Bubble Dynamics and Cavitation in Non-newtonian Liquids
نویسندگان
چکیده
Cavitation phenomena play important roles in many areas of science and engineering. The most interesting effect of the non-Newtonian properties of the liquid is the reduction of cavitation damage and noise. This article reviews experimental and theoretical efforts to understand such phenomena. The currently available information favors a description of the observed reduction of cavitation damage caused by a reduction of the pressure inside the bubble at its minimum volume, leading to a weaker shock wave emission during bubble rebound. After a brief historical review, the authors survey the major areas of research: Section 2 describes the dynamics of cavitation bubbles oscillating in a liquid of infinite extent, while Section 3 describes research on the behaviour of bubbles collapsing near rigid walls. Section IV discusses the role of the non-Newtonian properties in determining the cavitation threshold. The review also outlines some directions for future research.
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