Stokesian Dynamics ) is a microhydrodynamic, low Reynolds number approach to modelling the movement of suspensions of particles in fluids, which considers the interaction of particles with each other against a Newtonian background solvent. It is typically chosen for its suitability for three-dimensional simulation with low calculation and time penalty.In the most basic case, Stokes' law states that a single sphere of radius π, travelling with a velocity π in an unbounded Newtonian fluid of viscosity π, in a low Reynolds number regime, experiences a drag force, πΉ, of πΉ = β6ππππ.