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- W1521465995 abstract "Axial segmentation of acoustically absorbing liners in rectangular, circular or annual duct configurations is a very useful concept for obtaining higher noise attenuation with respect to the bandwidth of absorption as well as the maximum attenuation. As a consequence, advanced liner concepts are proposed which induce a modal energy transfer in both cross-sectional directions to further reduce the noise radiated from turbofan engines. However, these advanced liner concepts require three-dimensional geometries which are difficult to treat theoretically. A very simple three-dimensional problem is investigated analytically. The results show a strong dependence on the positioning of the liner for some incident source modes while the effect of three-dimensional segmentation appears to be negligible over the frequency range considered." @default.
- W1521465995 created "2016-06-24" @default.
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- W1521465995 date "1979-06-01" @default.
- W1521465995 modified "2023-09-23" @default.
- W1521465995 title "On the attenuation of sound by three-dimensionally segmented acoustic liners in a rectangular duct" @default.
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- W1521465995 hasPublicationYear "1979" @default.
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