Soft entities can be deformed by Poiseuille flows in thin microfluidic channels. Exploiting this phenomenon, we show that red blood cells exhibit a deformation-induced actuation when being subjected to asymmetric periodic flow fields, whereas rigid beads vanishing net drift.

We study reaction fronts described by the Kuramoto-Sivashinsky equation subject to a Poiseuille flow. The fronts propagate with or against the flow located inside a two-dimensional slab. Steady front profiles can be flat, axisymmetric, or nonaxisymmetric, depending on the gap between the plates and the average flow speed. We first obtain the steady front solutions, later executing a linear stab...

We will study the nonlinear stability of plane Couette and Poiseuille flows with Lyapunov second method by using classical L2-energy. prove that streamwise perturbations are L2-energy stable for any Reynolds number. This contradicts results Joseph (1966), Carmi (1969) Busse (1972), allows us to prove, a conjecture, critical numbers obtained along two-dimensional perturbations, spanwise as Orr (...