Guided-jet waves have been shown to close resonance loops in a myriad of problems such
as screech and im**ement tones in jets. These discrete, upstream-travelling waves have …

We investigate the intermittency of the coupling behaviour in screeching twin round
supersonic jets at low Mach numbers across a range of nozzle spacings. Application of …

The effect of nozzle exit geometry on the triadic interactions between convective Kelvin–
Helmholtz instabilities and the quasi-steady shock structure of supersonic jets is discussed …

Spatial linear stability analysis is used to study the axisymmetric screech tones generated by
twin converging round nozzles at low supersonic Mach numbers. Vortex-sheet and finite …

A novel data-driven modal analysis method, reduced-order variational mode decomposition
(RVMD), is proposed, inspired by the Hilbert–Huang transform and variational mode …

The estimation of time-resolved three-dimensional (3D) density fields of an underexpanded
jet at the nozzle pressure ratio of 2.42, a so-called “spatiotemporal super-resolution” was …

Linear stability theory (LST) is often used to model the large-scale flow structures in the
turbulent mixing region and near pressure field of high-speed jets. For perfectly expanded …

The influence of the boundary layer (BL) thickness on the tonal noise generated by subsonic
im**ing jets is investigated. For that, initially laminar jets at Mach numbers with increasing …

This work explores the use of bi-modal excitation to reduce the noise in a supersonic
rectangular jet. The excitation is guided by previously published reduced-order modelling …

An empirical closure model of rectangular twin jets' screech and coupling has been
developed to predict their coupling mode at a given flow condition. It builds on Powell's …