Study on noise prediction of non-cavitating underwater propeller with hull-appendages effect

Jihun Choi; Hanshin Seol; Ilryong Park; Soogab Lee

doi:10.7776/ASK.2019.38.3.247

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2019 Vol.38, Issue 3 Next Page

Research Article

Study on noise prediction of non-cavitating underwater propeller with hull-appendages effect 선체-부가물 영향을 고려한 비공동 수중추진기의 소음예측 연구

31 May 2019. pp. 247-255

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Abstract

In this study, to predict the noise of a submarine propeller which is going to become bigger and faster, the non - cavitating propeller noise was predicted based on the numerical analysis which considering the interaction of the hull - appendages - propeller. In order to predict the radiated noise of the propeller, the flow field for the entire region of hull-appendages-propeller was computed by CFD (Computational Fluid Dynamics). And the noise for the thickness noise and the load noise was numerically predicted using FW-H (Ffwocs Williams- Hawkings) acoustic analogy. Numerical noise prediction results were verified by model tests and showed good agreement with the measurement results in predicting total noise level and low frequency noise.

Keywords

Propeller noise

Non-cavitating

Hydroacoustics

CFD (Computational Fluid Dynamics)

Model test

본 연구에서는 대형화, 고속화되어가는 잠수함 추진기의 소음을 보다 정확하게 예측하기 위하여 선체-부가물-추진기의 상호작용이 묘사되는 유동 수치해석을 토대로 비공동 추진기 소음을 예측하였다. 추진기 방사 소음을 예측하기 위해 선체-부가물-추진기 전체영역에 대한 유동 정보를 전산유체역학 해석으로 얻은 뒤, FW-H(Ffowcs Williams-Hawkings) 음향상사법을 적용하여 두께소음, 하중소음에 대한 소음을 수치적으로 예측하였다. 수치적 소음예측 결과는 모형시험을 통해 검증하였으며, 전체 소음 수준과 저주파 대역 소음예측에 있어 계측결과와 좋은 일치를 보였다.

키워드

추진기 소음

비공동

유체동역학 소음

전산유체역학

모형시험

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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 : 38
No :3
Pages :247-255
Received Date : 2019-01-25
Revised Date : 2019-03-13
Accepted Date : 2019-04-16
DOI :https://doi.org/10.7776/ASK.2019.38.3.247

The Journal of the Acoustical Society of Korea ISSN:1225-4428(Print) 2287-3775(Online) 한국음향학회지

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