Measurement of acoustic wave phase velocity by Fourier method in gas-liquid medium

V. G. Gasenko, R. S. Gorelik, V. E. Nakoryakov, L. S. Timkin

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Abstract

Results of measuring the phase velocity of weakly nonlinear waves in a gas-liquid mixture by the Fourier method are presented. The method is based on expansion of time signals, taken from two closely spaced pressure gages in propagation of a single finite pressure pulse, into Fourier series and calculation of the phase shift over the entire frequency series. The method was previously tested in a numerical experiment with the use of the known Korteweg–de Vries equation model. The results of phase velocity measurements show that the method is in good agreement with the theory in a frequency range where the phase incursion is under 2π. The proposed method makes it possible to reconstruct all parameters of polydisperse gas-liquid medium, including those of Landau attenuation analog, by the frequency dependence of the measured phase velocity.

Original languageEnglish
Pages (from-to)330-334
Number of pages5
JournalJournal of Engineering Thermophysics
Volume24
Issue number4
DOIs
Publication statusPublished - 1 Oct 2015
Externally publishedYes

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ASJC Scopus subject areas

  • Environmental Engineering
  • Modelling and Simulation
  • Condensed Matter Physics
  • Energy Engineering and Power Technology

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