Investigation into cavitation noise generation mechanism of gap-flow cavitation for a NACA 0009 wing

Sangheon Lee; Cheolung Cheong

doi:10.7776/ASK.2025.44.2.161

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2025 Vol.44, Issue 2 Preview Page Next Page

Research Article

Investigation into cavitation noise generation mechanism of gap-flow cavitation for a NACA 0009 wing NACA 0009 날개의 간극 유동에 의한 공동 소음 메커니즘 분석

31 March 2025. pp. 161-169

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Abstract

The Underwater Radiated Noise (URN) of submarines is one of the most critical factors affecting their operational safety. Among the various noise sources from the propeller, cavitation generates the highest noise levels. To reduce cavitation noise, military propellers have recently shifted from open type to ducted type designs. However, the small gap between the rotor and the duct creates unique vortices, altering the radiated noise characteristics. This study predicts vortex cavitation in gap flow and analyzes its role in URN generation. Additionally, the noise radiation mechanism caused by cavitation interaction is identified.

Keywords

Underwater Radiated Noise (URN)

Gap flow of wing

Cavitation

Generation mechanism of cavitation noise

잠수함의 수중 방사 소음(Underwater Radiated Noise, URN)은 함의 안전성에 영향을 미치는 가장 중요한 성능 요소 중 하나로 평가된다. 특히, 추진기에서 발생하는 공동 현상은 추진기 소음원 중 가장 높은 수준의 방사 소음을 유발한다. 최근 공동 소음을 저감하기 위해 군사용 선박의 추진기는 기존의 개방형에서 덕트형으로 변화하는 추세이다. 그러나 로터와 덕트 사이의 작은 간극으로 인해 개방형 추진기와는 다른 유형의 와류가 형성되며, 이에 따라 추진기 공동으로 인한 방사 소음 특성 또한 변화하고 있다. 본 연구에서는 이러한 간극 유동에서 발생하는 와류 공동 현상을 예측하고, 이로 인해 발생하는 수중 방사 소음의 생성 메커니즘을 분석하였다. 또한, 공동 간의 상호작용에 따른 소음 방사 메커니즘을 규명하였다.

키워드

수중 방사 소음

날개 간극 유동

공동 현상

공동 소음 발생 메커니즘

References

H. S. Seol, C. S. Park, and K. S. Kim, "Numerical prediction of marine propeller BPF noise using FW-H equation and its experimental validation" (in Korean), Trans. Kr. Soc. Noise Vib. Eng. 26, 705-713 (2016).

10.5050/KSNVE.2016.26.6.705

J. B. Ha, G. R. Ku, C.U. Cheong, H. S. Seol, and H. S. Jeong, "Extraction of compressible pressure due to ship propeller from hull surface pressure using Wavenumber-frequecny transformation" (in Korean), Trans. Kr. Soc. Noise Vib. Eng. 33, 34-43 (2023).

10.5050/KSNVE.2023.33.1.034

G. R. Ku, C. U. Cheong, H. S. Seol, and H. S. Jeong, "Numerical investigation on cavitation and non-cavitation flow noise on pumpjet propulsion" (in Korean), J. Acoust. Soc. Kr. 42, 250-261 (2023).

G. R. Ku, C. U. Cheong, and H. S. Seol, "Numerical investigation of tip-vortex cavitation noise of an elliptic wing using coupled Eulerian-Lagrangian approaches," Appl. Sci. 10, 5897 (2020).

10.3390/app10175897

G. R. Ku, C. U. Cheong, I. Y. Park, and H. S. Seol, "Numerical investigation of tip-vortex cavitation inception and noise of underwater propellers of submarine usinig sequential Eulerian-Lagrangian approaches," Appl. Sci. 10, 8721 (2020).

10.3390/app10238721

Z. Xiong, W. Rui, L. Lu, G. Zhang, and X. Huang, "Experimental investiagtion of broadband thrust and loading noise from pumpjet due to turbulence ingestion," Ocean Eng. 255, 111408 (2022).

10.1016/j.oceaneng.2022.111408

G. Gan, Y. Duan, J. Yi, Q. Fu, R. Zhu, and W. Shi, "Effect of tip clearance on the cavitation performance of high-speed pump-jet propeller," Processes, 11, 3050 (2023).

10.3390/pr11113050

J. Yuan, Y. Chen, L. Wang, Y. Fu, Y. Zhou, J. Xu, and R. Lu, "Dynamic analysis of cavitation tip vortex of pump-jet propeller based on DES," Appl. Sci. 10, 5998 (2020).

10.3390/app10175998

G. Linlin, D. Zhang, J. Cheng, and X. Escaler, "Large eddy simulation of cavitating tip leakage vortex structures and dynamics around a NACA0009 hydrofoil," J. Mar. Sci. Eng. 9, 1198 (2021).

10.3390/jmse9111198

M. Dreyer, Mind gap: tip leakage vortex dynamics and cavitation in axial turbines, (Ph.D thesis, Swiss Federal Institute of Technology in Lausanne, 2015).

H. Fitzpatrick and M. Strasberg, "Hydrodynamic source of sound," Proc. 1st Symposium on Naval Hydrodynamics, 241-280 (1956).

Information

Publisher :The Acoustical Society of Korea
Publisher(Ko) :한국음향학회
Journal Title :The Journal of the Acoustical Society of Korea
Journal Title(Ko) :한국음향학회지
Volume : 44
No :2
Pages :161-169
Received Date : 2025-02-25
Revised Date : 2025-03-19
Accepted Date : 2025-03-20
DOI :https://doi.org/10.7776/ASK.2025.44.2.161

The Journal of the Acoustical Society of KoreaISSN:1225-4428(Print) 2287-3775(Online)한국음향학회

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