Cavitation near the oscillating piezoelectric plate in water

TL;DR

This paper investigates how oscillating piezoelectric plates induce cavitation in water, creating bubble layers near surfaces, and explores the relationship between oscillation parameters and cavitation development for potential applications.

Contribution

It introduces a method to generate bubble-filled layers near walls using oscillating piezoelectric plates and analyzes cavitation conditions in the boundary layer.

Findings

Cavitation occurs under specific oscillation conditions.

A relationship between oscillation parameters and cavitation is established.

Potential applications of cavitation control are discussed.

Abstract

It is known that gas bubbles on the surface bounding a fluid flow can change the coefficient of friction and affect the parameters of the boundary layer. In this paper, we propose a method that allows us to create, in the near-wall region, a thin layer of liquid filled with bubbles. It will be shown that if there is an oscillating piezoelectric plate on the surface bounding a liquid, then, under certain conditions, cavitation develops in the boundary layer. The relationship between the parameters of cavitation and the characteristics of the piezoelectric plate oscillations is obtained. Possible applications are discussed.