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Natural Gas Processing by Alireza Bahadori

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4.14. Typical equations, which can be used for terminal velocity calculation

4.14.1. Terminal velocity of a spherical fine particle settling under the influence of gravity

The terminal velocity of a spherical fine particle settling under the influence of gravity can be determined by Stokes' law:

Vt=4gDp3CDρLρvρv

image (4.46)

Vt=kρ1ρvρv

image (4.47)

where:
Vt is terminal velocity, in (m/s)
g is acceleration of gravity, in (m/s2)
Dp is diameter of fine particle, in (m)
CD is drag coefficient
ρl is density of liquid, in (kg/m3)
ρv is density of vapor, in (kg/m3)
k is entrainment ...

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