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2010, 4

S. S. Voronkov

On module of elasticity of viscous heat-conducting gas

language: Russian

received 01.03.2010, published 18.03.2010

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It is established that linear Hooke's law, which connects change of pressure with relative volume deformation, is broken in a stream of viscous and heat-conducting gas with cross-section shift. The formula for the module of volume elasticity, which takes into account energy dissipation and heat exchange, is obtained. It is shown that the amplitude of the module of volume elasticity is proportional to a square of a stream speed and inversely proportional to amplitude and frequency of density perturbance. The results of computing experiment are presented.

Keywords: module of volume elasticity, viscous and heat-conducting gas.

7 pages, 6 figures

Сitation: S. S. Voronkov. On module of elasticity of viscous heat-conducting gas. Electronic Journal “Technical Acoustics”,, 2010, 4.


1. Voronkov S.S. On velocity of sound in viscous gas flow with transverse shift. Electronic Journal «Technical Acoustics»,, 2004, 5.
2. Voronkov S.S. On velocity of sound and transition to turbulence. Electronic Journal «Technical Acoustics»,, 2007, 18.


Sergey S. Voronkov graduated from Leningrad Polytechnic Institute (Russia) in 1979, PhD. Presently he is head of department at Pskov Polytechnic Institute. Scientific area: hydrodynamics, nonlinear acoustics.

e-mail: voronkovss(at)