(b)
Figure 5- The translational velocity of a
spherical particle subject to a Couette flow at (a)
\(\text{Re}_{w}=10\) and (b) \(\text{Re}_{w}=50\). The
particle starts to move at T=0.01 and shows a rolling motion. At
\(\text{Re}_{w}=10\) the rolling velocity is different from the
translating velocity showing a slip velocity for the particle and wall.
At \(\text{Re}_{w}=50\) there is no difference between the rolling and
translating velocities (Not shown).
\label{figure-5--the-translational-velocity-of-a-spherical-particle-subject-to-a-couette-flow-at-a-textre_w-10-and-b-textre_w-50.-the-particle-starts-to-move-at-t0.01-and-shows-a-rolling-motion.-at-textre_w-10-the-rolling-velocity-is-different-from-the-translating-velocity-showing-a-slip-velocity-for-the-particle-and-wall.-at-textre_w-50-there-is-no-difference-between-the-rolling-and-translating-velocities-not-shown.}