Next Article in Journal
Effect of Particle Orientation and Porosity on Thermal Conductivity of Petroleum Pitch Polymer-Based Carbon Molded Body
Next Article in Special Issue
Development of Attached Cavitation at Very Low Reynolds Numbers from Partial to Super-Cavitation
Previous Article in Journal
The Application of Seabed Silt in the Preparation of Artificial Algal Reefs
Previous Article in Special Issue
Compressible Two-Phase Viscous Flow Investigations of Cavitation Dynamics for the ITTC Standard Cavitator
Open AccessFeature PaperReview

Cavitating Jet: A Review

Department of Finemechanics, Tohoku University, Sendai 980-8579, Japan
Appl. Sci. 2020, 10(20), 7280; https://doi.org/10.3390/app10207280
Received: 15 September 2020 / Revised: 15 October 2020 / Accepted: 15 October 2020 / Published: 17 October 2020
(This article belongs to the Special Issue New Advances of Cavitation Instabilities)
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. When a cavitating jet is optimized, the peening intensity of the cavitating jet is larger than that of water jet peening, in which water column impacts are used. In order to optimize the cavitating jet, an understanding of the instabilities of the cavitating jet is required. In the present review, the unsteady behavior of vortex cavitation is visualized, and key parameters such as injection pressure, cavitation number and sound velocity in cavitating flow field are discussed, then the estimation methods of the aggressive intensity of the jet are summarized.
View Full-Text
Keywords: cavitation; jet; vortex; mechanical surface treatment; cavitation peening cavitation; jet; vortex; mechanical surface treatment; cavitation peening
Show Figures

Graphical abstract

MDPI and ACS Style

Soyama, H. Cavitating Jet: A Review. Appl. Sci. 2020, 10, 7280.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Search more from Scilit
 
Search
Back to TopTop