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 …

To investigate the effects of the nozzle-exit conditions on jet flow and sound fields, large-
eddy simulations of an isothermal Mach 0.9 jet issued from a convergent-straight nozzle are …

Experience gained from previous jet noise studies with the unstructured large-eddy
simulation flow solver “Charles” is summarized and put to practice for the predictions of …

In 1992, Sir James Lighthill foresaw the dawn of a second golden age in aeroacoustics
enabled by computer simulations (Hardin JC, Hussaini MY (eds) 1993 Computational …

We propose a novel cluster-based reduced-order modelling (CROM) strategy for unsteady
flows. CROM combines the cluster analysis pioneered in Gunzburger's group (Burkardt …

We present experimental results for the acoustic field of jets with Mach numbers between
0.35 and 0.6. An azimuthal ring array of six microphones, whose polar angle,, was …

We generalize the POD-based Galerkin method for post-transient flow data by incorporating
Navier–Stokes equation constraints. In this method, the derived Galerkin expansion …

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 …

A reduced-order modelling (ROM) strategy is crucial to achieve model-based control in a
wide class of flow configurations. In turbulence, ROMs are mostly derived by Galerkin …

Linear instability waves, or wavepackets, are key building blocks for the jet-noise problem. It
has been shown in previous work that linear models correctly predict the evolution of …