• 대한조선학회논문집
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• 제41권2호
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• pp.33-46
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• 2004

The cavitating noise of underwater propeller is considered numerically in this study. The main purpose of this research is to analyze these noise sources from marine propeller. The approach for investigation is a potential based panel method coupled with acoustic analogy. To predict propeller sheet cavitation noise, the blade surface cavity is considered as a single valued pulsating volume of vapor attached to the blade surface. The time dependent cavity volume data are used for noise prediction. Furthermore, we analyze hydrofoil cavitation bubble behavior and noise using Eulerian/Lagrangian approach. Through this study, we can analyze dominant noise source of marine propeller and provide a basis for proper noise control strategies.

• 소음진동
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• 제25권4호
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• pp.18-23
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• 2015

• 소음진동
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• 제25권4호
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• pp.13-17
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• 2015

• 소음진동
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• 제20권1호
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• pp.14-19
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• 2010

• 한국소음진동공학회:학술대회논문집
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• 한국소음진동공학회 2004년도 춘계학술대회논문집
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• pp.57-62
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• 2004

• 소음진동
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• 제9권6호
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• pp.1065-1071
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• 1999

• 소음진동
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• 제26권4호
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• pp.17-20
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• 2016

• 소음진동
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• 제15권3호
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• pp.19-26
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• 2005

• 한국음향학회:학술대회논문집
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• 한국음향학회 1999년도 학술발표대회 논문집 제18권 2호
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• pp.421-426
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• 1999

수중 프로펠러의 비공동 소음을 Ffowcs William-Hawkings 형태의 음향 상사 방정식을 시간영역에서 해석하였으며 전산공력음향학(CAA)과 경계 요소법(BIEM)등 수치적 방법을 통해 해석하였다. 덕트 없는 프로펠러와 덕트 프로펠러에 대해서 비균일 유입류 조건에 대해서 소음 강도와 방향성을 예측하였으며 이는 수중 프로펠러의 운용시 지배적인 소음원을 구별하고 그 특성을 파악하여 적절한 소음 제어 책을 마련하는 기반이 될 것이다.

• 한국소음진동공학회:학술대회논문집
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• 한국소음진동공학회 2006년도 추계학술대회논문집
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• pp.1-4
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• 2006

Most apartment houses were sited in road because it was convenient for transportation. One of the most noise is traffic noise at apartment house. The tested site was closely located in rail road and installed soundproofing wall. This study is measured indoor and outdoor noise distribution in apartment house for each story. It was similar noise distribution at indoor test but it was different noise distribution at outdoor test for each story. It was measured higher noise level at the upper stories than 5th story in outdoor noise distribution.