Hostname: page-component-cd9895bd7-lnqnp Total loading time: 0 Render date: 2024-12-20T06:19:24.975Z Has data issue: false hasContentIssue false
  • English
  • Français

Acoustic emulsification. Part 2. Breakup of the large primary oil droplets in a water medium

Published online by Cambridge University Press:  19 April 2006

M. K. Li  and
H. S. Fogler
M. K. Li
Affiliation:
Department of Chemical Engineering, University of Michigan, Ann Arbor Present address: General Electric Corporate Research and Development, Schenectady, New York.
H. S. Fogler
Affiliation:
Department of Chemical Engineering, University of Michigan, Ann Arbor
Get access Rights & Permissions [Opens in a new window]

Abstract

A theoretical model is presented for the liquid-liquid emulsification phenomenon based on the deformation and breakup of an oil droplet exposed to a cavitation shock wave generated by an acoustic field. The model predicts a relationship between the Ohnesorge number and the critical Weber number ratio for long acoustic irradiation times. At short irradiation times, the mean particle size and variance decrease with increasing time of acoustic irradiation. The results show remarkable agreement when compared with results obtained from the studies on liquid droplets exposed to shock impact from a gas stream. The mechanism for acoustic emulsification is that large oil droplets originally formed from the instability oil-water interface are disintegrated into smaller ones by the cavitation until a critical size, characteristic of the particular oil-water system, is reached.

Type
Research Article
Information
Journal of Fluid Mechanics , Volume 88 , Issue 3 , 13 October 1978 , pp. 513 - 528
Copyright
© 1978 Cambridge University Press

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Benjamin, T. B. 1958 2nd Symp. on Naval Hydrodyn. ACR-38 (ed. R. D. Cooper), p. 207, Office of Naval Research, Washington, D.C.Google Scholar
Brodkey, R. S. 1967 The Phenomena of Fluid Motions. Addison-Wesley.Google Scholar
Chiu, H. H. 1969 Dynamics of Deformation of Liquid Drops, Aerospace Research Laboratories Rep. no. 69–0065.Google Scholar
Fogler, H. S. 1971 Chem. Engng Prog. Symposium Series, vol. 67, no. 109, p. 1.Google Scholar
Flynn, H. G. 1964 In Physical Acoustic, vol. IB (ed. W. P. Mason), p. 57. Academic Press.Google Scholar
Haas, F. C. 1964 A.I.Ch.E. J. 10, 920.Google Scholar
Hanson, A. R., Domich, E. G. & Adams, H. S. 1963 Phys. Fluids 6, 1070.Google Scholar
Hinze, J. O. 1948a Appl. Sci. Res. A1, 263.Google Scholar
Hinze, J. O. 1948b Appl. Sci. Res. A1, 273.Google Scholar
Hinze, J. O. 1955 A.I.Ch.E. J. 1 289.CrossRefGoogle Scholar
Lamb, H. 1945 Hydrodynamics. Dover.Google Scholar
Li, M. K. 1976 Ph.D. thesis, The University of Michigan.Google Scholar
Li, M. K. & Fogler, H. S. 1978 J. Fluid Mech. 88, 499.Google Scholar
Littaye, G. 1943 C.R. Acad. Sci. Paris 217, 340.Google Scholar
Rozenberg, L. D. 1971 High Intensity Ultrasonic Field. Plenum.CrossRefGoogle Scholar
Sirotyuk, M. G. 1966a Sov. Phys. Acoust. 12, 67.Google Scholar
Sirotyuk, M. G. 1966b Sov. Phys. Acoust. 12, 199.Google Scholar
Sirotyuk, M. G. 1971 High Intensity Ultrasonic Field (ed. L. D. Rozenberg). Plenum.Google Scholar
Taylor, T. D. & Acrivos, A. 1964 J. Fluid Mech. 18, 466.Google Scholar
Volynski, M. S. 1948 C. R. (Doklady), Acad. Sci. U.S.S.R. 62, 301.Google Scholar