THERMAL SCIENCE

International Scientific Journal

Authors of this Paper

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Yanwei Zhai

,

Weilin Xu

,

Jing Luo

,

Qi Zhang

EXPERIMENTAL STUDY ON THE EFFECT OF A DEFORMABLE BOUNDARY ON THE COLLAPSE CHARACTERISTICS OF A CAVITATION BUBBLE

ABSTRACT
Cavitation phenomena widely exist in many fields such as medical treatment, chemical engineering, and hydraulic engineering. The boundary properties have a great influence on the collapse characteristics of a cavitation bubble. The interaction between a cavitation bubble and a boundary of different properties is an important part in the cavitation erosion mechanism. In this paper, cavitation bubbles under in-water pulse discharge and cavitation erosion under ultrasonic vibration were used to study the effect of a deformable boundary on the collapse characteristics of a cavitation bubble, which reveals the cavitation-resistance performance of different materials on the macroscopic scale. The main experimental results showed that on a deformable boundary, the cavitation bubble does not collapse toward the boundary in the later collapse stage compared with on the rigid boundary. The collapse process of the cavitation bubble is aggravated on the deformable boundary. In the condition of same cavitation strength, the cavitation's erosion loss amount on the rigid boundary material is much higher than that on the deformable boundary material. The experimental conclusions have an important reference value for the development of cavitation erosion prevention and the exploration of cavitation-resistance materials.
KEYWORDS
cavitation bubble, micro-jet, deformable boundary, cavitation erosion, collapse characteristics, bubble electrospinning
PAPER SUBMITTED: 2018-02-28
PAPER REVISED: 2018-04-17
PAPER ACCEPTED: 2018-04-22
PUBLISHED ONLINE: 2019-09-14
DOI REFERENCE: https://doi.org/10.2298/TSCI1904195Z
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2019, VOLUME 23, ISSUE Issue 4, PAGES [2195 - 2204]
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Experimental study on the effect of a deformable boundary on the collapse characteristics of a cavitation bubble

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