TY - JOUR
TI - Experimental study on the effect of a deformable boundary on the collapse characteristics of a cavitation bubble
AU - Zhai Yanwei
AU - Xu Weilin
AU - Luo Jing
AU - Zhang Qi
JN - Thermal Science
PY - 2019
VL - 23
IS - 4
SP - 2195
EP - 2204
PT - Article
AB - 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.