vortex ring

noun

a stable perturbation in a fluid that takes the form of a torus in which the flow rotates in the section of the torus so that the pressure difference between the inside and outside of the torus balances body forces. The best-known vortex ring is a smoke ring

Words nearby vortex ring

voroshilovsk, vorspiel, vorster, vortex, vortex drag, vortex ring, vortex shedding, vortex street, vortex vein, vortical, vorticella

Example sentences from the Web for vortex ring

Now this is just what a vortex-ring would do in an incompressible frictionless fluid.

The Unseen World and Other Essays |John Fiske
A vortex-ring produced in the air behaves in the most surprising manner.

The Machinery of the Universe |Amos Emerson Dolbear
One may, without mechanical difficulties, imagine a vortex-ring destroyed.

The Machinery of the Universe |Amos Emerson Dolbear
Through a vortex-ring or tube, the fluid circulates in closed lines of flow, each one of which is laced through the tube.

Lord Kelvin |Andrew Gray

This vortex-ring theory shows easily how possible it is to-day to think what once was philosophically incredible.

The Machinery of the Universe |Amos Emerson Dolbear

BROWSE DICTIONARY

Learning

vortex ring

noun

Words nearby vortex ring

Example sentences from the Web for vortex ring