Abstract
The orientation dynamics of a 2D assemblage of interacting acicular particles in an opposed-poles arrangement has been modelled, and is aimed at establishing general principles which will be investigated further by a 3D molecular dynamics model. The equations of motion of the system are represented by a set of three first-order ODEs, where a net torque expression and the infinitely-damped form of the Landau-Lifschitz equation are used to model the particle and moment dynamics, respectively. The resinous vehicle is treated (to a first approximation) as a homogeneous, isotropic Newtonian fluid. This initial study shows the importance of pre-orientation due to mechanical shear during coating.
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