5 papers
Sudden expansion stability thresholds modified by lateral flows
T. Salamon, R. Debuysschère, A. Chafaï +2
We study the flow in a symmetric three-dimensional confined sudden expansion with lateral inflow at Reynolds number below 300 and varying lateral-to-central flow rate ratio, using…
A minimal model of pump foil dynamics
Eunok Yim, Francois Gallaire
Pump foiling enables a hydrofoil surfboard to sustain forward motion on flat water using only periodic leg pumping, converting vertical oscillations into hydrodynamic lift and thru…
Drops can Perpetually Bounce over a Vibrating Wettable Solid
Lebo Molefe, Tomas Fullana, François Gallaire +1
On the surface of a vibrating liquid bath, instead of coalescing, a drop will continually bounce on a thin film of air between the drop and the free surface, giving rise to rich ch…
Nonmodal amplitude equations
Yves-Marie Ducimetière, François Gallaire
We consider fluid flows for which the linearized Navier-Stokes operator is strongly non-normal. The responses of such flows to external perturbations are spanned by a generically v…
Effective flows across diffusio-phoretic membranes
Kevin Wittkowski, Pier Giuseppe Ledda, Edoardo Carlo Giordano +2
Flows enabled by phoretic mechanisms are of significant interest in several biological and biomedical processes, such as bacterial motion and targeted drug delivery. Here, we devel…