Virial coefficients from cubic KZK

• Autorzy: Leble S. , Vereshchagina I.
• Konferencja: Proceedings of the 2 nd EAA International Symposium on Hydroacoustics 24-27 May 1999, Gdańsk-Jurata POLAND
• Języki publikacji: EN

Abstrakty

EN

We start from the cubic KZK equation for ultrasonics beam that accounts first, second and third powers of density in pressure Taylor series expansion. In a condition of moderate amplitude and nearfield one can use approximate solutions provided by perturbation method including terms resonant to the multiple frequencies on a transducer. We consider three resonant harmonics within Rayleigh distance range. The second and third harmonics averaged over the beam cross-section are expressed in terms of some standard integrals and nonlinear constants. Fourier transforms of a signal on a receiver are equalized to the results of the evaluation that give equations for the non-linear constants determination. This in tum allows to compute constants B/A and C/A of the equation of state (virial expansion).

• Wydawca: Polskie Towarzystwo Akustyczne. Oddział Gdański
• Czasopismo: Hydroacoustics
• Rocznik: 1999
• Tom: Vol. 2
• Strony: 251--256
• Opis fizyczny: Bibliogr. 12 poz., tab.

Twórcy

autor

Leble S.

• Technical University of Gdańsk, ul. G. Narutowicza 11112, 80-952 Gdańsk, POLAND
• Kaliningrad State University, Al.Nevskij str. 14,236041 Kaliningrad, RUSSIA

autor

Vereshchagina I.

• Kaliningrad State University, Al.Nevskij str. 14,236041 Kaliningrad, RUSSIA

Bibliografia

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