Hypersonic boundary layer transition is a hot yet challenging problem restricting the
development and breakthrough of hypersonic aerodynamics. In recent years, despite great …

We present STREAmS, an in-house high-fidelity solver for direct numerical simulations
(DNS) of canonical compressible wall-bounded flows, namely turbulent plane channel, zero …

The linear global instability and resulting transition to turbulence induced by an isolated
cylindrical roughness element of height) roughness element sustaining only the sinuous …

The linear instability and breakdown to turbulence induced by an isolated roughness
element in a boundary layer at Mach roughness heights from the roughness trailing edge …

A numerical investigation is carried out to study the transition of a subsonic boundary layer
on a flat plate with roughness elements distributed over the entire surface. Post-transition …

The present thesis constitutes a step forward in advancing the frontiers of knowledge of fluid
flow instability from a physical point of view, as a consequence of having been successful in …

Exascale High Performance Computing (HPC) represents a tremendous opportunity to push
the boundaries of Computational Fluid Dynamics (CFD), but despite the consolidated trend …

We study the transition of a Mach 6 laminar boundary layer due to an isolated cylindrical
roughness element using large-scale direct numerical simulations (DNS). Three flow …

Large eddy simulations were conducted to investigate the effects of distributed roughness
on separated flow transitions over a highly loaded compressor blade at a Reynolds number …

Roughness-induced transition control is a key technology for aircraft design, and associated
research is useful in practical applications as well as for understanding the mechanism of …