ACOUSTIC PROPAGATION IN DUCTS WITH SLOWL
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N. PEAKE; A.J. COOPER
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Article
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2001
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Elsevier Science
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English
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The propagation of acoustic waves along a duct of elliptic cross-section, the eccentricity of which varies slowly along the axis, is considered as a model of the unsteady #ow inside a realistic aeroengine nacelle. This is a development of recent work on a circular duct by Rienstra. The acoustic "eld