State University (RU)
  • Tatiana Bugaeva Institute of Engineering Sciences, Pskov State University (RU)

DOI:

https://doi.org/10.17770/etr2021vol3.6527

Keywords:

turbulence, viscous heat-conducting gas, coherent vortex structures, vector wave equation, boundary layer, round jet

Abstract

The problem of the emergence of turbulence is one of the unsolved problems of physics and technology of the 20th century. It is noted that in order to understand the emergence of turbulence in a viscous heat-conducting gas, it is necessary to take into account the compressibility of the medium. A definition of turbulence in a viscous heat-conducting gas is given, which is a cyclically repeating process of the emergence and decay of coherent vortex structures described by a vector wave equation. The decay of vortex structures is accompanied by an explosive, asymptotic increase in pressure pulsations, which triggers a new cycle of turbulence generation. The emergence and decay of coherent vortex structures in the boundary layer on a plate and in a round jet is considered.

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Published

2021-06-16

How to Cite

[1]
S. Voronkov, P. Safronov, A. Dementiev, O. Frolova, and T. Bugaeva, “ON THE TURBULENCE IN A VISCOUS HEAT-CONDUCTING GAS”, ETR, vol. 3, pp. 382–386, Jun. 2021, doi: 10.17770/etr2021vol3.6527.