H
Håkan Wedin
Researcher at University of Genoa
Publications - 12
Citations - 1016
Håkan Wedin is an academic researcher from University of Genoa. The author has contributed to research in topics: Reynolds number & Pipe flow. The author has an hindex of 8, co-authored 12 publications receiving 959 citations. Previous affiliations of Håkan Wedin include University of Bristol.
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Unstable flow structures in the Blasius boundary layer.
TL;DR: Finite amplitude coherent structures with a reflection symmetry in the spanwise direction of a parallel boundary layer flow are reported together with a preliminary analysis of their stability, finding that they are unstable to small amplitude perturbations and thus may be part of a set of unstable nonlinear states of possible use to describe the turbulent transition.
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Coherent flow states in a square duct
TL;DR: In this article, the flow in a square duct is considered and finite amplitude approximate traveling wave solutions, obtained using the self-sustaining-process approach introduced by Waleffe, are obtained at low to moderate Reynolds numbers and used as initial conditions in direct numerical simulations.
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Effect of plate permeability on nonlinear stability of the asymptotic suction boundary layer.
TL;DR: The nonlinear dynamics of the flow in the vicinity of the computed finite-amplitude solutions is investigated by direct numerical simulations, providing a viable scenario for subcritical transition due to TS waves.
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Saddle-node bifurcations of traveling waves in the asymptotic suction boundary layer flow
Håkan Wedin,Stefania Cherubini +1 more
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Permeability models affecting nonlinear stability in the asymptotic suction boundary layer: the Forchheimer versus the Darcy model
TL;DR: In this paper, the authors compare the two models, assessing where in the parameter space they cease to produce the same results in the field of transition to turbulence, where focus is put on two-dimensional nonlinear traveling waves (TWs) and their three-dimensional linear stability.