Supersonic jets, particularly shock-containing jets, often exhibit high-intensity, discrete-
frequency acoustic tones. These tones are the signature of an aeroacoustic resonance loop …

This paper describes the mechanism underpinning modal staging behaviour in screeching
jets. An upstream-propagating subsonic guided-jet mode is shown to be active in all stages …

The interaction between various wave-like structures in screeching jets is considered via
both experimental measurements and linear stability theory. Velocity snapshots of …

Acoustic tones in the near-nozzle region of jets: characteristics and variations between Mach
numbers 0.5 and 2 Page 1 J. Fluid Mech. (2021), vol. 921, A3, doi:10.1017/jfm.2021.426 …

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

This paper explores the screech closure mechanism for different axisymmetric modes in
shock-containing jets. While many of the discontinuities in tonal frequency exhibited by …

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 interactions between upstream-propagating guided jet waves and shear-layer instability
waves near the nozzle of subsonic and nearly ideally expanded supersonic, isothermal free …

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 …

The present work focuses on the study of the resonance and coupling of an underexpanded
circular twin-jet system operating at a nozzle pressure ratio of. Particle image velocimetry …