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Investigation of cavitation bubble dynamics by fiber‐coupling optical beam deflection technique
Author(s) -
Xu Rongqing,
Zhao Rui,
Cui Yiping,
Lu Jian,
Ni Xiaowu
Publication year - 2008
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.23491
Subject(s) - bubble , cavitation , jet (fluid) , deflection (physics) , optics , laser , laser ablation , microwave , mechanics , materials science , physics , quantum mechanics
The bubble dynamics are investigated experimentally by means of a fiber‐optic force sensor based on optical beam deflection (OBD). This sensor is applied to detect the laser‐induced plasma ablation force and liquid‐jet impact during the cavitation bubble collapse. Some remarkable features such as liquid‐jet formation threshold and a variation of liquid‐jet appearance time are pointed out in this work. The experiment results indicate that once laser intensity goes beyond the liquid‐jet formation threshold, a high‐speed wall‐directed liquid‐jet develops and the appearance time of the liquid‐jet increases with laser energy. Combining the OBD detection principles, the pressure and velocity of liquid‐jet are calculated. The results are discussed with respect to the dynamics of cavitation bubble important for corresponding research fields. © 2008 Wiley Periodicals, Inc. Microwave Opt Technol Lett 50: 1767–1770, 2008; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.23491