We analyze the temporal dynamics associated with axisymmetric coherent structures in a
turbulent jet. It has long been established that turbulent jets comprise large-scale coherent …

Three methods are considered for estimating the downstream evolution of wavepackets in
turbulent jets based on upstream measurements. The parabolised stability equations are …

The intermittent behavior of large-scale coherent structures in turbulent jets is studied. These
structures are the primary source of jet noise, and their emitted sound is in turn characterized …

Wavepackets obtained as solutions of the flow equations linearised around the mean flow
have been shown in recent work to yield good agreement, in terms of amplitude and phase …

LES data is then used in conjunction with the linearised Euler equations, where linearisation
is about the global, non-parallel, mean flow. The objective is to explore two further …

Turbulent jet noise is a controversial fluid mechanical puzzle that has amused and
bewildered researchers for more than half a century. Whereas numerical simulations are …

An experiment has been performed in order to provide support for wave-packet jet-noise
modeling efforts. Recent work has shown that the nonlinear effects responsible for the two …

Perturbation wavepackets in a jet, induced by externally applied forcing, are computed from
the linearized equations of motion. An experimentally measured mean flow serves as the …

We study a turbulent jet issuing from a cylindrical nozzle to characterise coherent structures
evolving in the turbulent boundary layer. The analysis is performed using data from a large …

In this study, we examine the dynamical role of the flow structures in the near field of a large-
Reynolds number coaxial jet. The experimental data consist of 2-component laser-Doppler …