We consider the frequency domain form of proper orthogonal decomposition (POD), called
spectral proper orthogonal decomposition (SPOD). Spectral POD is derived from a space …

Informed by large-eddy simulation (LES) data and resolvent analysis of the mean flow, we
examine the structure of turbulence in jets in the subsonic, transonic and supersonic …

Coherent features of a turbulent Mach 0.9, Reynolds number jet are educed from a high-
fidelity large eddy simulation. Besides the well-known Kelvin–Helmholtz instabilities of the …

Response modes computed via linear resolvent analysis of a turbulent mean-flow field have
been shown to qualitatively capture characteristics of the observed turbulent coherent …

Three amplification mechanisms present in turbulent jets, namely lift-up, Kelvin–Helmholtz
and Orr, are characterized via global resolvent analysis and spectral proper orthogonal …

Coherent turbulent wave-packet structures in a jet at Reynolds number 460 000 and Mach
number 0.4 are extracted from experimental measurements and are modeled as linear …

This work proposes a feedback-loop strategy to suppress intrinsic oscillations of resonating
flows in the fully nonlinear regime. The frequency response of the flow is obtained from the …

Motivated by the recent success in finding coherent structures in turbulent flows and
describing their noise emission using the Resolvent Analysis (RA), the method is applied to …

We study the development of perturbations in a submerged air jet with a round cross-section
and a long laminar region (five jet diameters) at a Reynolds number of 5400 by both inviscid …

We study a turbulent jet issuing from a cylindrical nozzle to characterise coherent structures
evolving in the turbulent boundary layer. The analysis is performed using data from a large …