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

The Korean Society for Noise and Vibration Engineering (한국소음진동공학회)
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Study of the Weak Shock Wave Propagating inside an Engine Exhaust Muffler

엔진 배기 소음기내를 전파하는 약한 충격파에 관한 연구

  • 이동훈 (서울산업대학교 기계공학과) ;
  • 권용훈 (안동대학교 기계공학부) ;
  • 김희동 (안동대학교 기계공학부)
  • Published : 2002.07.01
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Abstract

The present study addresses a computational work of the weak shock wave propagating inside an automobile exhaust muffler. Several different types of the silencer systems are employed to investigate the magnitude of the shock wave during propagating through them. The Initial shock wave Mach number $M_s$ is varied between 1.01 and 1.30, and a normal shock wave is given at the inlet of the silencer systems. The second order total variation diminishing scheme Is employed to solve the two dimensional, compressible, unsteady Euler equations. The present computational results are compared with the previous experimental ones available. The present computations predict the experimental results with a quite good accuracy. Of the four silencer systems applied. the most desirable silencer system to reduce the peak pressure at the exalt of the exhaust pipe is discussed from the Point of view of the engineering design of the silencer systems.

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References

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