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 …

Wavelet transform has become a common tool for processing non-stationary signals in many
different fields. The present paper reports a review of some applications of wavelet in …

Three simplified wave-packet models of the coherent structures in subsonic jets are
presented. The models comprise convected wave-packets with time-dependent amplitudes …

We present a conditional space–time proper orthogonal decomposition (POD) formulation
that is tailored to the eduction of the average, rare or intermittent events from an ensemble of …

An experimental study of the pressure field generated by a subsonic, single stream, round
jet is presented. The investigation is conducted in the near-field region at subsonic Mach …

The present paper reports an investigation of the statistical properties of pressure
fluctuations in the near field of subsonic compressible jets. The data-base analyzed has …

An overview of jet noise research is presented wherein the principal movements in the field
are traced since its beginnings. Particular attention is paid to the evolution of our …

This paper presents an analysis of data generated by means of large eddy simulation for a
single-stream, isothermal Mach 0.9 jet. The acoustic field is decomposed into Fourier modes …

Following on previous works showing that far-field jet noise has significant intermittent
aspects, the present work assumes that these intermittent events are the dominant feature of …

A wavelet-based conditional analysis of unsteady flow and sound signals highlights the role
of intermittent perturbations both in the sound generation and the unsteady field of an …