Abstract
Absorption characteristics of a Helmholtz resonator positioned at the end wall of a circular duct are considered. The absorption coefficient of the resonator is experimentally investigated as a function of the diameter and length of the resonator neck and the depth of the resonator cavity. Based on experimental data, the linear analytic model of a Helmholtz resonator is verified, and the results of verification are used to determine the dissipative attached length of the resonator neck so as to provide the agreement between experimental and calculated data. Dependences of sound absorption by a Helmholtz resonator on its geometric parameters are obtained.
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Original Russian Text © A.I. Komkin, M.A. Mironov, A.I. Bykov, 2017, published in Akusticheskii Zhurnal, 2017, Vol. 63, No. 4, pp. 356–363.
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Komkin, A.I., Mironov, M.A. & Bykov, A.I. Sound absorption by a Helmholtz resonator. Acoust. Phys. 63, 385–392 (2017). https://doi.org/10.1134/S1063771017030071
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DOI: https://doi.org/10.1134/S1063771017030071