소음진동 (Journal of KSNVE)

한국소음진동공학회 (The Korean Society for Noise and Vibration Engineering)
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다입력/다출력관을 갖는 확장관의 투과손실 해석

Transmission Loss Analysis of Simple Expansion Chambers with Multiple Inlets and Outlets

  • 발행 : 1998.10.01
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초록

Transmission loss of the simple expansion chamber with multiple inlet and outlet ports is obtained. Transfer matrices which represent the relation between the power variables(pressure and velocity) of inlets and outlets depend on the input relatons as well as the acoustic system parameters(i.e. geometry of the chamber, wall admittance, etc.). The analysis has been performed analytically, including the effects of higher order modes for the 2-inlet/1-outlet, 1-inlet/2-outlet and 2-inlet/2-outlet systems. This study yeilds that phase difference between the inlet ports can significantly increase the transmission loss in low frequency range.

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참고문헌

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  4. Trans. J. Vib. Acoust. ASME. v.113 no.4 General Solution of Acoustic Wave Equation for Circular Reversing Chamber With Temperature Gradient Kim, Y. -H.;Choi, J. -W.
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  10. 한국과학기술원 석사학위논문 다입력 다출력관을 갖는 확장관의 전달손실해석 박기춘
  11. 한국소음진동공학회지 v.2 no.3 두개의 음향 탐촉자를 이용한 소음기의 투과 손실 측정과 오차 해석 강성우;김양한