Acoustic Resistance of an Orifice at High Sound Pressure Levels


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The effect of sound pressure level on acoustic resistance of an orifice in a baffle is investigated based on the measurements in an impedance tube by the two-microphone method. Dependences of the resistance of an orifice on the diameter of the latter are obtained for the case of nonlinear mode of operation. It is shown that, in this case, the resistance of the orifice depends on its diameter. The dependence of the nonlinear resistance on particle velocity in the orifice is approximated by a linear function.

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A. Komkin

Bauman State Technical University

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Email: akomkin@mail.ru
俄罗斯联邦, Vtoraya Baumanskaya ul. 5, Moscow, 105005

A. Bykov

Bauman State Technical University

Email: mironov@akin.ru
俄罗斯联邦, Vtoraya Baumanskaya ul. 5, Moscow, 105005

M. Mironov

Bauman State Technical University; Andreev Acoustics Institute

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Email: mironov@akin.ru
俄罗斯联邦, Vtoraya Baumanskaya ul. 5, Moscow, 105005; ul. Shvernika 4, Moscow, 117036

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