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

  • 제23권8호
  • /
  • Pages.770-776
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  • 2013
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  • 1598-2785(pISSN)
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  • 2287-5476(eISSN)
한국소음진동공학회 (The Korean Society for Noise and Vibration Engineering)
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함정의 해수 배관소음 저감을 위한 흡음형 소음기 연구

A Study on the Absorptive Silencer for Reducing Noise Propagate in Seawater Pipes on Ship

  • 투고 : 2013.06.19
  • 심사 : 2013.07.25
  • 발행 : 2013.08.20
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초록

Fluid-borne noise produced by seawater circulating pumps propagates through the seawater connected pipes and radiates from the hull opening of a ship. This noise causes the increases of underwater radiated noise and self noise of ship. To reduce the noise propagation through the seawater connected pipes, absorptive silencer must be needed. In this paper, theoretical model to analyze the transmission loss of absorptive silencer was presented and the design parameters of absorptive silencer were verified. Theoretical calculations were performed according to a thickness, a length, an internal pressure and mechanical properties of its absorptive material in order to analyze the characteristics of absorptive silencer. From the theoretical calculation results, the absorptive silencer was manufactured and transmission loss was measured in the test facilities. The results of theory and measurement are compared and discussed.

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참고문헌

  1. Cummings, A., 1988, Sound Attenuation of a Finite Length Dissipative Flow Duct Silencer with Internal Mean Flow in the Absorbent, Journal of Sound and Vibration, Vol. 127, No. 1, pp. 1-17. https://doi.org/10.1016/0022-460X(88)90347-1
  2. Peat, K. S., 1991, A Transfer Matrix for an Absorption Silencer Element, Journal of Sound and Vibration, Vol. 146, No. 2, pp. 353-360. https://doi.org/10.1016/0022-460X(91)90770-K
  3. Kirby, R., 2001, Simplified Techniques for Predicting the Transmission Loss of a Circular Dissipative Silencer, Journal of Sound and Vibration, Vol. 243, No. 3, pp. 403-426. https://doi.org/10.1006/jsvi.2000.3425
  4. Kim, H. J., Ih, J. G. and Jeong, J. H., 2002, A Comparison of the Transmission Losses of Two-dimensional Dissipative Silencers Predicted by Analytical Method and BEM, Proceeding of the KSNVE Annual Spring Conference, pp. 1001-1004.
  5. Kim, J. Y. and Lee, I. J., 2011, Noise Reduction of a Blower for an Automatic Car Washer by Using Dissipative Silencer, Transactions of the Korean Society for Noise and Vibration Engineering, Vol. 21, No. 8, pp. 1001-1004.
  6. Kohmann, P. and Gaul, L., 1996, Noise Reduction in Fluid Filled Pipes on Ships by a New Muffler, IMAC XIV-14th International Modal Analysis Conference, pp. 1482-1487.
  7. Park, K. H., 2007, A Study on Determining the Transmission Loss of Water-borne Noise Silencer in a Sea-connected Piping System, Journal of Acoustical Society of Korea, pp. 207-213.