2013/04/17 by Lingling Shi, Shi, Lingling, Yao Yu +6
Engineering · Medicine · Physics and Astronomy · #65M60 #65M85 #76D05 #Blood properties and coagulation #FOS: Physical sciences #Fluid Dynamics (physics.flu-dyn) #Fluid Dynamics and Turbulent Flows #Lattice Boltzmann Simulation Studies #msc:65M60 #msc:65M85 #msc:76D05 #physics.flu-dyn
paper · pdf · doi:10.48550/arxiv.1304.4971
15 pages, 17 figures
arxiv created 2013/04/17 · openalex publication_date 2013/04/17 · arxiv updated 2013/04/19 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
Two motions of oscillation and vacillating breathing (swing) of a red blood cell have been observed in bounded Poiseuille flows (Phys. Rev. E 85, 16307 (2012)). To understand such motions, we have studied the oscillating motion of a neutrally buoyant rigid particle of the same shape in Poiseuille flow in a narrow channel and obtained that the crucial point is to have the particle interacting with Poiseuille flow with its mass center moving up and down in the channel central region. Since the mass center of the cell migrates toward the channel central region, its oscillating motion of the inclination angle is similar to the aforementioned motion as long as the cell keeps the shape of long body. But as the up-and-down oscillation of the cell mass center damps out, the oscillating motion of the inclination angle also damps out and the cell inclination angle approaches to a fixed angle.