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논문 기본 정보

자료유형
학술저널
저자정보
이종주 (Agency for Defense Development) 강명환 (Agency for Defense Development) 한승진 (Agency for Defense Development) 정현주 (Agency for Defense Development) 배수룡 (Agency for Defense Development) 정우진 (Agency for Defense Development)
저널정보
한국소음진동공학회 한국소음진동공학회논문집 한국소음진동공학회논문집 제24권 제12호
발행연도
2014.12
수록면
969 - 976 (8page)

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초록· 키워드

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Nowadays, it is required for naval ships to estimate 3D underwater radiated noise pattern in all direction at peak frequencies of hull vibration for the reduction of being detected and doing the effective operation. For this purpose, the numerical method has to be developed to calculate 3D underwater radiated noise pattern with experimental data. It is very difficult to obtain the experimental data for the real ship. Alternative to get the experimental results is to use NAH(near-field acoustic holography) in acoustic tank with experimental model. Application of NAH in acoustic tank for the experimental model needs some investigation of reflection wave from the wall of the acoustic tank and unmeasured zone of the experimental model due to the supporting structure for it. In this study, the effect of reflection wave in the acoustic tank and unmeasured area of the experimental model when using the NAH was investigated with experiment and numerical model. From these, it is known for the error due to reflection wave can be reduced when the distance between the measurement plane and source is being shorten. Also, unmeasured area of the experimental model gives rise to some error in the estimation of the far-field acoustic pressure.

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ABSTRACT
1. 서론
2. 수조 내 음원으로부터 거리에 따른 반사파 영향분석
3. 3차원 수중방사소음 패턴 산출 시 계측면적의 영향분석
4. 결론
References

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UCI(KEPA) : I410-ECN-0101-2015-530-002806660