posted on 2018-05-15, 14:30authored byKoray Sekeroglu, C. W. Extrand, David A. Burdge
The onset of drainage of liquids
from plastic tubes was evaluated.
One end of the tubes was plugged, filled with liquid, oriented horizontally,
and attached to a rotor. With their open end facing outward, the filled
tubes were spun at progressively higher speeds until they began to
drain. Resistance to drainage was independent of the tube length,
but depended on the surface tension and density of the liquids as
well as the diameter and wettability of the tubing. We found that
the onset of drainage could be explained in terms of a critical centrifugal
acceleration.