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Influence of Liner Thickness, Mean Flow Profile, and Three-Dimensionality of Duct on Sound Wave Propagations in Lined Ducts
https://jaxa.repo.nii.ac.jp/records/34561
https://jaxa.repo.nii.ac.jp/records/34561d5346c4c-a802-4466-a5b7-cf01b755d94b
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
SA2401396.pdf (905.9 kB)
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| Item type | 紀要論文 / Departmental Bulletin Paper(1) | |||||||||
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| 公開日 | 2015-03-26 | |||||||||
| タイトル | ||||||||||
| タイトル | Influence of Liner Thickness, Mean Flow Profile, and Three-Dimensionality of Duct on Sound Wave Propagations in Lined Ducts | |||||||||
| 言語 | en | |||||||||
| 言語 | ||||||||||
| 言語 | eng | |||||||||
| 資源タイプ | ||||||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||||||
| 資源タイプ | departmental bulletin paper | |||||||||
| 著者 |
YOSHIDA, Hiro
× YOSHIDA, Hiro
× OGUCHI, Hakuro
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| 著者所属（英） | ||||||||||
| en | ||||||||||
| Department of Mechanical Engineering,Chiba University | ||||||||||
| 出版者 | ||||||||||
| 出版者 | 東京大学宇宙航空研究所 | |||||||||
| 出版者（英） | ||||||||||
| 出版者 | Institute of Space and Aeronautical Science,University of Tokyo | |||||||||
| 書誌情報 |
en : ISAS report/Institute of Space and Aeronautical Science,University of Tokyo 巻 45, 号 8, p. 147-164, 発行日 1980-09 |
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| 抄録（英） | ||||||||||
| 内容記述タイプ | Other | |||||||||
| 内容記述 | This paper concerns propagation and attenuation of sound waves through acoustically lined ducts. For a cylindrical duct whose linear consists of a point-reacting porous layer backed by cellular cavities, the admittance formula derived by taking into account a wave motion within the liner is applied to an analysis of wave propagation downstream and upstream. Attenuation spectra evaluated by this analysis are compared with those based upon the semi-empirical formula widely used. For the point-reacting liner of fixed porous material properties, influences of the liner thickness, mean flow profile, and three-dimensionality of duct (i.e. cylindrical or plane) on the attenuation of waves propagating both downstream and upstream are examined. Moreover, the attenuation of waves with several spinning modes is examined for the case of uniform mean flow. The results show a significant role of the porous layer thickness for the attenuation characteristics of wave propagations. | |||||||||
| ISSN | ||||||||||
| 収録物識別子タイプ | ISSN | |||||||||
| 収録物識別子 | 0372-1418 | |||||||||
| 書誌レコードID | ||||||||||
| 収録物識別子タイプ | NCID | |||||||||
| 収録物識別子 | AA00675986 | |||||||||
| 資料番号 | ||||||||||
| 内容記述タイプ | Other | |||||||||
| 内容記述 | 資料番号: SA2401396000 | |||||||||
