Violations of Jeffery's theory in the dynamics of nanographene in shear flow
Simon Gravelle, Catherine Kamal, Lorenzo Botto
Abstract
By using molecular dynamics simulations we demonstrate that at high P\'eclet numbers a nanographene suspended in a shear flow aligns at a constant orientation angle, in contrast with the rotary motion predicted by Jeffery's theory. This instantaneous alignment with the flow of the nanographene is due to hydrodynamic slip at the fluid-particle interface, and produces a marked reduction in suspension viscosity compared to the no-slip case.
Topics & Concepts
Shear (geology)Slip (aerodynamics)MechanicsMaterials scienceShear flowFlow (mathematics)Shear viscosityViscosityClassical mechanicsPhysicsThermodynamicsComposite materialNanopore and Nanochannel Transport StudiesMicro and Nano RoboticsCarbon Nanotubes in Composites