Abstract
The viscous dissipation accompanying plane wave propagation through an orifice in a baffle in a circular duct is theoretically analyzed. The solution is sought in the form of a series in the eigenfunctions of the duct. The resulting surface resistance is described in terms of the dissipative attached length of the orifice. The dependence of the dissipative attached length of the orifice on the ratio of the orifice diameter to the duct diameter is determined.
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Original Russian Text © A.I. Komkin, M.A. Mironov, 2015, published in Akusticheskii Zhurnal, 2015, Vol. 61, No. 4, pp. 442–446.
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Komkin, A.I., Mironov, M.A. Dissipative attached length of an orifice in a baffle in a circular duct. Acoust. Phys. 61, 402–406 (2015). https://doi.org/10.1134/S1063771015040053
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DOI: https://doi.org/10.1134/S1063771015040053