Cavitation Phenomena In Thin Films Of Newtonian And
Non-Newtonian Fluids Due To Rapid Bubble Expansion
Author(s)
P.R. Williams, R.L. Williams & A. Al-Hussany
Abstract
Cavitation phenomena in thin films of
Newtonian and non-Newtonian fluids due to
rapid bubble expansion
P.R. Williams, R.L. Williams and A. Al-Hussany
Centre for Complex Fluids Processing,
School of Engineering, University of Wales Swansea, UK
Abstract
We report theoretical work in which the growth of a cavitation bubble within a
thin, stretching film of liquid is considered. Numerical simulations of cavitation
bubble dynamics are used to explain how the growth of a cavity within a
stretching liquid film may result in the development of sufficiently large negative
pressures (or tension) within the liquid to damage adjacent surfaces. The results
of this study are discussed in terms of the possible consequences of a rapid
expansion of a vaporous cavitation bubble in samples of healthy (non-
Newtonian) and pathological (essentially Newtonian) synovial fluid. Contrary to
previous indications in the literature, non-Newtonian (specifically, shearthinning)
behaviour is found to result in significantly
Keywords
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