We study experimentally the dynamics of laser-induced cavitation bubbles created inside a narrow gap. The gap height, h , is varied from 15 to 400 microm and the resulting bubble dynamics is compared to a semiunbounded fluid. The cavitation bubbles are created with pulsed laser light at constant laser energy and are imaged with a high-speed camera. The bubble lifetime increases with decreasing ...

Abstract Cavitation generation methods have been used in multifarious directions because of their diversity, and numerous studies discussions conducted on cavitation methods. This study aims to explore the generating mechanism evolution law volume alternate (VAC). In VAC, liquid water is placed an airtight container with a variable volume. As alternately changes, inside continues cavitate. Then...

The identification of cavitation is very important in technical practice for operational and especially economic reasons. article deals with the use another way to measure noise during cavitation. current approach measuring an intensity probe used identification, but it does not immediately address position source a given frequency range. Measurement by acoustic camera entirely common practice,...

The S-shaped hydrofoil is often used in the design of reversible machinery due to its centrally symmetrical camber line. objective this paper study influence cloud cavitation on flow structure and unsteady characteristics lift drag around an via experimental tests numerical simulations. In component, were carried out a tunnel high-speed camera was record details with different numbers. results ...

The laser generation of vapor bubbles around plasmonic nanoparticles can be enhanced through the application of an ultrasound field; a technique referred to as photoacoustic cavitation. The combination of light and ultrasound allows for bubble formation at lower laser fluence and peak negative ultrasound pressure than can be achieved using either modality alone. The growth and collapse of these...

This short review provides the current state-of-the-art of in situ coupling of ultrasound to chemical deposition methods. A synergetic action of the ultrasound and light radiation or electrical fields may result in new powerful methodologies, and these include sonophotodeposition and sonoelectrodeposition processes. The effect of ultrasound is explained on the base of different physical mechani...

Cavitation generation methods have been applied in multifarious directions due to their diversity. And scholars carried out numerous researches and discussions on cavitation methods. The purpose of this study is explore the generating mechanism evolution law volumetric alternate (VAC). In VAC, liquid water placed an airtight container with variable volume. With volume alternately changes, insid...