3. Movement of drops and bubbles
A fluid globule is distinguished from a rigid spherical globule by its viscosity η g , which is not infinite, and by the continuous globule/phase interfacial tension σ.
For a spherical globule of diameter d, which is subjected neither to deformation nor oscillation, and in laminar flow (Re
g
< 1), the globule's velocity is equal to the free-fall velocity given by Stokes' formula
(6)
, multiplied by a corrective factor, Hadamard's coefficient H :
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Unit operations. Chemical reaction engineering
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Movement of drops and bubbles
Flow through a particle bed
Bibliography
Fluid viscosity
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