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Studies on reactive mufflers : part 2. mufflers with air flow

Technology reports of the Yamaguchi University Volume 3 Issue 3 Page 205-214
published_at 1984-12
KJ00004351055.pdf
[fulltext] 348 KB
Title
Studies on reactive mufflers : part 2. mufflers with air flow
Creators Fukuda Motokazu
Creators Kojima Naoya
Source Identifiers
Transmission loss characteristics of a reactive type muffler have been studied by Davis D. D. et al under the assumption that the tail pipe of the muffler is a non-reflective one. On the other hand, assuming that the pipe is completely reflective, Fukuda has developed an attenuation theory in his previous paper. In the case of a muffler with air flow, however, these equations are not always correct in estimating frequency characteristics of noise reduction. This is because of the change in these characteristics due to the air flow or a secondary noise inside the muffler. The authors have studied the influence of air flow on the relationship between the figure of the reactive type muffler and the noise radiated from it. They have also investigated how to identify the sources of the air flow noise inside the cavity. Furthermore, they have estimated air flow noise by means of calculation and experiment. As a result, many interesting conclusions have been obtained together with important data for the muffler design.
Languages eng
Resource Type departmental bulletin paper
Publishers 山口大学工学部
Date Issued 1984-12
File Version Version of Record
Access Rights open access
Relations
[ISSN]0386-3433
[NCID]AA0086073X
Schools 工学部