A Nonlinear Quasi-3D Approach for the Modeling of Mufflers with Perforated Elements and Sound-Absorbing Material

<table>Lateral view of the calculation grid for the acoustic modeling of the chamber with perforated elements: it can be seen the perforated duct (in red) and the 1D inlet and outlet ducts (in blue).</table>

Advances in Acoustics and Vibration

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Figure 8

Figure 8: A Nonlinear Quasi-3D Approach for the Modeling of Mufflers with Perforated Elements and Sound-Absorbing Material 