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

The Korean Society for Noise and Vibration Engineering (한국소음진동공학회)
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Self Noise Analysis of Towed Array Sonar Induced by Axisymmetric Vibrations Propagating Along Fluid-filled Elastic Hoses

선배열 예인 음탐기의 음향 모듈을 따라 전파하는 축대칭 진동에 기인한 음향 센서 자체 소음 해석

  • 유정수 (울산대학교 조선해양공학부) ;
  • 신현경 (울산대학교 조선해양공학부) ;
  • 안형택 (울산대학교 조선해양공학부) ;
  • 권오조 (국방과학연구소 제6기술연구본부)
  • Received : 2011.02.24
  • Accepted : 2011.04.01
  • Published : 2011.05.20
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Abstract

Performance of array sonars towed underwater is limited due to the self-noise induced mainly by the strumming vibration of the towing cable and also turbulent flow around the acoustic sensor module. The vibration of the towing cable generates axisymmetric waves that propagate along the acoustic module of the array sonar and produce self-noise. The present study aims to investigate the characteristics of the self-noise induced by the axisymmetric vibrations of the acoustic module. The waves of interest are the bulge and extensional waves propagating along the fluid-filled elastic hose. Dispersion relations of these waves are predicted by means of the numerical simulation to evaluate the wave speeds. The self-noise induced by the axisymmetric waves are formulated taking into account the damping of the elastic hose and the effect of the damping is investigated.

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References

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