1. Theoretical background and experimental results
1.1 Motion of solid particles in a fluid
Various flow regimes of the fluid around the solid govern the movement of the particles, opposing them with a resistance that varies with the relative velocity of the solid in relation to the fluid. These are defined (figure
1
)
a laminar or Stokes regime (figure 1 a ) when relative motion is slow; the liquid threads, motionless in contact with the particle, are driven by a velocity that increases with distance from the particle,...
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Theoretical background and experimental results
Gravitational classifiers
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