Abstract

The terminal settling velocity of spherical particles was experimentally investigated in cylindrical columns in the range of Reynolds numbers 2≤Re t ∞≤185 and of particle-to-column diameter ratios, λ, about 0.1 to 0.9. It was observed that none of the existing equations relating the terminal settling velocity, u t , to the diameter ratio, λ, is fully satisfactory. For this reason two new empirical calculation methods are proposed which enable the determination of u t in the whole range of both Reynolds number, Re t ∞, and diameter ratio, λ.

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