Worlds of David Darling
Encyclopedia of Science
   
Home > Encyclopedia of Science

vortex




Old Sow whirlpool
A whirling mass of fluid such as seen in a tornado, a whirlpool, a smoke ring, or water running out of a bath. The term is used in hydrodynamics for a portion of fluid in which the individual particles have circular motions. A vortex may be produced when two adjacent fluid streams have different velocities or when a solid body moves through a fluid and vortex lines cannot begin or end inside the fluid.


Related category

   • ATMOSPHERIC PHENOMENA AND STRUCTURES