Cavitating Jet: A Review

Author:  Hitoshi Soyama | Tohoku University
Source:  The Shot Peener magazine, Vol 36, Issue 3, Summer 2022
Doc ID:  2022026
Year of Publication:  2022
Abstract:  
Featured Application: Cavitation peening, Cleaning, Drilling Abstract: When a high-speed water jet is injected into water through a nozzle, cavitation is generated in the nozzle and/ or shear layer around the jet. A jet with cavitation is called a “cavitating jet”. When the cavitating jet is injected into a surface, cavitation is collapsed, producing impacts. Although cavitation impacts are harmful to hydraulic machinery, impacts produced by cavitating jets are utilized for cleaning, drilling and cavitation peening, which is a mechanical surface treatment to improve the fatigue strength of metallic materials in the same way as shot peening.