Transactions of the Korean Society for Noise and Vibration Engineering (한국소음진동공학회논문집)

The Korean Society for Noise and Vibration Engineering (한국소음진동공학회)
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A Study on Insertion Loss Estimation Formulas of Rectangular Silencers for Ships

선박용 사각 소음기의 삽입손실 추정식 연구

  • Kim, Tae-Gyoung (Department of Naval Architecture and Ocean Engineering, Seoul National University) ;
  • Hong, Suk-Yoon (Department of Naval Architecture and Ocean Engineering, Seoul National University) ;
  • Song, Jee-Hun (Department of Naval Architecture and Ocean Engineering, Chonnam National University) ;
  • Kwon, Hyun-Wung (Department of Naval Architecture and Ocean Engineering, Koje College) ;
  • Kong, Young-Mo (Daewoo Shipbuilding & Marine Engineering Co., Ltd.)
  • Received : 2016.08.22
  • Accepted : 2016.10.07
  • Published : 2016.12.20
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Abstract

The acoustic performance estimation formulas for silencers are developed mainly by theoretical or empirical methods. However, the existing formulas are available only for a limited range of silencers. In this paper, the procedures for noise analysis of the silencers are established by comparing analytic results to experimental results. With the proven analysis procedures, impedances of the rectangular silencers for ships are adversely predicted from National Environmental Balancing Bureau (NEBB) data, and with the estimated impedances, insertion loss formulas for large silencers are developed using boundary element method (BEM). The developed formulas can be efficiently used for predicting acoustic performance of the silencers for ships.

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References

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