Transactions of the Korean Society of Automotive Engineers (한국자동차공학회논문집)

The Korean Society of Automotive Engineers (한국자동차공학회)
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A Study on the Flow Characteristics and Pressure Loss of a Muffler for the Variation of Volumetric Rate and Offset

체적비와 오프셋 변화에 의한 소음기내의 유동특성과 압력손실에 관한 연구

  • 김민호 (기아자동차 기술연구소) ;
  • 정우인 (기아자동차 기술연구소) ;
  • 천인범 (기아자동차 기술연구소)
  • Published : 2000.07.01
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Abstract

It is well known that an automotive muffle strongly influences engine efficiency and noise reduction. The performance of a muffler system is determined by the geometrical parameters such as the relative location of an inlet and outlet pipe size and cross sectional geometry of a chamber. In this study numerical analysis was performed to examine the flow characteristics in the simple automotive muffler for the variation of volumetric rate and offset. The computational grid generation was carried out. The RNG k-$\varepsilon$ turbulence model was applied. To provide the boundary condition for numerical analysis the experimental measurement wes carried out. As a result of this study we could understand that there was a recirculation flow inside muffler and pressure loss depends on the variation of volumetric rate and offset.

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References

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