2019/05/07 by Jean-Régis Angilella, Angilella, Jean-Régis
Biochemistry, Genetics and Molecular Biology · Engineering · Environmental Science · #Chaotic Dynamics (nlin.CD) #Diffusion and Search Dynamics #Ecosystem dynamics and resilience #FOS: Physical sciences #Fluid Dynamics (physics.flu-dyn) #Microfluidic and Bio-sensing Technologies #Particle Dynamics in Fluid Flows
paper · pdf · doi:10.48550/arxiv.1905.02400
openalex publication_date 2019/05/07 · openalex created_date 2022/07/29 · openalex updated_date 2026/07/28
The motion of weakly inertial Brownian particles, transported by steady\ntwo-dimensional fluid flows, is investigated by means of asymptotic methods. We\nfocus on the phenomenon of noise-induced separatrix crossing, which can force\nparticles to enter or exit recirculation cells in an unpredictable manner. An\nanalytical expression for the probability of separatrix crossing is obtained.\nIt can be applied to a wide variety of flows, provided some elementary\nkinematical quantities of the fluid flow are known. It does not require to\nsolve particle trajectories.\n