55 citations · 346 across the 24 of their papers we have counts for
5 papers · 1 filter
Manipulating flow separation: sensitivity of stagnation points, separatrix angles and recirculation area to steady actuation
Edouard Boujo, François Gallaire
A variational technique is used to derive analytical expressions for the sensitivity of several geometric indicators of flow separation to steady actuation. Considering the boundar…
Open-loop control of noise amplification in a separated boundary layer flow
Edouard Boujo, Uwe Ehrenstein, François Gallaire
Linear optimal gains are computed for the subcritical two-dimensional separated boundary-layer flow past a bump. Very large optimal gain values are found, making it possible for sm…
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…
Second-order sensitivity of parallel shear flows and optimal spanwise-periodic flow modifications
E. Boujo, A. Fani, F. Gallaire
The question of optimal spanwise-periodic modification for the stabilisation of spanwise-invariant flows is addressed. A 2nd-order sensitivity analysis is conducted for the linear…