Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Sketch of the azimuthal and radial velocity profiles depicting the mechanism by which a recirculating flow arises, attributed to the decrease in the azimuthal velocity and, hence, centrifugal force and the increase in the inward radial velocity at the fluid layer near the bottom of the chamber. The flow in the thin Bödewadt layer just below the free surface is omitted for simplicity.
