6 papers · 1 filter
Universal Free-Fall Law for Liquid Jets under Fully Developed Injection Conditions
M. Beneitez, D. Moreno-Boza, A. Sevilla
We show that vertical slender jets of liquid injected in air with a fully-developed outlet velocity profile have a universal shape in the common case in which the viscous force is…
Instability of the optimal edge trajectory in the Blasius boundary layer
Miguel Beneitez, Yohann Duguet, Philipp Schlatter +1
In the context of linear stability analysis, considering unsteady base flows is notoriously difficult. A generalisation of modal linear stability analysis, allowing for arbitrarily…
A model for the collapse of the edge when two transitions routes compete
Miguel Beneitez, Yohann Duguet, Dan S. Henningson
The transition to turbulence in many shear flows proceeds along two competing routes, one linked with finite-amplitude disturbances and the other one originating from a linear inst…
The edge as a Lagrangian Coherent Structure in a high-dimensional state space
Miguel Beneitez, Yohann Duguet, Philipp Schlatter +1
Dissipative dynamical systems characterised by two basins of attraction are found in many physical systems, notably in hydrodynamics where laminar and turbulent regimes can coexist…
Optimal perturbations and transition energy thresholds in boundary layer shear flows
Chris Vavaliaris, Miguel Beneitez, Dan S. Henningson
Subcritical transition to turbulence in spatially developing boundary layer flows can be triggered efficiently by finite amplitude perturbations. In this work, we employ adjoint-ba…
Edge tracking in spatially developing boundary layer flows
Miguel Beneitez, Yohann Duguet, Philipp Schlatter +1
Recent progress in understanding subcritical transition to turbulence is based on the concept of the edge, the manifold separating the basins of attraction of the laminar and the t…