HIGHLIGHTS
SUMMARY
Analyzing the available literature on CFD (computational fluid dynamics) simulations on mufflers, it is not possible to derive a general guideline for the modelling approach as well as meshing strategy. In the model that use the porous baffle interface to model the perforated pipe, also the solid walls of the inner pipe (Fig 1) are modelled using a baffle interface (not porous in this case). As previous mentioned, the geometry is discretized using the trimmed mesh (Fig 8), with the same setting adopted for the real geometry model, they satisfy mesh sensitivity study and . . .
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