Effect of mean-velocity profile shapes o
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A.H. Nayfeh; J.E. Kaiser; B.S. Shaker
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Article
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1974
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Elsevier Science
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English
โ 548 KB
Acoustic propagation through a lined two-dimensional duct is examined in order to assess the influence of the shape of the mean-velocity profile on the attenuation rate. Five mean-velocity profiles are considered: linear, parabolic, Pohlhausen, l/7th power law with a linear sub-layer, and linear wit