Periodic sound reduction at some frequencies and high pressure loss could be considered
as the disadvantages of simple expansion silencers. Generally, reactive elements are …

The present work aims to investigate the newly modified transfer matrix method (MTMM) to
predict an automotive exhaust muffler's transmission loss (AEMTL). The MTMM is a mixed …

For investigating the nonlinear acoustic behavior of circular orifices under high amplitude
sound excitation, an approach based on the three-dimensional time-domain computational …

The three-dimensional frequency-domain linearized Navier-Stokes equations (LNSEs) with
consideration of eddy viscosity are developed to evaluate the acoustic attenuation …

Abstract Exhaust Gas Cleaning Systems (EGCS) such as scrubbers are mandatory and
extensively used to abate SOx in exhaust gases when high sulphur content fuel oil is …

This research is the first attempt to examine the hydrodynamic loads of nonlinear solitary
waves on bridge decks near a coastline. We employ laboratory experiments and a large …

When a rotating wave carrying orbital angular momentum undergoes an extreme Doppler
shift, the observed frequency will become negative. The negative frequency is the …

The rotational Doppler shift in acoustic waves carrying orbital angular momentum (OAM) has
been applied in experiments to demonstrate the Zel'dovich amplification, which is …

The concept that classic waves reflected from a rotating absorbing cylinder will be amplified
is analogously linked to the Penrose superradiance that may extract energy from a rotating …

In order to improve the acoustic performance of an internal combustion forklift exhaust
muffler, this paper considered the influence of air flow and temperature, based on the flow …