On an acoustic method for the determination of the density of a liquid as a function of pressure

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Authors

  • Joachim GMYREK Institute of Physics, Silesian Technical University, Poland

Abstract

On the basis of Schaaffs paper and Gruneisen's theory it has been shown that the Rao expression at constant temperature does not depend on the pressure. It results from the stability of the Rao-Schaaffs expression that it is possible to determine the density of a liquid as a function of pressure by the intermediary of quantities measured exclusively under normal pressure. The method provides a better agreement of the calculated values with experimental ones than do other methods.

References

[1] J. WEHR, An ultrasonic method for the Determination of the compressibility of a liquid as a function of pressure, IPPT Reports 15/1967 [in Polish].

[2] W. SZACHNOWSKI, An ultrasonic method for measuring the compressibility of liquid fuels and hydraulic and lubricating liquids as a function of pressure and temperature, Doctoral thesis, IPPT PAN, Warszawa 1973 [in Polish].

[3] W. SCHAAFFS, Molekularakustische Abteilung einer Zustandsgleichung fiir Fliissigkeiten, Acustica, 30 (1974).

[4] K. WOŹNICZAK, Sound velocity versus the latent heat of vapourization, Archiwum Akustyki, 7, 3-4, 319-325 (1972) [in Polish].