Next Article in Journal
Air Entrainment and Air Demand in the Spillway Tunnel at the Jinping-I Dam
Previous Article in Journal
Changes in Pore Structure of Coal Associated with Sc-CO2 Extraction during CO2-ECBM
Article Menu
Issue 9 (September) cover image

Export Article

Open AccessArticle

Frequency Modulation and Erosion Performance of a Self-Resonating Jet

Key Laboratory of Hydraulic Machinery Transients, Ministry of Education, Wuhan University, Wuhan 430072, China; [email protected] (W.L.); [email protected] (X.W.); [email protected] (D.L.)
Hubei Key Laboratory of Waterjet Theory and New Technology, Wuhan University, Wuhan 430072, China
School of Power and Mechanical Engineering, Wuhan University, Wuhan 430072, China
Shanghai Marine Equipment Research Institute, Shanghai 200030, China; [email protected]
Wuhan Hangda Aero Science & Technology Development CO., LTD, Wuhan 430072, China; [email protected]
Author to whom correspondence should be addressed.
Appl. Sci. 2017, 7(9), 932;
Received: 7 August 2017 / Revised: 7 September 2017 / Accepted: 7 September 2017 / Published: 10 September 2017
PDF [8134 KB, uploaded 13 September 2017]


The self-resonating water jet offers the advantages of both a cavitation jet and a pulsed jet, and thus has been widely used for many practical applications. In the present study, the 120° -impinging edge Helmholtz nozzle was investigated for better erosion performance. The oscillating mechanism was analyzed from both numerical and experimental perspectives. The results showed that the cavitation clouds in the chamber dominate the oscillating frequency. The frequency resulting from the non-linear interaction was also observed in the simulation. The dominant frequency increases linearly as pressure decreases without entrained air. The frequency modulation was achieved through various inspiratory methods, and the modulation range was dependent on the pressure drop. The erosion performance was improved with entrained air, and the improvement was effected by the inspiratory method. The oscillating frequency was determined by the forced frequency of entrained air, and the best erosion performance was achieved at the frequency closest to the fundamental frequency. A feasible method to improve the erosion performance was investigated in this preliminary study, which could provide a guide for practical applications. View Full-Text
Keywords: self-resonating jet; frequency modulation; erosion performance; forced excitation self-resonating jet; frequency modulation; erosion performance; forced excitation

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

Share & Cite This Article

MDPI and ACS Style

Liu, W.; Kang, Y.; Zhang, M.; Zhou, Y.; Wang, X.; Li, D. Frequency Modulation and Erosion Performance of a Self-Resonating Jet. Appl. Sci. 2017, 7, 932.

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.

Related Articles

Article Metrics

Article Access Statistics



[Return to top]
Appl. Sci. EISSN 2076-3417 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top