Ultrasonic waves in some biological suspensions and emulsions

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Authors

  • J. LEWANDOWSKI Institute of Fundamental Technological Research, Polish Academy of Sciences, Poland

Abstract

The frequency dependence is established for the propagation velocity and attenuation coefficient of ultrasonic waves in dilute suspensions and emulsions and digital computations are performed for the aqueous emulsion of sunflower oil. The results show that the measurements of the propagation velocity of ultrasonic waves enable us to estimate the volume fraction of the suspended particles of both dilute and highly concentrated suspensions and emulsions. Keywords: suspensions, emulsions, ultrasonic waves, propagation velocity, attenuation coefficient.

References

[1] L. MILLER,A thermodynamic theory of mixtures of fluids, Arch. Rat. Mech. An. 28, 1-39 (1968).

[2] W.B. FULKS, R.B. GUENTHER and E.L. ROETMAN, Equations of motion and continuity for fluid in a porous medium, Acta Mech., 12, 121-129 (1972).

[3] I. KUBIK, A dynamic theory of fluid-porous solid composition I. Motion equations, Arch. Mech. Stos., 37, 231-341 (1985).

[4] A.S. AHUIA, Effect of particle viscosity of propagation of sound in suspensions and emulsions, J. Acous. Soc. Am., 51, 182-191 (1972).