Migration and Alignment of Three Interacting Particles in Poiseuille Flow of Giesekus Fluids

Effect of rheological property on the migration and alignment three interacting particles in Poiseuille flow Giesekus fluids is studied with direct-forcing fictitious domain method for Weissenberg number (Wi) ranging from 0.1 to 1.5, mobility parameter 0.7, ratio particle diameter channel height 0.2 0.4, solvent viscosity total being 0.3 initial distance (y0) centerline 0 0.2. The results showed that effect y0 significant. variation off-centerline (y0 ≠ 0) spacing completely different on-centerline = spacing. As vertical increased, various types are more diversified. For particle, change mainly concentrated process cross-flow migration. Additionally, polymer extension proportional both confinement ratio. bigger Wi is, increment is. memory shear-thinning responsible reduction d1. Furthermore, migrate abnormally due interparticle interaction.