• Title/Summary/Keyword: 다입-출력관

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Transmission Loss Analysis of Simple Expansion Chambers with Multiple Inlets and Outlets (다입력/다출력관을 갖는 확장관의 투과손실 해석)

  • 박기춘;김양한
    • Journal of KSNVE
    • /
    • v.8 no.5
    • /
    • pp.807-813
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    • 1998
  • 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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