In this work, the problem of a muffler with internal extended inlet/outlet tubes is studied with
the aim to optimize its geometric design. When boundary element method (BEM) based on …

This article presents a topology optimization (TO) method developed for maximizing the
acoustic attenuation of a perforated dissipative muffler in the targeted frequency range by …

In the present study, the acoustic attenuation performances of mufflers are predicted by
employing three-dimensional isogeometric analysis (IGA) and multi-patch technique for the …

The acoustic modelling of automotive exhaust devices, such as catalytic converters (CC)
and diesel particulate filters (DPF), usually requires the use of multidimensional analytical …

The influence of multimodal incident sound fields on the acoustic behaviour of large
aftertreatment devices incorporating a monolith is modelled and analysed in detail. The …

This work presents an efficient numerical approach based on the combination of the mode
matching technique and the finite element method (FEM) to model the sound propagation in …

A technique that combines the boundary element method (BEM) and the point collocation
approach is proposed to calculate the transmission loss (TL) of silencers in the absence of …

Aiming at reducing the high-amplitude and wide-frequency noise in charged air intake
system of the powertrain, this paper proposes a new method for predicting the acoustic …

To reduce the computational requirements of full multidimensional numerical calculations for
silencers with arbitrary but uniform cross sections, a semi-weak-form mesh-free method …

The present work concerns the numerical eigenmode analysis of acoustically lined ducts of
any constant cross-sectional shape in the presence of mean flow. The duct is lined with bulk …