27 citations · 48 across the 3 of their papers we have counts for
5 papers · 1 filter
Bistable flow dynamics of airfoil stall under varying angle of attack: A stochastic model with multiplicative noise
Edouard Boujo, Ivan Kharsansky Atallah, Luc R. Pastur
We focus on the intermittent bistable stall dynamics of an airfoil under varying angle of attack. We propose a one-dimensional Langevin equation where the stochastic forcing depend…
On the symmetry-breaking instability of the flow past axisymmetric bluff bodies
A. Chiarini, R. Gauthier, E. Boujo
The primary bifurcation of the flow past three-dimensional axisymmetric bodies is investigated. We show that the azimuthal vorticity generated at the body surface is at the root of…
Noise-induced transitions past the onset of a steady symmetry-breaking bifurcation: the case of the sudden expansion
Yves-Marie Ducimetière, Edouard Boujo, François Gallaire
We consider fluid flows, governed by the Navier-Stokes equations, subject to a steady symmetry-breaking bifurcation and forced by a weak noise acting on a slow time scale. By gener…
Sensitivity and open-loop control of stochastic response in a noise amplifier flow: the backward-facing step
Edouard Boujo, François Gallaire
The two-dimensional backward-facing step flow is a canonical example of noise amplifier flow: global linear stability analysis predicts that it is stable, but perturbations can und…
Controlled reattachment in separated flows: a variational approach to recirculation length reduction
E. Boujo, F. Gallaire
A variational technique is used to derive analytical expressions for the sensitivity of recirculation length to steady forcing in separated flows. Linear sensitivity analysis is ap…