In fluid dynamics, predicting and characterizing bifurcations, from the onset of unsteadiness
to the transition to turbulence, is of critical importance for both academic and industrial …

In this paper we extend the harmonic resolvent analysis to study the dynamics of
subharmonic perturbations about a periodically time-varying base flow. In doing so, we …

We aim at computing time-and span-periodic flow fields in span-invariant configurations.
The streamwise and cross-stream derivatives are discretised with finite volumes while time …

Oftentimes, turbulent flows exhibit a high-frequency turbulent component developing on a
strong low-frequency periodic motion. In such cases, the low-frequency motion may strongly …

With the ever increasing computational power available and the development of high-
performances computing, investigating the properties of realistic very large-scale nonlinear …

A systematic approach to parametrically analyze compressible time-periodic flows is
proposed. Instead of time-stepping simulations, a Fourier–Galerkin strategy is adopted …

Reduced-order models for flows that exhibit time-periodic behavior (eg, flows in
turbomachinery and wake flows) are critical for several tasks, including active control and …

Two-dimensional numerical simulations of the flow around a NACA0012 profile at Reynolds
number Re= 5000 show that unsteady periodic flows reach different saturated states when …

The spontaneous pairing of rolled-up vortices in a laminar jet is investigated as a global
secondary instability of a time-periodic spatially developing vortex street. The growth of …

The unsteady axisymmetric flow through a circular aperture in a thin plate subjected to
harmonic forcing (for instance under the effect of an incident acoustic wave) is a classical …