수중방사소음 예측을 위한 빔형성 방법 기반 추진기 캐비테이션 음원준위 추정Estimation of Propeller Cavitation Source Level Based on Beamforming Method for Prediction of Underwater Radiated Noise
- Other Titles
- Estimation of Propeller Cavitation Source Level Based on Beamforming Method for Prediction of Underwater Radiated Noise
- Authors
- 김용현; 설한신; 이정훈; 정홍석
- Issue Date
- 2021
- Publisher
- 한국소음진동공학회
- Keywords
- Underwater Radiated Noise; Source Level Estimation; Beamforming method; On-board measurement; 수중방사소음; 음원준위추정; 빔형성 방법; 온보드 계측
- Citation
- 한국소음진동공학회논문집, v.31, no.2, pp 133 - 141
- Pages
- 9
- Journal Title
- 한국소음진동공학회논문집
- Volume
- 31
- Number
- 2
- Start Page
- 133
- End Page
- 141
- URI
- https://www.kriso.re.kr/sciwatch/handle/2021.sw.kriso/9288
- DOI
- 10.5050/KSNVE.2021.31.2.133
- ISSN
- 1598-2785
2287-5476
- Abstract
- In general, the prediction of underwater radiated noise requires source level information. This study proposes a method for the source level estimation of propeller cavitation based on the beamforming method. The proposed method obtains the source level information by determining the source strength corresponding to the estimated cavitation position. As the solution of the minimization problem can be determined analytically rather than numerically, it has the advantage of fast computational time. The proposed method is verified through a model-scale test conducted in a large cavitation tunnel of Korea Research Institute of Ships and Ocean Engineering. The estimated source level of the propeller cavitation matches well with a transfer-function-based method in the frequency band that satisfies the far-field. In addition, another method for reducing the computational time is considered through determining the source level from the cavitation position and sound pressure level.
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