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

When dealing with high-pressure releases, be it needed by some operating conditions or
due to an emergency protocol or even to the occurrence of an accident, one has to consider …

The screech noise generation process from supersonic underexpanded jets, issuing from a
sonic nozzle at pressure ratios of 2.4 and 3.3 (fully expanded Mach number, Mj= 1.19 and …

In many fluid experiments, we can only obtain low-spatial high-temporal resolution flow
images and high-spatial low-temporal resolution flow images due to the limitation of high …

The structure of a screeching axisymmetric jet in the helical C mode at a nozzle pressure
ratio of 3.4 issuing from a convergent nozzle is studied using high-resolution particle image …

The density field of underexpanded supersonic free jets issuing from a choked circular
nozzle was measured using a Rayleigh scattering-based technique. This reliable and …

Near-field acoustic measurements and time-resolved schlieren visualisations are performed
on 10 round jets with the aim of analysing the different parts of the feedback loop related to …

During rocket launching, the engine exhaust impinges on the launch structures, such as the
launch platform and the jet deflector, leading to a complex flowfield and generating strong …

The mechanism underpinning the generation of screech tones has remained an open
question for many years. In this paper, direct experimental observations of the shock …

The flow structures and the acoustic feedback loops of underexpanded round jets are
investigated by numerical simulations. The jets have a Mach number of 1 at the nozzle exit …