Abstract:We consider structures like the muffler of the engine exhaust, where the acoustic waves propagate through periodically perforated barriers. Recently we proposed a homogenized model [6] of the acoustic transmission through the layer with embedded rigid obstacles of arbitrary shapes, which represent the perforation. The homogenized model describes relationship between jump of the acoustic pressures p + and p − at the discontinuity interface Γ 0 and the transverse acoustic velocity g 0± , on introducing in-layer … Show more
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