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

<table>Front view of the calculation grid for the acoustic modeling of the chamber with perforated elements: the 1D inlet and outlet ducts are highlighted in blue.</table>

Advances in Acoustics and Vibration

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Figure 7

Figure 7: A Nonlinear Quasi-3D Approach for the Modeling of Mufflers with Perforated Elements and Sound-Absorbing Material 