한국소음진동공학회:학술대회논문집 (Proceedings of the Korean Society for Noise and Vibration Engineering Conference)
- 한국소음진동공학회 2005년도 추계 학술대회논문집(수송기계편)
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- Pages.114-117
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- 2005
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- 1598-2548(pISSN)
동심관형 공명기의 천공 분포 및 연장관이 전달 손실에 미치는 특성 해석
Effect of Non-uniform Perforation and Extended Inlet/outlet Length in the Concentric Resonator on the Transmission Loss
- Lee, Seong-Hyun (KAIST) ;
- Ih, Jeong-Guon (KAIST)
- 발행 : 2005.11.17
초록
In the reactive concentric resonator, perforated inner tubes are widely used for various purposes related to noise reduction, flow guiding, and structural aspects. Perforation distribution patterns influence both the acoustic performance and mechanical performance. In this study, the influence of distribution patterns on acoustic performance are explained by adopting the concept of extended inlet/outlet length. Predicted transmission with varying extended inlet/outlet length is compared with prediction by varying distribution patterns. The transmission loss difference due to perforation distribution patterns can be explained by changing the extended inlet/outlet length of the uniformly perforated resonator.