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Model ID: 262

Reactive Muffler

This is a benchmarking model to compare the abilities of COMSOL to an analytical solution.

The model examines the sound-transmission properties of an idealized reactive muffler with infinitely long inlet and outlet pipes and one expansion chamber. The infinitely long inlet and outlets are simulated through a reflection-free source at the inlet pipe and a reflection-free end of the outlet pipe, both in-built boundary conditions.

The axisymmetric COMSOL Multiphysics solution compares favourably to the theoretical 1D solution.

The plot shows the magnitude of the pressure field at frequency of 19Hz.

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