The effect of high levels of free-stream turbulence on the transition in a Blasius boundary
layer is studied by means of direct numerical simulations, where a synthetic turbulent inflow …

The linear response to stochastic and optimal harmonic forcing of small coherent
perturbations to the turbulent channel mean flow is computed for Reynolds numbers ranging …

Reducing skin friction is important in nature and in many technological applications. This
reduction may be achieved by reducing stresses in turbulent boundary layers, for instance …

We compute the optimal transient growth of perturbations sustained by a turbulent channel
flow following the same approach recently used by del Álamo and Jiménez [J. Fluid Mech …

It has been recently shown that the energy-containing motions (ie coherent structures) in
turbulent channel flow exist in the form of Townsend's attached eddies by a numerical …

The optimal energy growth of perturbations sustained by a zero pressure gradient turbulent
boundary is computed using the eddy viscosity associated with the turbulent mean flow. It is …

It has recently been found by using temporal and spatial numerical simulations that steady
optimal streaks of moderate amplitude, ie, sufficiently large but not exceeding the critical …

The flow through a compressor passage without and with incoming free-stream grid
turbulence is simulated. At moderate Reynolds number, laminar-to-turbulence transition can …

An experimental and theoretical investigation aimed at describing the nonmodal growth of
steady and spanwise periodic streamwise streaks in a flat plate boundary layer is presented …

Separation on the rear-end of an Ahmed body is suppressed by means of large-scale
coherent streaks forced on the roof of the model. These streaks originate from an array of …