The absorption of ultrasound in a fluid by small obstacles of spherical form

• Autorzy: Czyż H. , Pop T. , Szczepaniak A. , Ściuk W.
• Języki publikacji: EN

Abstrakty

EN

The presented study involves the problem of acoustic energy absorbed by aerosols. The aim of this paper is to present results of the valuation of ultrasound energy absorption general coefficient in the dispersions (aerosols). Aerosol particle is an obstacle for acoustic wave propagating and to surmount of which some energy of the medium vibrating is lost. Aerosol particle results in both acoustic energy scattering and its absorption. Besides, there are heat losses connected with periodic variation of the medium temperature. In this connection propagation of acoustic wave in the aerosol is related to decrease in wave intensity to more extent than in propagating a wave in a pure gaseous medium.

• Wydawca: Polskie Towarzystwo Akustyczne. Oddział Gdański
• Czasopismo: Hydroacoustics
• Rocznik: 2010
• Tom: Vol. 13
• Strony: 53--60
• Opis fizyczny: Bibliogr. 8 poz., rys.

Twórcy

autor

Czyż H.

autor

Pop T.

autor

Szczepaniak A.

autor

Ściuk W.

• Rzeszow University of Technology, The Faculty of Mathematics and Applied Physics , Chair of Physics, 35-959 Rzeszow, Wincentego Pola 2, Poland,

Bibliografia

• [1] H. Czyż , Dispersed phase acoustics, (in polish), Rzeszow University of Technology Press p. 87, Rzeszow 2003
• [2] H. Czyż, T. Markowski, Applications of dispersed phase acoustics, Archives of Acoustics, Vol. 31, No 4, 59 – 64, 2006.
• [3] P. S. Epstein, R. R. Karhart, The absorption of sound in suspensions and emulsions, JASA, Vol. 25, No 3, 553 – 565, 1993.
• [4] L. Landau, E. M. Lifshits, Fluid mechanics, Pergamon Press, p. 121, 1987.
• [5] E. P. Mednikov, Acoustic coagulation and precipitation of aerosols, Consultants Bureau, New York, p. 91, 1966.
• [6] Rayleigh Lord (J. W. Strutt), Theory of sound, Mac Millan, London, Vol.1. p. 254, 1955.
• [7] C. J. T. Sewell, The extinction of sound in a viscous atmosphere by small obstacles of cylindrical and spherical form, Philos. Trans. Roy. Soc. Amer., 210, N 465, 239 – 270, 1910.
• [8] A. J. Zuckerwar, H. E. Bass, L. C. Sutherland, Atmospheric absorption of sound: update, J. Acoust. Soc. Am., Vol. 88 (4), pp. 2019 – 2021, 1990.